A polysulfone-urethane copolymer is disclosed, which can be used as a membrane polymer, e.g., a matrix polymer, a pore forming agent, or both, while enhancing a membrane's blood compatibility. Methods are disclosed for forming the copolymer and incorporating the copolymer in membranes (e.g., spun hollow fibers, flat membranes) and other products.

A solvent-based polyurethane retort adhesive composition for producing laminates including: (A) at least one isocyanate compound, Component A; and (B) at least one isocyanate (NCO)-reactive component, Component B, comprising (i) at least one phosphate ester compound and (ii) at least one polyester polyol having an average molecular weight of greater than 3,000 g/mol; a process for producing the above adhesive; a multi-layer laminate product including the above adhesive; and a process for producing a laminate product using the above adhesive.

A solvent-based polyurethane retort adhesive composition for producing laminates including: (A) at least one isocyanate compound, Component A; and (B) at least one isocyanate (NCO)-reactive component, Component B, comprising (i) at least one phosphate ester compound and (ii) at least one polyester polyol having an average molecular weight of greater than 3,000 g/mol; a process for producing the above adhesive; a multi-layer laminate product including the above adhesive; and a process for producing a laminate product using the above adhesive.

A solvent-based polyurethane retort adhesive composition for producing laminates including: (A) at least one isocyanate compound, Component A; and (B) at least one isocyanate (NCO)-reactive component, Component B, comprising (i) at least one phosphate ester compound and (ii) at least one polyester polyol having an average molecular weight of greater than 3,000 g/mol; a process for producing the above adhesive; a multi-layer laminate product including the above adhesive; and a process for producing a laminate product using the above adhesive.

A composition including at least one compound having a perfluoropolyether group and a curable site, wherein in a molecular weight distribution curve in gel permeation chromatography measurement, the following formula is satisfied: M2/M1≤3.5, wherein M1 is a molecular weight at a main peak, and M2 is a molecular weight at 25% intensity of an intensity of the main peak on a higher molecular weight side than M1. Also disclosed is a curable composition containing the composition and a method for producing the curable composition.

A composition including at least one compound having a perfluoropolyether group and a curable site, wherein in a molecular weight distribution curve in gel permeation chromatography measurement, the following formula is satisfied: M2/M1≤3.5, wherein M1 is a molecular weight at a main peak, and M2 is a molecular weight at 25% intensity of an intensity of the main peak on a higher molecular weight side than M1. Also disclosed is a curable composition containing the composition and a method for producing the curable composition.

Provided are a waterborne polyurethane emulsion for ultra-thin polyurethane condoms having a low modulus and a high strength, and a method for preparing the emulsion, wherein the waterborne polyurethane emulsion comprises 15 to 18 parts by mass of a macromolecular diol, 4 to 6 parts by mass of a diisocyanate, 0.6 to 0.9 parts by mass of a hydrophilic chain extender, 0.4 to 0.8 parts by mass of a small-molecule chain extender, and the like. The prepared waterborne polyurethane emulsion is characterized by a low modulus, a high strength, and high resilience.

An elastomer material includes at least two components; the first component includes isocyanate prepolymer obtained through reaction of polyol and isocyanate, and its —NCO content is 22-30%; the second component includes 50-70 parts of polyether amine, 2-10 parts of liquid amine chain extender, 5-15 parts of hydroxyl-terminated polybutadiene, and 1-15 parts of hybrid hard segment material; the hybrid hard segment material includes one or more of nano titanium dioxide, nano aluminum oxide and nano silica. Through adjusting the —NCO content of the isocyanate prepolymer, increasing the hard segment content, and combining with the components in the second component, the invention ensures the elasticity of the polymer while improving its mechanical properties, and also improves the electrical insulation and wear resistance of the material.

The presently claimed invention is directed to a polyurea-polyetheramine copolymer obtained by reacting at least one polyisocyanate (A) and at least one isocyanate reactive component (B); wherein the at least one polyisocyanate (A) has an NCO functionality of at least ≥2.0; and the at least one isocyanate reactive component (B) is a polyetheramine having at least two secondary amine functional groups and at least one hydroxy functional group.

A process for preparing a polyurethane polymer comprises the step of: I) mixing a first component (100) comprising a polyisocyanate with a second reactant component (200) comprising a compound having Zerewitinoff-active hydrogen atoms in a mixing vessel (300) to obtain a reaction mixture (400), wherein the first reactant component (100) and/or the second reactant component (200) are contacted with a catalyst bed (500) before they are mixed in the mixing vessel (300) and/or the reaction mixture (400) is contacted with a catalyst bed (500), wherein the catalyst bed (500) contains a catalyst reversibly sorbed on a substrate, the catalyst catalyses the reaction of isocyanate groups with themselves or with Zerewitinoff-active compounds and the catalyst is released into the first component (100), second component (200) or reaction mixture (400) that is in contact with the catalyst bed (500), such that a reaction mixture (410) containing the catalyst is obtained.