Resinous compositions containing modified alumina hydrate crysta

Details Resinous compositions containing modified alumina hydrate crysta Resinous compositions containing modified alumina hydrate crysta

1982-04-05

1983-12-20

Jacobs, Lewis T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523505, 524437, C08K 310

Patent

active

044218761

ABSTRACT:
The present invention relates to a modified form of alumina hydrate filler, thermosetting and thermoplastic compositions having improved workability and mechanical properties containing such filler and methods of manufacturing such modified alumina hydrate filler. More specifically, the invention provides for the admixture of modified alumina hydrate crystals with a resinous composition in which the individual alumina hydrate crystal edges are substantially rounded, have a mean crystal size of less than about 35 microns and less than about 0.1% by volume of alumina hydrate crystals have a diameter of less than 2 microns. The resulting compositions have improved viscosity properties and exhibit good bending strength and flame retardant characteristics.

REFERENCES:
patent: 3058945 (1962-10-01), Piersol
patent: 3827997 (1974-08-01), Bergomi
patent: 4340579 (1982-07-01), Greber et al.

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