Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1997-05-05
1999-12-28
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
264321, 264324, 528 45, 528 48, 528 55, 528 67, 528 73, B29C 6700, C08G 1810, C08G 1832
Patent
active
060077522
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.
REFERENCES:
patent: 4204051 (1980-05-01), Wellner et al.
patent: 4786655 (1988-11-01), Grogler et al.
patent: 4812368 (1989-03-01), Scherzer et al.
patent: 4894429 (1990-01-01), Grogler et al.
patent: 5548057 (1996-08-01), Hirayama et al.
Bruchmann Bernd
Jung Ludwig
Renz Hans
Scherzer Dietrich
BASF - Aktiengesellschaft
Borrego Fernando A.
Tentoni Leo B.
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