Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1980-09-09
1983-01-18
Willis, Jr., P. E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156242, 1562755, 20415915, 20415918, 20415919, 427 531, 427 541, 428 40, 428287, 428290, 428295, 428345, 428375, 428913, B32B 1702, B32B 2616, C08F 800
Patent
active
043692230
ABSTRACT:
A preimpregnated material has a reinforcement substrate impregnated with a thermoset resin mix which includes an initiator susceptible to light in the visible range. The material has cover films in the conventional manner but at least one of them is opaque whereby to protect the material from premature hardening. It gels and cures on exposure to ordinary daylight. The material has wide applicability in patching or locally reinforcing, and in laying-up laminating processes.
A preferred mix has a polyester resin, or small amount of a thickener and a photoinitiator system comprising tribenzylamine, rosin and a benzoyl substituted-oxime carbonate ester.
REFERENCES:
patent: 3241997 (1966-03-01), Schutzner
patent: 3719539 (1973-03-01), Lamb et al.
patent: 3737481 (1973-06-01), Vargin et al.
patent: 3867153 (1975-02-01), MacLachlan
patent: 4214026 (1980-07-01), Ibata et al.
Scott Bader Company Limited
Willis, Jr. P. E.
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