Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-12-23
1978-01-31
Derrington, James H.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
106308Q, 106309, 260 13, 260 37R, 260 37SB, 260 37AL, 260 37PC, 260 40R, 260 4215, 260 4216, 260756, 427214, C08K 904, C08K 910
Patent
active
040714942
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
patent: 3956230 (1976-05-01), Gaylord
Champion International Corporation
Derrington James H.
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