News Details
Alcohol amine chain extender
2017-2-20 17:28:22
Alcohol amine chain extender, currently use more alcohol amine chain extender mainly with ethanolamine, diethanolamine, triethanolamine, three isopropanolamine and N, N '- double (2 - hydroxypropyl) aniline, etc. They not only can be used as a normal polyether synthesis starting agent, at the same time, also can make the polyurethane chain extender and used in high elastic resilient soft, semi-hard dip and hard bubble formula, they have lower material viscosity, improve material emulsifying ability, is advantageous to the material with complex cavity.
When using aniline and toluene diamine aromatic amine as the starting agent, ethylene oxide or propylene oxide polymerization, control the degree of polymerization, the preparation of the aromatic amine ether oligomer molecular weight 200-200, they can be used as chain extender and is widely used in rigid half, RIM hard, elastomer and other products of the production.
Alcohol amine chain extender DytekA (chemical name: 2 - methyl amyl diamine used in field of spandex, can be greatly improved in terms of the elasticity of the product.
1) used in the production of polyamide plastics, films and fibers
2) used in the production of polyamide adhesive and resin printing
3) as a epoxy curing agents, such as coating, floor and paving materials, composite materials and the capsule
4) polyurethane chain extender; For different acrylic acid ester; The expansion of the chain. polyols
5) synthetic organic chemicals, such as pesticide, medicine, etc.
Alcohol amine chain extender Invista DytekA the fifth methyl carbon atoms on the carbon chain branched chain amine compound, and its derivatives has unique properties, such as low viscosity, high flexibility and good compatibility performance. Try dibasic acid, Dytek generated A high molecular weight multivariate amine polymers and copolymers, this kind of compounds, with ethylene diamine compounds compared to the preparation of polymers and copolymers, it has low melting point, low crystallinity properties; The resin type many of the products is transparent.
Chain extender through adjustment and control characteristics of the polyester plastic viscosity to restore and improve mechanical properties, thermal properties, processing properties and optical balance. Mainly used for PET, PBT, PC, PA, TPU and biodegradable materials PLA, PBS, PHA, PHB, PCLS polymer condensation polymer processing and recycling.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Extender chain reaction is often associated with chain extender. Chain extender agent is to point to in a short period of time used to increase the polymer relative molecular mass of some low molecular weight compounds.
Chain extender agent should be able to speed up reaction, can be in extrusion machine. Chain extender is a bifunctional compound, usually very easy to react with two kinds of polymer chain end groups. Chain extension agent, rarely general mass fraction at around 1%. Usage chain extension reaction, often referred to as, in a short period of time with the two connected to the group (usually at the end) of the polymer and increase the reaction of the polymer relative molecular mass.
Conventional reaction, especially the polycondensation reaction, remove small molecules (water) in the late reaction difficult, sometimes can not meet the need of molecular weight polymer. Although using solid phase polymerization can obtain high relative molecular mass, but the operating trouble, time-consuming, not economic. Therefore, as one of the important methods to improve the relative molecular mass, the need to apply quick, effective and can complete extrusion on the extrusion machine several minutes extender chain reaction. At present, the chain extension reaction increasingly extensive application in polymer synthesis.
Commonly used in production, some compounds containing active hydrogen end group with isocyanate prepolymer reaction, the molecular diffusion chain extension, so as to realize the resin curing forming. 2 - imidazole alkane ketone is a widely used with the amino active hydrogen chain extender.
In polyester process due to thermal degradation and hydrolysis results in the decrease of molecular weight, end carboxyl amount increase, thus lower mechanical and chemical properties of polymers. Under the condition of reactive blending add double functional group small molecule compounds.
For example: bifunctional acid derivatives, isocyanate, acid anhydride and epoxide, these double functional compounds contain easily with carboxyl, hydroxyl and reactions such as amino functional groups, can directly react with low molecular mass oligomer, form a "bridge" between the two polymer chains, a significant increase in molecular weight, improve the viscosity of the system, reduce the end carboxyl content. The end of the linear polyester mainly includes the hydroxyl and carboxyl, therefore on the polyester chain extender for selecting compounds with hydroxyl or carboxyl bonus.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
When using aniline and toluene diamine aromatic amine as the starting agent, ethylene oxide or propylene oxide polymerization, control the degree of polymerization, the preparation of the aromatic amine ether oligomer molecular weight 200-200, they can be used as chain extender and is widely used in rigid half, RIM hard, elastomer and other products of the production.
Alcohol amine chain extender DytekA (chemical name: 2 - methyl amyl diamine used in field of spandex, can be greatly improved in terms of the elasticity of the product.
1) used in the production of polyamide plastics, films and fibers
2) used in the production of polyamide adhesive and resin printing
3) as a epoxy curing agents, such as coating, floor and paving materials, composite materials and the capsule
4) polyurethane chain extender; For different acrylic acid ester; The expansion of the chain. polyols
5) synthetic organic chemicals, such as pesticide, medicine, etc.
Alcohol amine chain extender Invista DytekA the fifth methyl carbon atoms on the carbon chain branched chain amine compound, and its derivatives has unique properties, such as low viscosity, high flexibility and good compatibility performance. Try dibasic acid, Dytek generated A high molecular weight multivariate amine polymers and copolymers, this kind of compounds, with ethylene diamine compounds compared to the preparation of polymers and copolymers, it has low melting point, low crystallinity properties; The resin type many of the products is transparent.
Chain extender through adjustment and control characteristics of the polyester plastic viscosity to restore and improve mechanical properties, thermal properties, processing properties and optical balance. Mainly used for PET, PBT, PC, PA, TPU and biodegradable materials PLA, PBS, PHA, PHB, PCLS polymer condensation polymer processing and recycling.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
Extender chain reaction is often associated with chain extender. Chain extender agent is to point to in a short period of time used to increase the polymer relative molecular mass of some low molecular weight compounds.
Chain extender agent should be able to speed up reaction, can be in extrusion machine. Chain extender is a bifunctional compound, usually very easy to react with two kinds of polymer chain end groups. Chain extension agent, rarely general mass fraction at around 1%. Usage chain extension reaction, often referred to as, in a short period of time with the two connected to the group (usually at the end) of the polymer and increase the reaction of the polymer relative molecular mass.
Conventional reaction, especially the polycondensation reaction, remove small molecules (water) in the late reaction difficult, sometimes can not meet the need of molecular weight polymer. Although using solid phase polymerization can obtain high relative molecular mass, but the operating trouble, time-consuming, not economic. Therefore, as one of the important methods to improve the relative molecular mass, the need to apply quick, effective and can complete extrusion on the extrusion machine several minutes extender chain reaction. At present, the chain extension reaction increasingly extensive application in polymer synthesis.
Commonly used in production, some compounds containing active hydrogen end group with isocyanate prepolymer reaction, the molecular diffusion chain extension, so as to realize the resin curing forming. 2 - imidazole alkane ketone is a widely used with the amino active hydrogen chain extender.
In polyester process due to thermal degradation and hydrolysis results in the decrease of molecular weight, end carboxyl amount increase, thus lower mechanical and chemical properties of polymers. Under the condition of reactive blending add double functional group small molecule compounds.
For example: bifunctional acid derivatives, isocyanate, acid anhydride and epoxide, these double functional compounds contain easily with carboxyl, hydroxyl and reactions such as amino functional groups, can directly react with low molecular mass oligomer, form a "bridge" between the two polymer chains, a significant increase in molecular weight, improve the viscosity of the system, reduce the end carboxyl content. The end of the linear polyester mainly includes the hydroxyl and carboxyl, therefore on the polyester chain extender for selecting compounds with hydroxyl or carboxyl bonus.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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