Patent ID: 11965108
Assignee: COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A composition comprising:
(a) a polyurethane polymer which is a reaction product of a reaction mixture comprising:
(a1) a polyisocyanate,
(a2) a compound having an isocyanate-reactive group, which comprises a polyester polyol in an amount of more than 10 wt %, based on a total weight of the compound having an isocyanate-reactive group,
(a3) optionally an emulsifier,
(a4) optionally a solvent, and
(a5) optionally a reactive diluent;

(b) an organic antioxidant in an amount of 0.001 wt % to 1 wt %, based on a total weight of solid components of the composition;
(c) a chelating agent;
(d) water;
(e) optionally a stabilizer;
(f) optionally a crosslinking agent; and
(g) optionally an additive,
wherein the polyurethane polymer (a) has a melting enthalpy of more than 15 J/g at 20 to 100° C., based on a first heating curve measured by DSC according to DIN 65467, or a film formed by drying the composition has a melting enthalpy of more than 15 J/g at 20 to 100° C., based on a first heating curve measured by DSC according to DIN 65467.