Molding compositions of a glass fiber-reinforced olefin polymer

Details Molding compositions of a glass fiber-reinforced olefin polymer Molding compositions of a glass fiber-reinforced olefin polymer

2011-02-01

2011-02-01

Harlan, Robert D. (Department: 1762)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S494000

Reexamination Certificate

active

07879931

ABSTRACT:
The invention relates to a glass fiber-reinforced molding composition composed of an olefin polymer, in particular a propylene polymer. The molding composition comprises an olefin polymer which contains 5-50% by weight of glass fibers which are bonded to the olefin polymer by means of a compatibilizer, and from 10−4to 1% by weight, preferably from 10−3to 1031 1% by weight, of a phthalocyanine pigment as the nucleating agent. The low costs and the fact that even a very small fraction of the phthalocyanine pigment in the polymer leads to sufficient nucleation ensures extremely inexpensive production. The nucleation with the phthalocyanine pigment leads to an improvement in the impact strength, and also in the yield stress and tensile strain at break of the molding composition.

REFERENCES:
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patent: 5931997 (1999-08-01), Babler
patent: 663418 (1999-03-01), None
patent: 663418 (1999-03-01), None
patent: 00/48957 (2000-08-01), None
Iroh, Jude O. & Berry, J.P. “Heterogeneous nucleation of short glass fibre-polypropylene composites.”Polymer, vol. 34, No. 22. pp. 4747-4751. (1993).
Iroh, Jude O. & Berry J.P. “Mechanical properties of nucleated polypropylene and short glass fiber-polypropylene composites.” European Polymer Journal vol. 32 No. 12. pp. 1425-1429, (1996).

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