Processes for producing colored glass or glass-ceramic articles

Details Processes for producing colored glass or glass-ceramic articles Processes for producing colored glass or glass-ceramic articles

1990-07-27

1991-08-06

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Including interfacial reaction product of adjacent layers

428421, 428429, 428435, 428447, 428448, 4284735, B32B 704, B32B 3106

Patent

active

050377019

ABSTRACT:
The invention relates to articles with a non-stick coating. It relates in particular to an article consisting of a substrate whose surface has -OH groups, and of at least one non-stick polymer layer, said article having also, applied between said substrate and said non-stick polymer layer, a layer which is obtained by making an appropriate bifunctional organosilane react with a polyamic-acid precursor of polyamide-imide and with -OH groups of the substrate surface, then drying and converting said polyamic-acid into a polyamide-imide by heating at an appropriately high temperature. The invention also provides processes and compositions to make non-stick glass and glass-ceramic cookware having clear, vivid, brilliant, attractive colors and stable and durable decorating patterns. Said coloring is achieved by precoating the substrate surface with a polyimide resin containing colored pigment, and preferably, an organosilane.

REFERENCES:
patent: 3260691 (1966-07-01), Lavin et al.
patent: 3558345 (1971-01-01), Baum et al.
patent: 4329399 (1982-05-01), Swerlick
patent: 4353950 (1982-10-01), Vassilion
patent: 4562119 (1985-12-01), Darms et al.
patent: 4778727 (1988-10-01), Tesoro et al.
patent: 4808473 (1989-02-01), Brooks
patent: 4961996 (1990-10-01), Carre et al.

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