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Hyperbranched polyurethane water dispersion has good performance in coating applications.
Waterborne coatings uses water as the medium, thereby resources is rich, price is cheap, easy to get and non-combustible. Polyurethane waterborne coatings have good water dispersibility, stability, film-forming, adhesion, gloss and solvent resistance performance etc. Adding hyperbranched polymer has the following advantages: (1) low viscosity, some end groups used for curing, shorten the curing time and increase the crosslinking density of the cured film and the film properties; (2) the particle diameter of the water dispersion is about 100nm, and the hyperbranched polyurethane shows good dispersibility and stability in water; (3) The resin has excellent physical and film-forming property , impact resistance achieve maximum 50cm, also choose the right formula varnish according to different drying ways. Professional Manufacturer for low cost dendritic polymers.-Weihai CY Dendrimer Technology Co. Ltd. forwards from "synthesis of hyperbranched polyurethane water dispersion and performance thereof" Wang Li, Tang Jinwei, Tong Shenyi, Wuhan Engineering University, Hubei new reactor and Green Chemical Technology key Laboratory, Wuhan 430074) modern Paint & Finishing, 2007,4 (10),14-16

Effective application of dendrimer in carbon dioxide catalytic reactions.
(1) through "divergent synthetic method," using KH550 to modify amino groups of silica and react with acrylate, diamines series, then obtain silica with PAMAM on the surface; (2) the synthetic silica with branch phosphine composes catalyst system with RuCl3, to verify the catalytic activity in the catalytic hydrogenation reaction of carbon dioxide, the catalytic activity of 1-4G increased with the increase of generation, the activity of 4G reaches maximum(TOF: 4195) ,5-6G activity decreases. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers forwards from "Preparation and application of silica/magnetic supported branch phosphine in catalytic reaction of carbon dioxid" Su Yajun, Hebei University of Technology 2009 in May

Effective application of Hyperbranched polymer in plastic (PA and HDPE) processing.
(1) hyperbranched polymer had no significant effect on the HDPE melt temperature and the crystal , crystallization temperature and the crystallinity increased slightly; (2) hyperbranched polymer can improve the HDPE melt flow, HDPE / HBP blends remains pseudoplastic fluid, it can reduce the melt complex viscosity, injection molding experiments show that hyperbranched polymers can significantly reduce the HDPE injection molding processing temperature, thus improving its processing performance and reduce energy consumption; (3) hyperbranched polymer can improve HDPE extrusion melt fracture, improve extrusion surface smoothness; (4) hyperbranched polymer in HDPE can be 150-250nm scale dispersion, though are not up to the molecular level dispersion, but making HDPE tensile strength increased, when dosage is 0.18% , it can be improved by 26.16%. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers forwards from "Research on hyperbranched polymers application in the plastic (PA and HDPE) Processing " Zhang Xiong, Donghua University, 2007 Master Thesis

Dendritic polymers can greatly improve PP/ PVC performance.
(1) the dosage of PP-HBP is 5 units, PP / PVC / PP-H BP blending system tensile strength and impact strength reaches the maximum, respectively increase 18.03% and 28.2%; (2) PP-HBP improve PP/PVC compatibility of blends; (3) when PP-HBP dosage less than 5 units, PP/PVC/ PPHBP apparent viscosity of the blends is larger than PP / PVC blends; when PP-HBP dosage more than 5 units, PP/PVC/PP-HBP the apparent viscosity of blends is smaller than PP/PVC blends; (4) blends meet the free volume theory of polymer melt flow. With temperature increasing, the apparent viscosity of the blend decreases. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers forwards from "PP / PVC / PP-HBP blends research" Diao JIANZHI BA Xin Wu Ding Haitao Li Chunzai Hebei University, Modern Plastics Processing and Applications 20 2005 No. 17 No. 3; "PP-HBP-modified PP / PVC rheological behavior," Diao Jian-zhi 1, SONG Xiao 2, Zhang Jianmin 1, Peng Cheng-11: Shijiazhuang Railway Institute, 2: Hebei electric Power Research Institute of Modern plastics Processing and Applications 2006 18 volume No. 2

2.With hyperbranched polyester coating can cure at 70 ℃ low temperature.
Double bond modified hyperbranched polyester can overcome the defect that general powder coating cure at 120 , it can achieve about 70 ℃ low temperature curing, thereby expanding the application of powder coatings, it is not limited to metal substrate, the heat-sensitive substrate (such as wood, plastic, etc.) applications, it has fast curing rate at low-temperature, high conversion rate, curing enthalpy is 70KJ/mol, compared to the curing enthalpy of methacrylic acid 57KJ/mol, it has obvious application advantages.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers forwards from "Novel Concept for Low Temperature Curing Powder Coatings Based on Hyperbranched Polyesters" Mats Johansson, Eva MalmstrOm, Andreas Jansson, and Anders Hultt - Royal Institute of Technology Technical Articles, Vol. 72, No. 906, July 2000

Hyperbranched polyester as toughening agent of epoxy resin systems has good performance.
Non-reactive hydroxyl-terminated hyperbranched polyesters can be used as toughening agent of epoxy resin system (bisphenol A epoxy resin) , which in the form of monodisperse particles disperse in epoxy matrix, play a toughening effect. When the dosage is 10%, it can obviously improve the impact resistance properties and is 2 times than without it. Hyperbranched polyesters in the form of particles disperse in the epoxy systems can reduce crack and play an enhanced effect. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers forwards from "Thermomechanical properties and morphology of blends of a hydeoxy-functionalized polymer and epoxy resin" D.Ratna GPSimon Department of materials engineering manash university, clayton , vic, 3800, Australia Polmer, 2001.42, 8833-8839

PAMAM labeled antibodies for in vitro testing
PAMAM dendritic polymers can bind with antibody, combining with the conventional ELISA methods, it can be used for the in vitro detection of TAFI levels, opening up a new method of in vitro TAFI diagnostics to improve the detection sensitivity. TAFI levels in vitro test kit contains a monoclonal antibody specific for the TAFI and enzyme-linked immunoassay reagents required, and according to the biological characteristics of PAMAM with amino end groups, using PAMAM labeled antibody method for detecting human biological samples content of TAFI in vitro test, which solves the existing disadvantages of expensive device technology and long defect detection time. For clinical predictors of cardiovascular disease, making it simple, fast, low cost, diagnostic sensitivity, low detection limit. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers, forwards from "TAFI levels in vitro detection kit" Applicant: Liaoning Wandi Biotechnology Co., Ltd. Inventors: LI Wenxin

Effective application of PAMAM in papermaking wastewater treatment.
Using polyamidoamine (PAMAM) on the papermaking wastewater by flocculation treatment, the results show that, PAMAM dendrimers for papermaking wastewater has excellent flocculation effect.When pH is around 3.0, PAMAM dosage is 50mgL , the SS and COD Cr removal rate can reach 91% and 89.4%. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers, forwards from "A study on the application of polyamidoamine dendrimer in the treatment of paper mill effluent " Shen Yi, Zhang Guanghua, Zhu Xuedan (key Laboratory of additives Chemistry&technology for chemical light industry, Ministry of Education, Shaanxi University of Science&Technology, Xi'an 710021,China)

PAMAM Dendrimer Nanocomposites catalyst has a good application prospect.
PAMAM dendrimers can be prepared as a template with good dispersion, high stability, uniform size and controllable quantum dots, solubility of quantum dots in organic or inorganic solvent can be adjusted through the terminal functional group modification to make it used as quasi-homogeneous catalysts. It can fully contact with the reactants to increase the catalytic efficiency and is heterogeneous catalyst which is easy to separate. Furthermore, active surface groups of PAMAM make the quantum dots attached to the carrier, which can enhance the re-use and recycling performance of the catalyst. Thus, the quantum dot/PAMAM Nanocomposites catalyst has good application prospects. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers, forwards from "Effect of Polymer Templates on the Preparation and Photocatalytic Activity of CdS Quantum Dots" Cong Rimin*,1,2 Luo Yunjun*,2Yu Huaiqing1 (1 College of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081) (2 College of Material Science and Engineering, Shandong University of Technology, Zibo 255049) Chimica Sinica Vol. 68, 2010, No.19, 1971 ~ 1976

Hyperbranched polyester is widely used in the field of coatings.
Hyperbranched polyesters can be widely used in coatings, either as direct additives, curing agent or as a coating material, have shown superior property compared with conventional additives . Hyperbranched polyester with double bonds nidified in the UV-curable coatings has outstanding performance. Such as for flexible material, showing excellent resistance to oxygen permeability, the PET and PP were increased resistance to oxygen permeability of 2.3 times and 15 times, in addition, it conglutinates well with the PET and PP packaging substrate. It has promising applications prospects.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers, forwards from Barrier coating for flexible packaging based on hyperbranched resins Lange, E Stenroos, M Johansson Department of polymer technology, Royal Institute of Technology,S-100 44 Stockholm Sweden Polymer,2001,42,7403-7410

Hyperbranched polyester applications in coating industry.
(1) Epoxy resin curing agent.
Hyperbranched polyester has a large number of active end groups, amino groups and carboxyl groups can react with epoxy groups.
Applicable products:
Hyperbranched polymer with amino groups,carboxyl groups,such as PAMAM and modified hyperbranched polyester.
Examples 1:

Carboxyl-terminated dendrimer as curing agent by reaction of a carboxyl group with an epoxy group of the epoxy fixed on the three-dimensional network structure, along with appropriate increase of the mass fraction resulting cured crosslink density increases, by the action of stretched force, the three-dimensional network structure of the epoxy resin can maintain its rigidity, can withstand greater tensile force, making the tensile strength increases. As shown, the tensile properties test due to GB/T-2568-1995, temperature (23±2) ℃, rate of extension 2mm/min, when add modified hyperbranched polyester CYD-220T mass fraction of 15 %, the tensile strength reaches the maximum 64.86 MPa, is 3 times than the system without adding it.

Example 2:

Using dendrimers with amino terminal group as the epoxy resin curing agent, adding the theoretical amount and without diluent, at 20 ℃, usage time and gel time of such coatings are 6.0 and 2.4 times than ethylenediamine/epoxy System. And curing at 95 ℃, 120 ℃, 150 ℃, curing speed are 1.8 times, 3.4 times and 4.8 times than ethylenediamine/epoxy resin system.

(2)Epoxy resin additives

Principle:
Non-reactive end groups of the hyperbranched polymer does not react with the epoxy resin, curing agent, or the reaction activity is low. In epoxy curing system, the cured is modified by physical blending.
Applicable products:
Hyperbranched polyester series.
Application examples:
Hydroxyl-terminated hyperbranched polyester can improve the tensile strength and impact strength of epoxy resin, adding the hydroxyl-terminated hyperbranched polyester of 10% mass fraction, the tensile strength and impact strength were increased by 17.7% and 26.3%, and after adding hyperbranched polyester, impact strength at low temperature is not lower than room temperature.

(3) Hyperbranched epoxy resin.
Epoxy-modified hyperbranched polyester can significantly improve the toughness of the epoxy resin coating, the impact resistance, along with the amount increase of the hyperbranched polyester, the impact resistance increases, while the dosage is 15%, the impact resistance is 296% of the original one and the rate of curing, mechanical strength of the original epoxy resin matrix are not affected, which is attributed to plasticizing properties of hyperbranched polyester and particulate structure in epoxy resin phase. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Effective application of hyperbranched polymers in the dyeing and finishing industry.
Hyperbranched polymer characteristics: (1) the precise molecular structure; (2) a high degree of geometric symmetry; (3) a large number of functional groups; (4) cavity in the molecule; (5) relative molecular mass controllable; (6) nanometer size molecule. These characteristics determine the physical and chemical properties of hyperbranched polymers: (1) excellent rheology; (2) the unique viscosity property; (3) good solubility; (4) low surface tension; (5) glass temperature drops; (6) easy film forming; (7) not crystallization; ( unique density and density distribution; (9) the unique refractive index increment. Hyperbranched polymers has been widely used in the dyeing and finishing industries due to its characteristics and physical properties. (A) cationic modification of cellulose fibers; (2) inkjet printing ink; (3) dyeing carrier in polypropylene fiber body (4) coating agent; (5) efficient anti-staining agents and leveling agents; (6) dispersion of "microcapsule" dye; (7) carpet scale inhibitor; ( dyeing wastewater treatment agent; (9) fabric water repellent finish; (10) antimicrobial finishing of cotton.
From " Development of branched polymer and its application in dyeing and finishing industry" Huang Maofu, dyeing Donghua University (2012 No. 6) 47 ~ 53 Weihai CY Dendrimer Technology Co. Ltd. -Professional Manufacturer for low cost dendritic polymers.

Hyperbranched polyester can significantly improve the many performance of PET processing.
(1) hyperbranched polymer has greater impact on rheological performance of PET, when HBPE-OH addition level is 0.5%, the torsion decreases by 60%, in 10% of the added amount can decrease by 77%; (2) HBPE/PET mixing system has good thermal stability to meet the general using conditions and under the high temperature processing, PET will not degrade though with hydroxyl terminal groups; (3) Through SEM, it proves that HBPE-OH can bring brittle-ductile transition to PET material. From "Research on PET blending modification by hyperbranched polyester " Ji Lianqin, Beijing Institute of Technology 2010 Master Thesis. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Films made from PAMAM are a novel and efficient cell anode catalyst for methanol fuel.
PAMAM-based film has good uniformity and the catalytic activity increases as the film generation enhanced. The catalytic ability of the film has been greatly improved compared to pure platinum catalysts, anti-drug capabilities have a greater enhancement, it’s a novel and efficient cell anode catalyst for methanol fuel. From "A direct catalyst for methanol fuel cell anode composite film and its preparation methods" Lin Shen, Luo Minghong, Zhang Xiaofeng, Fujian Normal University, Fuzhou, Fujian Normal University Technology Office Qishan campus, Application No. 200910112350.6. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Polyamidoamine (PAMAM) dendrimer application in Coatings
Characteristics of dendritic PAMAM:
(1) Good hydrodynamics performance
(2) Unique viscosity behavior, has promising application prospects in coatings.
(3) Easy to forming-film, has promising application prospects in coatings.
(4) Having a large number of active surface group, so functionalized and modified end group is more convenient.
(5) A highly branched molecular structure determines its less prone to crystallization
(6) Having a good thermal stability

Application Example 1
Using half-generation dendrimer as a seed, styrene as the representative monomer to mix emulsion. The resulting average particle size of the polymer emulsion of ions between the 30-50nm, less than 100nm, and even distribution;
Example 2
Dendrimers with amino terminal group graft the silicon obtained epoxy curing agent, and uniformly dispersed in the epoxy resin, showed that the elastic modulus of cured material is lower than commonly used curing agent, and the heat resistance is improved.
Example 3
Using Dendrimers with amino terminal group as the epoxy resin curing agent, adding the theoretical amount and without diluent, at 20 ℃, usage time and gel time of such coatings are 6.0 and 2.4 times than ethylenediamine/epoxy System. And curing at 95 ℃, 120 ℃, 150 ℃, curing speed are 1.8 times, 3.4 times and 4.8 times than ethylenediamine/epoxy resin system.
Example 4
Dendrimers with amino terminal used as curing agent for the epoxy resin, at different temperatures and concentrations , the results shows that the gel time can be reduced under high temperature and reaction rate and kinetic constants are increased. The activation energy is significantly higher than the activation energy after the gel point.
Example 5
PAMAM Dendrimers have low melt viscosity, good compatibility and plentiful end group which can be modified, and it can be applied for coating system. Liang Hongbo etc. has reported on the polyamidoamine dendrimer modified end groups that by the introduction of crystallizable segments, can obtain semi-solid, semi-crystalline polymers which may be used as UV-curable powder coatings. This coating is solvent free, no VOC emissions, and has good raw material utilization, easy to operate. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Effective application of hyperbranched polyester resin in the coatings.
(1) hyperbranched polyester application in high-solids content coating.
Compact molecular structure, three-dimensional spherical structure, not easy to tangle between moleculars, compared with same molecular weight linear polymers, its solution has low viscosity at a higher solids content. (2) hyperbranched polyester application in the UV curable coating. Introducing hyperbranched polymer into the UV curing system, can overcome some of the disadvantages of linear oligomers, such as severe shrinkage of film, diluent volatilizing, toxicity, etc.
Thermosetting hyperbranched polyester with hydroxyl end groups, can control the crosslink density through the introduction of non-active/reactive end group. Light-curing coatings with acrylated polyesters, without adding photoinitiator, at a low intensity of UV irradiation, can cure film, and the film hardness, resistance to acetone, scratch resistance is good. (3) hyperbranched polyester application in powder coating.Powder coatings has disadvantages such as high curing temperature, large energy consumption, as well as not applied to heat-sensitive substrates.By introducing the hyperbranched polymer can overcome this disadvantage. Powder coatings generally cure time is 10 ~ 30 min, temperature is 170 ~ 200 ℃, which limit the powder coating application in the film substrate and heat sensitive substrates.The UV-curable powder coatings make up for this shortcoming, it can be used for heat-resistance substrate, low temperature curing, good fluidity, fast curing, etc. Weihai CY Dendrimer Technology Co. Ltd. -Professional Manufacturer for low cost dendritic polymers.

Hyperbranched polymers can greatly improve shear strength and adhesion of epoxy and polyurethane adhesives.
Highly branched polymer PAMAMs (HPBs) becomes a new kind thermosetting adhesive and related adhesion promoter, interfacial adhesion and durability have been significantly increased (100-250%) after modifying, while at lower concentrations it can effect best, it has wide applications and can be used as a binder for variety of plastic and metal. Weihai CY Dendrimer Technology Co. Ltd forwards from ”Novel adhesion promoters based on hyper-branched polymers “ H. DODIUK-KENIG 1 , A. BUCHMAN 3,∗and S. KENIG 1Shenkar College of Enginnering and Design, Department of Plastics Engineering, Ramat-Gan, Israel Israel Plastics and Rubber Center, Mitchel Building, Shenkar College, Israel 3 Rafael, Department 27, P. O. Box 2250, Haifa 31021, Israel Composite Interfaces, Vol. 00, No. 0, pp. 1 - 17 (2004)

Hyperbranched polyester modified epoxy resin has excellent performances.
Hyperbranched polymer has low viscosity, high functionality, no chain entanglement and good solubility characteristics, provides a new way for epoxy toughening. Modifying the hydroxyl-terminated hyperbranched polyester (AHBP) obtained hyperbranched polyester with carboxyl end group (CHBP), not only has the toughening effect, but also play the role of a curing agent. Using CHBP as flexibilizer and curing agent, study its toughing effect on epoxy/MTHPA (EP/MeTHPA) curing system; CHBP molecular terminal all with carboxyl has the best toughening effect, impact strength achieves 18.5 kJ/m2; when the carboxyl terminal content reaches 40%, the impact strength of the epoxy resin is only 7.8 kJ/m, CHBP has no toughening effect at this time. When CHBP mass fraction is 15%, tensile strength achieves the maximum , 64.86 Mpa; when CHBP mass fraction is 15%, the Tg of the resulting cured epoxy resin is 106 ℃, increased about 6 ℃. Weihai CY Dendrimer Technology Co. Ltd forwards from "Study on carboxyl - terminated hyperbranched polyester modif ied epoxy resin curing systems" Wang Xiaoke, Tian Mi (Chongqing University of Science and Technology, Chongqing 401331) Thermosetting Resin, 2008,3 (23) , 25-28

Owing to their unique optical, electrical, magneticand mechanical properties, carbon nanotubes (CNTs) have attracted worldwide attention in the fields of nanoscience, nanotechnology, and bioengineering. However, now multi-walled carbon nanotubes in polymer composites is limited by its polymerization tendency and poor dispersion. Using polyamido - amine dendrimer modified multi-walled carbon nanotubes (MWCNTs), prepared a dendrimer / carbon nanotubes (MWCNTs-g-PAMAM) nano composites. In polar solvent such as water, methanol and ethanol, the composite material has good dispersibility. Infrared spectra showed that the graft-modification is covalent bonding of MWCNTs and PAMAM, thermal gravimetric analysis data indicate that PAMAM successfully modified on MWCNTs sidewalls, and grafted onto MWCNTs. The amount of PAMAM varies with their generation (G1.0 ~ G4.0) , the specific order is G2.0> G1.0 ≈ G3.0> G4.0. Weihai CY Dendrimer Technology Co. Ltd. forwards from "Modification of Multi-walled Carbon Nanotubes with Poly(amidoamine) Dendrimers via "Grafting to" Method" Yuan Kun, Zhu Yuancheng Liu Yanzhi, Liu Xinwen, Tang Huian, Zuo Guofang, Zhang Junyan, Tianshui College of Life Science and Chemistry, Tianshui 741001 Lanzhou Institute of Chemical Physics, national Laboratory of solid Lubrication, Lanzhou inorganic Chemistry Vol 25 No. 6 June 2009

Using organic amines such as secondary amines and tertiary amines polymerize propylene oxide ring-opening to get linear polyquaternium, using PAMAM as a crosslinking agent then obtained
stellate polyquaternium reverse demulsifier. Its advantages are mild reaction conditions, readily available raw materials, unique structure of products, is cationic organic macromolecule, and has a
charge neutralization, replacement, adsorption, bridging performance, add 5 ~ 30ppm can effectively remove oil,suspended solids and other pollutants from the oily sewage , effectively reduce the oil content ,color, COD and other indicators in treatment sewage.The stellate polyquaternium efficient reverse demulsifier respectively, in Huabei Oilfield, Liaohe Oilfield, Daqing Oilfield carried out using the evaluation and achieved good effect. Weihai CY Dendrimer Technology Co.,Ltd fowards from "One method for preparing efficient stellate polyquaternium reverse demulsifier" Patent No.: 200810115284.3 Applicant: China National Offshore Oil Corporation co-applicants: Tianjin Chemical Research and Design Institute invention person: Sufen Wang, Guangyuan Yao,Bei Lin, Jiajun Li, Houkai Teng,Shuzhong Zheng.