摘要:
Amine-epoxy curing agents are disclosed including at least one saturated heterocyclic compound having two nitrogen heteroatoms according to formula (I) and at least one saturated fused bicyclic heterocyclic compound having three nitrogen heteroatoms according to formula (II) :
wherein X is independently selected from a hydrogen atom, a linear or branched C 1 to C 4 alkyl group and a substituted or un-substituted phenyl group, Y 1 is a direct bond or a divalent polyethylene polyamine group having 1 to 8 nitrogen atoms or a divalent polyethylene polyamine derivative having 1 to 8 nitrogen atoms, Y 2 is a direct bond or a divalent polyethylene polyamine group having 1 to 7 nitrogen atoms and R is independently a hydrogen atom or a group selected from C 1 - C 8 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups. An amine-epoxy compositions are disclosed including the amine-epoxy curing agent and at least one multifunctional epoxy resin. Methods for forming an epoxy are disclosed including reacting the amine-epoxy curing agent and the at least one multifunctional epoxy resin.
摘要:
An aqueous dispersion and a method for making an aqueous dispersion. The dispersion including at least one conductive polymer such as a polythienothiophene, at least one polyurethane polymer and optionally at least one colloid-forming polymeric acid and one non-fluorinated polymeric acid. Devices utilizing layers formed of the inventive dispersions are also disclosed.
摘要:
Aqueous polyurethane dispersions comprising polyurethane polymer and methods for making and using same are disclosed herein. In one aspect of the present invention, aqueous polyurethane dispersions, comprising a polyurethane polymer having a weight average molecular weight ranging from 20,000 to 80,000, are prepared by controlling the weight average molecular weight of the polymer by reacting the isocyanate terminated prepolymer with at least one chain terminating agent; and/or maintaining a N/COOH molar ratio of amine in the neutralizing agent to acid functional group in the isocyanate reactive compound to from about 0.5:1 to about 1:1.
摘要:
Aqueous polyurethane dispersions comprising polyurethane polymer and methods for making and using same are disclosed herein. In one aspect of the present invention, aqueous polyurethane dispersions, comprising a polyurethane polymer having a weight average molecular weight ranging from 20,000 to 80,000, are prepared by controlling the weight average molecular weight of the polymer by reacting the isocyanate terminated prepolymer with at least one chain terminating agent; and/or maintaining a N/COOH molar ratio of amine in the neutralizing agent to acid functional group in the isocyanate reactive compound to from about 0.5:1 to about 1:1.
摘要:
Substantially solvent-free aqueous polyurethane dispersions and methods of making and using the same are provided. The substantially solvent-free aqueous polyurethane dispersions are provided in a substantially solvent-free system of a prepolymer made by reacting at least one polyol, at least one polyisocyanate, at least one isocyanate-reactive compound comprising one or more ionic or potential ionic groups, and at least one isocyanate chain terminating agent.
摘要:
Aqueous polyurethane dispersions comprising polyurethane polymer and methods for making and using same are disclosed herein. In one aspect of the present invention, aqueous polyurethane dispersions, comprising a polyurethane polymer having a weight average molecular weight ranging from 20,000 to 80,000, are prepared by controlling the weight average molecular weight of the polymer by reacting the isocyanate terminated prepolymer with at least one chain terminating agent; and/or maintaining a N/COOH molar ratio of amine in the neutralizing agent to acid functional group in the isocyanate reactive compound to from about 0.5:1 to about 1:1.