Patent · US Expired

Production of sheet-like polyurethane moldings

US6007752A · kind A · utility

2Cited by

5References

11Claims

0Family size

Assignee

BASF SE

Inventors

Dietrich Scherzer · Neustadt, DE
Ludwig Jung · Fürstenfeldbruck, DE
Bernd Bruchmann · Ludwigshafen, DE
Hans Renz · Meckenheim, DE

Key dates

Filing date	May 5, 1997
Grant date	Dec 28, 1999
Priority date	—
Expiry date	May 5, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/798
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Sheet-like polyurethane moldings are produced by impregnation of porous sheets with a prepolymer containing free isocyanate groups and reversibly blocked isocyanate-reactive groups or containing free isocyanate-reactive groups and reversibly blocked isocyanate groups, and subsequent reaction of the prepolymers in a heated mold.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.