Stock material or miscellaneous articles – Composite – Including interfacial reaction product of adjacent layers
Patent
1989-11-20
1992-08-25
Sluby, P. C.
Stock material or miscellaneous articles
Composite
Including interfacial reaction product of adjacent layers
428447, 428493, 428495, 428519, B32B 704, B32B 2512
Patent
active
051418169
ABSTRACT:
A method of molding articles having layers or sections of varying hardness in which the interface between the diverse hardness consists of a permanent homogeneous intermaterial crosslink and therefore continuous chemical bond. The invention contemplates using combinations of selected peroxide catalyzed reactions to crosslink very high molecular weight, heat curable, high consistency polymers of diverse cured hardness across composition boundaries. The technique involves combining selected heat-curable materials of various hardnesses and combining each with selected peroxide crosslinking catalysts having various half-lifes with respect to free radical decay.
REFERENCES:
patent: 3058859 (1962-10-01), Amberg
patent: 4869968 (1989-09-01), Coran et al.
patent: 5002808 (1991-03-01), Hahn et al.
Beauchaine Donald F.
Ralph Vernon C.
Walker Francis J.
Honeywell Inc.
MacKinnon Ian D.
Mersereau Charles G.
Sluby P. C.
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