Compatibilization of hydroxyl-containing fillers and thermoplast

Details Compatibilization of hydroxyl-containing fillers and thermoplast Compatibilization of hydroxyl-containing fillers and thermoplast

1977-01-26

1982-03-02

Derrington, James H.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

106308M, 106308Q, 106309, 427214, 524531, 524447, 524445, 524452, 524427, C08K 904, C08K 910

Patent

active

043177654

ABSTRACT:
Hydroxyl-containing filler reinforced thermoplastic polymers, such as polyolefins, are disclosed having improved physical properties such as impact strength, break strength and flexural modulus. The filler is compatibilized with a thermoplastic polymer containing labile atoms by mixing the two together in the presence of a coupling agent, such as maleic anhydride and a free radical initiator such as a peroxide catalyst. In a preferred embodiment, clay is coated with polyethylene by mixing the two in the presence of a peroxide catalyst and maleic anhydride and the coated filler is then compounded with additional polyethylene. In another preferred embodiment, a filler is coated with a polyolefin having a high melt index and the coated filler is then compounded with a polyolefin having a lower melt index. Also disclosed are various means for molding the compatibilized composites of this invention.

REFERENCES:
patent: 3304197 (1967-02-01), Pundsack et al.
patent: 3471439 (1969-10-01), Bixler et al.
patent: 3519593 (1970-07-01), Bolger

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