Curing agent for epoxy resin laminating compositions comprising

Details Curing agent for epoxy resin laminating compositions comprising Curing agent for epoxy resin laminating compositions comprising

1979-07-17

1982-01-19

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

260 332EP, 428273, 428285, 428290, 428901, 525524, 528103, B32B 1704, C08G 5918, C08G 5938, C08G 5946, C08G 5956

Patent

active

043117538

ABSTRACT:
Curing agents for mixed di- and tetra-functional epoxy resin laminating compositions comprise a mixture of dicyandiamide and from 0.01 to 1 parts per part of dicyandiamide of a tetraalkylguanidine. B-staged prepregs for cores and for multi-layer bonding sheets having superior storage stability and adapted to provide reproducible multilayer laminates are made from laminating compositions employing the new curing agent combination.

REFERENCES:
patent: 2637715 (1953-05-01), Ott
patent: 3391113 (1968-07-01), Lopez et al.
patent: 3523037 (1970-08-01), Chellis et al.
patent: 3600263 (1971-08-01), Lapitz
patent: 3741858 (1973-06-01), Fujiwara et al.

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