₦airaland Forum

Dendrimer-based storage devices have good performances.
Existing non-volatile memory based on standard silicon processing have problems to achieve large-capacity, because their complex structure lead to the large size of storage unit. And also the processing costs, and the chip can not be miniaturized due to technical limitations. Dendrimer-based storage devices have the following advantages: (1) non-volatile property (2)high integration density allows the implementation of large capacity (3) manufactured at low cost by a simple manner(4) driven at low voltage and low current, which reduces power consumption.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers（CYD-PD246/CYD-PD347/CYD-PD529）

UV curable film performance of branched polyurethane acrylate
Dendrimers (CYD-CR111/CYD-CR236/CYD-CR486/CYD-CV11 etc.)have low viscosity and good adhesion, used in light curable acrylic polyurethane coatings formulations, their performance is complementary , thereby making coating performance more excellent. System with dendrimer has high functionality, cured film network has large crosslinking density and the film has high hardness, compared to unmodified polyurethane system, it has better coordination of the hardness and flexibility, therefore have better wear resistance, hardness increased 0.8 times, wear resistance increases 1.7 times. In addition, the dendrimer modified acrylic polyurethane UV coating, can be blended with a variety of active monomer to improve overall performance, while not affect its own flexibility and adhesion. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Starlike dendritic polymers modified acrylate resin coatings have good performances.
Water-based acrylate resin coatings use water as medium, it’s an environment friendly coatings as VOC is little. The disadvantage is the high surface tension of water, it results in poor leveling property, slow drying, sagging, craterring,low gloss etc. Because of bad water resistance,
it hasn’t been used in automatic coatings. Dendrimers (CYD-CR111/CYD-CR236/CYD-CR486/CYD-CV11etc.) can offer more active crosslinking point to lower viscosity of coatings and increase leveling property and crosslinking density, thus getting curing film with better over-all properties.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Excellent properties of organic light emitting device with dendrimer.
Advantages of OLED1)light weight (2) easy operation with simple elements (3) good imagine quality, high color purity and dynamic image(4) low power consumption. The most important fault of OLED is the short life span, but life span increased by 100% if use dendrimer (CYD-MD1384/CYD-MK4514/CYD-MD2524/CYD-MK5654 etc.) in the production, driven voltage is 1V less than the compared samples and lighting efficiency increased by 46%. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

CT contrast agents based on dendrimer/gold nanoparticles have superior properties.
Now commercially available CT contrast agents are iodine based, faults as following (1) short circulation time in vivo (2) potential toxicity to kidney. Dendrimer （CYD-MD1384/CYD-MK4514/CYD-MD2524/CYD-MK5654 etc.）based CT contrast agents has following advantages (1) gold shows higher X-ray attenuation coefficient, is more conductive to provide high quality CT effect.(2) Gold nanoparticles can be give targeting property and prolong circulation time due to its easy modified surface（3）gold nanoparticles prepared by dendrimer have good dispersion and biocompatibility property, and are also environment friendly.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

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

Effective application of Hyperbranched polyester in the processing of nylon 6 and the PET.
Adding <0.5wt% of the hyperbranched polymer can reduce spinning temperature of nylon 6 by
20 ℃, lower spinning temperature can greatly reduce the high temperature thermal degradation of nylon 6, to improve product performance. Specification (1) adding hyperbranched polymer can reduce the melt viscosity of nylon 6, to improve the melt processability; (2) hyperbranched polyester can be uniformly dispersed in the matrix of the PET , the size is between tens to hundreds of nanometers; (3) mechanical properties of PET plastic spline does not affect by adding hyperbranched polymer. Weihai CY Dendrimer Technology Co. Ltd forwards from "Effective application of Hyperbranched polyester in the processing of nylon 6 and the PET" , Zhan Shan ,Dong Hua University, master's degree thesis in 2007

Hyperbranched polyester can significantly improve the toughness of epoxy coating.
Hyperbranched polyester can significantly improve the toughness of epoxy coating, i.e impact resistance, with an increase in the amount of hyperbranched polyester, the impact resistance increases, while the addition level of 15%, the impact resistance increases by 296% and have no impact on the epoxy resin matrix curing condition, rate, and mechanical strength, which is attributed to plasticizing properties of hyperbranched polyester and particles structure in the epoxy resin phase.Weihai CY Dendrimer Technology Co. Ltd forwards from "Hyperbranched Polymers in Cationic Photopolymerization of Epoxy Systems" M. SANGERMANO ', G. MALUCELLI1, R. BONGIOVANNI', A. PFUOLA1 *, A. HARDEN2, and N. REHNBERG2 lDipartimento di Scienza dei Materiali e Ingegneria Chimica Politecnico di ToMo, C.so Duca degli Abruzzi 24 I-1 01 29 Torino, Italy 2Perstorp Specialty Chemicals, 284 80 Perstorp, Sweden POLYMER ENGINEERING AND SCIENCE, AUGUST 2003, Vol. 43, No. 8,1461 -1465

Hyperbranched polyester modified nanoparticles can greatly enhance impregnating varnish performance
Using Al2O3 nano-particles modiffied by aliphatic hyperbranched polydihydroxytoluene propi-onate(HMPA) as filler, using insulating impregnating varnish as matrix to prepare thermal conductivity impregnating varnish to study its performance. Get the following conclusions: (a) hyperfunctional Al2O3 nanoparticles can effectively improve the dispersion performance and interface compatibility of the particles in the varnish, when the particles filling amount is 20%, hyperfunctional Al2O3 nanoparticles can still evenly dispersed in the varnish, almost invisible agglomeration, while the particles without modification have serious agglomeration. (2) varnish filled with hyperfunctional Al2O3 nanoparticles, its impact strength, thermal conductivity is significantly improved. When the filling amount is 20%, varnish filled with hyperfunctional Al2O3 nanoparticles reaches maximum impact properties which are 4.96 times than non filled. When the filler content is 25% and filled with hyperfunctional Al2O3 nanoparticles, impregnating varnish thermal conductivity reaches the maximum which is 1.82 times than non filled. (3)composite volume resistivity is increased if filling with hyperfunctional Al2O3 nanoparticles , but increased slightly, keep within an order of magnitude, the varnish is still able to maintain good electrical insulation. Weihai CY Dendrimer Technology Co. Ltd forwards from "Study of Impregnating Varnish Modified with Hyperbranched Al2O3 Nanoparticles" Fu JiFang a, b, Xiao Yinglin a, Chen Yi a, b, Shi Liyi a, b, Chen Liya a, Zhong Qingdong a, b (a. Nano-Science and Technology Research Center of Shanghai University ; b. School of Materials Science and Engineering, Shanghai University, Shanghai 200072) Insulation Materials, 2011, 44 (2), 4-8

Dendrimers application in magnetic nanoparticles field has good prospects.
The magnetic nanoparticle is a multifunctional microsphere which having fluorescent, magnetic and drug transporting characters.PAMAM carrying drug can reach the specified position by applying a magnetic field to achieve targeted drug delivery, and tracking by its fluorescence; the PAMAM surface can be grafted to a wide variety of functional groups and can be applied to the different fields, now it has been widely used, such as magnetic resonance imaging, drug delivery, magnetic switch, biotechnology, biomedical and magnetic hyperthermia. Weihai CY Dendrimer Technology Co. Ltd forwards from “Fabrication and Functionalization of Dendritic Poly(amidoamine)- Immobilized Magnetic Polymer Composite Microsphere”, Hongbo Liu,Jia Guo,Lan Jin, Wuli Yang, and Changchun Wang Fudan UniVersity.

The effective application of the complex of copper - polyamide amine (Cu (II)-PAMAM) as a catalyst.
Advantages of Cu(II)-PAMAM complexes as catalyst in aqueous medium in the DMP polymerization: (1) can be carried out under relatively mild conditions; (2) good coupling selectivity of C-O/C-C , high yield rate of polymer polyphenylene ether (PPO),minimal byproduct DPQ; (3)compared with traditional Cu (II)-EDTA complex catalyst, the catalytic activity of Cu (II)-PAMAM complex is greatly improved. Weihai CY Dendrimer Technology Co. Ltd forwards from “Oxidative polymerization of DMP in aqueous mnedia with Cu (II)-PAMAM complex catalyst”, Zhejiang University.

Dendrtic PAMAM has a promising application in the field of electroplating wastewater treatment.
Dendrimers PAMAM-OH / titania composites can be used as the metal chelate compound to process the waste water containing metal ions, especially in industrial plating wastewater treatment, it has a promising application. For different metal, optimum pH of ions of electroplating wastewater treatment is different, Cu2+ and Cr3+ optimum treatment at pH7, the metal ion removal rate are 96.6%, 99.9%, and Ni2+ optimum processing at pH9, remove rate is 99.8%.Weihai CY Dendrimer Technology Co. Ltd forwards from “Remediation of Cu(II), Ni(II), and Cr(III) ions from simulated wastewater by dendrimer/titania composites”.

Dendrimers have good and promising applications in oil wastewater treatment
Dendrimers have good and promising applications in oil wastewater treatment. Dendrimers (PAMAM, CYD) modified with magnetic nanoparticles can be used for almost all kinds of oil wastewater, and show excellent performence of watertreatment, which is far better than traditional pharmaceutical. Oil removal rate can reach 97.4%, after 70mg/L PAMAM-F3O4 is added, and the suspension can be reduced from 137mg/L to 55mg/L.

Dendrimer based crude oil demulsifiers have good performance.
Using dendrimer with tree multi-branched structure as a synthesis initiator for demulsifier, obtained demulsifier with many branches, and large molecular weight, excellent interface and penetration ability, has good demulsification break performance for oil emulsion, it can be widely used in oil exploration, petroleum refining and other fields. Dendrimer-based crude oil demulsifiers for crude oil like water-in- oil type emulsion has good demulsification performance. The demulsifier has been used in Shengli Oilfield, Bohai Suizhong 36-1 oilfield, Karamay heavy oil and so on. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers. -The newest 4th class polymers.

Application of dendritic polymers in WPC.
Sisal fibers are rigid fiber, can enhance the mechanical properties of wood-plastic composites, but because of a large number of hydroxyl groups presented on the surface, it is not conducive to the formation of a good interface compatibility with polypropylene resin. Therefore, it needs to add a certain amount of compatibilizer to improve the interface compatibility between the Sisal fibers and the polymer radicals. So, dendritic polymer dispersants that can improve the sisal fiber (SF) and polypropylene (PP) interface compatibility get the industry's attention. Dendritic polymer dispersant due to structural characteristics, have good fluidity, thus making wood-plastic composite material has good processing properties, and the synthesis process of dispersants is simple and easy to realize industrial production. When dispersant dosage is 1-5% of sisal fibers total amount, impact strength of sisal polypropylene WPC increased from 14.78kJ/m2 to 23.62kJ/m2, increased by 59.8%. And the material surface is smooth and no bubbles. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers. -The newest 4th class polymers.

Dendrimer-based storage devices have good performances.
Existing non-volatile memory based on standard silicon processing have problems to achieve large-capacity, because their complex structure lead to the large size of storage unit. And also the processing costs, and the chip can not be miniaturized due to technical limitations. Dendrimer-based storage devices have the following advantages: (1) non-volatile property (2)high integration density allows the implementation of large capacity (3) manufactured at low cost by a simple manner(4) driven at low voltage and low current, which reduces power consumption.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers（CYD-PD246/CYD-PD347/CYD-PD529）

Excellent properties of organic light emitting device with dendrimer.
Advantages of OLED1)light weight (2) easy operation with simple elements (3) good imagine quality, high color purity and dynamic image(4) low power consumption. The most important fault of OLED is the short life span, but life span increased by 100% if use dendrimer (CYD-MD1384/CYD-MK4514/CYD-MD2524/CYD-MK5654 etc.) in the production, driven voltage is 1V less than the compared samples and lighting efficiency increased by 46%. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Starlike dendritic polymers modified acrylate resin coatings have good performances.
Water-based acrylate resin coatings use water as medium, it’s an environment friendly coatings as VOC is little. The disadvantage is the high surface tension of water, it results in poor leveling property, slow drying, sagging, craterring,low gloss etc. Because of bad water resistance,
it hasn’t been used in automatic coatings. Dendrimers (CYD-CR111/CYD-CR236/CYD-CR486/CYD-CV11etc.) can offer more active crosslinking point to lower viscosity of coatings and increase leveling property and crosslinking density, thus getting curing film with better over-all properties.Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Excellent properties of organic light emitting device with dendrimer.
Advantages of OLED1)light weight (2) easy operation with simple elements (3) good imagine quality, high color purity and dynamic image(4) low power consumption. The most important fault of OLED is the short life span, but life span increased by 100% if use dendrimer (CYD-MD1384/CYD-MK4514/CYD-MD2524/CYD-MK5654 etc.) in the production, driven voltage is 1V less than the compared samples and lighting efficiency increased by 46%. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Effective application of dendrimer-based mesoporous catalyst in hydrogenation reaction of unsaturated hydrocarbons.
Nanoparticles are easily oxidized and agglomerating in the application and storage, thus affecting its catalytic activity and selectivity. A lot of catalysts have excellent catalytic performance are often homogeneous catalysts, which brings enormous waste and pollution for catalyst recovery and utilization. To meet the lubricants requiremens of high-quality,energy saving, extending oil change period and low emissions, base oil is required to have a low viscosity, low volatility, high viscosity index, excellent oxidation stability characteristics.Dendrimer-based mesoporous catalyst compared with the prior technology has significant features and progress: a) nanoparticles protected by inorganic-organic shell have stable performance; 2) convenient recycling and non pollution ; 3) can be recycled; 4) controllable reaction rate and selectivity. The result has proved that the dendrimer Pd-Gn-mesoporous catalyst has higher catalytic activity of the hydrogenation, the reaction activity can be controlled by different type of catalyst, and the selectivity of saturated hydrocarbons increased with the generation increases, raised from 79% of 1 generation to 93.4% and 91.4% of 3,4-generation, thus inhibiting the byproduct production of ketone, which has important practical significance on catalytic hydrogenation.In contrast to homogeneous catalyts, catalytic activity has been improved, selectivity is 20% higher than heterogeneous catalysts (75%).Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Dendritic polymers have obvious application advantages and prospect.

In the production of controlled released fertilizer, changing processing methods can obtain controlled release fertilizer of different application way as dendritic polymers have special cavity structures and functional surface groups, the fertilizer has long release time and active ingredient is uniformly released, it’s biodegradable and environment friendly, there’s nitrogen in the degradable product that can be absorbed by the plants. Such as:
Application 1:
It can replace traditonal sealants and used as toughening agents for the ourter resin of the sulfur coated controlled release fertilizer, compared to the traditional sealants, dosage is less but performance is good, it can not only increase the strength but also decrease the coating void, thus realizing effect release, besides, it’s degradable and won’t pollute the earth.
Application 2:
As coating material, it’t won’t need porogen or less dosage is ok, itself is nanopore structure and have long release time, the release effect is uniform, the coaitng has good impact and tensile strength, can be coated uniformly.
Application 3:
Used as carriers for fertilizer. Dendrimers have void space to coat the fertilizer, i.e use dendrimers as additives to mix with fertilizer, coat the fertilizer in the cavity of dendrimers, and then it can be effectively released, which meant to prepare dendritic controlled release fertilizer. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.

Application of dendrimers in slow release pesticide

Compared with ordinary pesticide, slow release pesticide with dendrimers have following advantages: 1) solubility to decrease dosage 2) reduce pesticide loss in the environment to enchance the utilizatioin ratio 3) increase adhesion and retention of pesticide on plants, prolong retention time 4) Increase penetration to the plants and insects to improve pesticide effect 5）Control pesticide release speed to have functional and energy saving pesticide 6）Long term effect by one time usage 7） Resistance to rain, weather and improve environmental stability

Example as following:
Dendritic polymers were used as pesticide carriers to mix with dichlorophenoxyacetic acid (2,4-D). The result showed dendritic polymers can well coat herbicide 2,4-D. Further crop experiments showed that the pesticide with dendritic polymers as carriers had good slow release performance. Compared with the traditional pesticide,the dendritic pesticide performance was increased by 2-4 times, and had excellent resistance to rain, weather and other environmental. The slow release pesticide can be controlled at slowed-release period and release time can be increased up to 1-3 months. Weihai CY Dendrimer Technology Co. Ltd.-Professional Manufacturer for low cost dendritic polymers.