Polyolefin nanocomposites

Details Polyolefin nanocomposites Polyolefin nanocomposites

1997-12-01

1999-06-08

Merriam, Andrew E. C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523216, 524262, 524445, 524492, 524504, 524528, 525285, 525301, C08K 906

Patent

active

059105232

ABSTRACT:
Composites from a semi-crystalline polyolefin and nanometer sized fillers with improved modulus, tensile strength and crack growth resistance are disclosed. The nanometer sized fillers are first functionalized with an aminosilane. Thereafter, a carboxylated or maleated polyolefin is grafted to the filler through an amine-carboxyl reaction. The resulting modified filler is dispersed in a semi-crystalline polyolefin (eg. polyethylene or polypropylene). Co-crystallization between the carboxylated or maleated polyolefin and the semi-crystalline polyolefin can improve interaction between the filler and semi-crystalline polyolefin.

REFERENCES:
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patent: 4868226 (1989-09-01), Mitsuno et al.
patent: 5256720 (1993-10-01), Kuwata et al.
patent: 5514734 (1996-05-01), Maxfield et al.
patent: 5578672 (1996-11-01), Beall et al.
patent: 5637629 (1997-06-01), Moro et al.

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