WERKWIJZE VOOR DE BEREIDING VAN POLYURETHANPOLYUREA MET EEN VOORNAMELIJK LINEAIRE STRUCTUUR, ALSMEDE WERKWIJZE TER VERVAARDIGING VAN GELAMINEERDE GELAAGDE MATERIALEN MET TOEPASSING DAARVAN.

摘要

The present disclosure is concerned with a novel transparent polyurethane polyurea which is particularly suitable for lamination to glass and glasslike transparent plastics. The polymer is the reaction product of high molecular weight diols, optionally low molecular weight diols, dihydroxy carboxylic acids, diisocyanates with only aliphatically and cycloaliphatically bound isocyanates and organic diamines having aliphatically and cycloaliphatically bound primary amino groups. It has specified contents of carboxyl groups and urea groups, and it has a minimum shear modulus at both 20 and 60 DEG C.