Punchable epoxy based laminating compositions

Details Punchable epoxy based laminating compositions Punchable epoxy based laminating compositions

1986-07-30

1988-12-20

Ives, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428248, 428249, 428251, 428285, 428288, 428290, 428414, 428415, 428416, 4285375, B32B 506, B32B 1710, H05K 100

Patent

active

047924799

ABSTRACT:
Disclosed is a solution of about 2 to about 25 percent by weight based on total solids, of an oligomer having at least two carboxylic acid groups polymerized from an unsaturated fatty acid having at least ten carbon atoms, up to about 20 percent by weight based on total solids of a phenolic resin, an epoxy resin in an amount from about stoichiometric up to about 20 percent excess equivalents of epoxide groups, up to about 2 percent by weight based on total solids of a catalyst and about 10 to about 90 percent by weight based on total solution weight of the solvent. Also disclosed is a prepreg which comprises a substrate impregnated with the solution, dried and cured to the B-stage, and a laminate which comprises a stack of prepregs, pressed under heat and cured to the C-stage.

REFERENCES:
patent: 3218370 (1965-11-01), Fry et al.
patent: 3536546 (1970-10-01), Melsen et al.
patent: 4477512 (1984-10-01), Thomas et al.
patent: 4501787 (1985-02-01), Marchetti et al.
patent: 4539253 (1985-09-01), Hirshbuehler et al.

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