A polyurethane composition is provided. The polyurethane composition comprises (A) a polyurethane-prepolymer prepared by reacting at least one polyisocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether random copolymer polyol synthesized by reacting a starting material polyether polyol with at least one monomeric polyhydric alcohol and at least one monomeric multifunctional carboxylic acid or anhydride thereof. The polyurethane foam prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability, superior tear strength, enhanced abrasion resistance and good hydrolysis resistance. A polyurethane product prepared with said foam, a method for preparing the polyurethane foam and a method for improving the performance property of the polyurethane foam are also provided.

A polyurethane composition is provided. The polyurethane composition comprises (A) a polyurethane-prepolymer prepared by reacting at least one polyisocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether random copolymer polyol synthesized by reacting a starting material polyether polyol with at least one monomeric polyhydric alcohol and at least one monomeric multifunctional carboxylic acid or anhydride thereof. The polyurethane foam prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability, superior tear strength, enhanced abrasion resistance and good hydrolysis resistance. A polyurethane product prepared with said foam, a method for preparing the polyurethane foam and a method for improving the performance property of the polyurethane foam are also provided.

The present invention relates to a melt processable thermoplastic polyurethane-urea composition formed by a continuous bulk process without the presence of solvent using a polyol component, an isocyanate component, and chain extender component comprising a hindered aromatic diamine.

A two-component polyurethane composition including a polyol component and a polyisocyanate component, wherein the polyol component comprises at least one polyester polyol A1 based on dimer fatty acids and/or dimer fatty alcohols having an OH number of 65-350 mg KOH/g, at least one polybutadiene polyol A2 and at least one alkoxylated alkylenediamine A3. The polyurethane composition has high strength and only a minor dependence of the mechanical properties, especially strength, on temperature, especially in the range from −40° C. to +100° C.

A polyurethane composition is provided. The polyurethane composition comprises (A) one or more prepolymers prepared by reacting at least one isocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether block copolymer polyol synthesized by reacting a starting material polyether polyol with a C.sub.4-C.sub.20 lactone. The foamed or non-foamed polyurethane product prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability, improved curing speed, light stability, heat stability and superior mechanical strength. A method for preparing the polyurethane composition and a method for improving the performance property of the polyurethane product are also provided.

A polyurethane composition is provided. The polyurethane composition comprises (A) one or more prepolymers prepared by reacting at least one isocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether block copolymer polyol synthesized by reacting a starting material polyether polyol with a C.sub.4-C.sub.20 lactone. The foamed or non-foamed polyurethane product prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability, improved curing speed, light stability, heat stability and superior mechanical strength. A method for preparing the polyurethane composition and a method for improving the performance property of the polyurethane product are also provided.

The present invention relates to compositions comprising a) 20-80% by weight, based on the total mass of constituents of the composition, of at least one sulfonic acid functionalized with at least one hydroxy and/or amino group and/or at least one sulfonic acid derivative functionalized with at least one hydroxy and/or amino group and b) 80-20% by weight, based on the total mass of constituents of the composition, of at least one compound having at least two OH groups, a method for the preparation thereof and use thereof.

A polyurethane composition is provided. The polyurethane composition comprises (A) one or more polyurethane-prepolymers prepared by reacting at least one polyisocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether block copolymer polyol synthesized by reacting a starting material polyether polyol with a C.sub.4-C.sub.20 lactone. The polyurethane foam prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability and superior tear strength. A polyurethane product prepared with said foam, a method for preparing the polyurethane foam and a method for improving the performance property of the polyurethane foam are also provided.

A polyurethane composition is provided. The polyurethane composition comprises (A) one or more polyurethane-prepolymers prepared by reacting at least one polyisocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether block copolymer polyol synthesized by reacting a starting material polyether polyol with a C.sub.4-C.sub.20 lactone. The polyurethane foam prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability and superior tear strength. A polyurethane product prepared with said foam, a method for preparing the polyurethane foam and a method for improving the performance property of the polyurethane foam are also provided.

A two-component polyurethane composition including a polyol component and a polyisocyanate component, wherein the polyol component comprises at least one polyester polyol A1 based on dimer fatty acids and/or dimer fatty alcohols having an OH number of 65-350 mg KOH/g, at least one polybutadiene polyol A2 and at least one alkoxylated alkylenediamine A3. The polyurethane composition has high strength and only a minor dependence of the mechanical properties, especially strength, on temperature, especially in the range from −40° C. to +100° C.