Preparation of impact-resistant thermoplastic materials on...

Details Preparation of impact-resistant thermoplastic materials on... Preparation of impact-resistant thermoplastic materials on...

2002-11-08

2009-10-27

Teskin, Fred M (Department: 1796)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S316000, C525S940000

Reexamination Certificate

active

07608669

ABSTRACT:
This invention describes the obtainment of impact-resistant materials from a block copolymer that comprises as monomers an alkadiene (conjugated diene) and a vinyl aromatic compound, which is used as impact modifier to obtain such materials and in which, at least, one of the blocks of the vinyl aromatic compound is polydisperse. The invention allows obtaining morphologies such as rods, points or capsules by incorporating such copolymer into a polymeric matrix derived from vinyl aromatic monomers independently from other agents such as chain transfer agents, and achieving increases, in the impact values up to 50% through the use of the copolymer of this invention.

REFERENCES:
patent: 4153647 (1979-05-01), Glukhovskol
patent: 4584346 (1986-04-01), Kitchen
patent: 5229472 (1993-07-01), Binsbergen et al.
patent: 5428106 (1995-06-01), Schrader
patent: 5705569 (1998-01-01), Moczygemba et al.
patent: 6235847 (2001-05-01), Hoshi et al.
patent: 0 879 836 (1998-11-01), None

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