Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1988-06-14
1989-11-21
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524751, 524802, 524840, 524871, 524874, 524454, C08G 1883
Patent
active
048823791
ABSTRACT:
A crystalline polyester film or sheet coated with a primer composition consisting essentially of a carboxylated polyurethane, wherein the carboxyl groups are introduced by esterifying the terminal hydroxyl groups and amidizing any terminal amine groups of the polyurethane with a dicarboxylic acid anhydride. Such primer compositions form continuous wet films and dry coatings and provide surfaces receptive to a variety of surface finishes such as further polymer coatings and inks.
REFERENCES:
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patent: 3994849 (1976-11-01), Dunlop
patent: 4012349 (1977-03-01), Matsuda et al.
patent: 4016122 (1977-04-01), Matsuda et al.
patent: 4018849 (1977-04-01), Chang et al.
patent: 4310565 (1982-01-01), Lehner et al.
E.I. Du Pont de Nemours and Company
Hoke Veronica P.
Steyermark Paul R.
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