Block copolymer

Details Block copolymer Block copolymer

2006-08-22

2006-08-22

Seidleck, James J. (Department: 1711)

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

Synthetic resins

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

C525S230000, C525S244000, C525S261000, C525S293000, C525S250000, C526S224000

Reexamination Certificate

active

07094833

ABSTRACT:
Provided are a block copolymer including a polymer block containing acrylonitrile or methacrylonitrile as a principal constituent, which is excellent in heat resistance, weatherability, oil resistance, flame retardancy, and low-temperature resistance and which can be economically produced; and a thermoplastic resin composition and an elastomer composition each containing the block copolymer. The block copolymer is produced by reversible addition-fragmentation chain transfer polymerization in the presence of a thiocarbonylthio group-containing compound.

REFERENCES:
patent: 6153705 (2000-11-01), Corpart et al.
patent: 6355718 (2002-03-01), Berge et al.
patent: 6512081 (2003-01-01), Rizzardo et al.
patent: 6642318 (2003-11-01), Chiefari et al.
patent: 6825290 (2004-11-01), Adam et al.
patent: 2000-154329 (2000-06-01), None
patent: 2002-241568 (2002-08-01), None
patent: WO 98/01478 (1998-01-01), None
patent: WO 99/05099 (1999-02-01), None
patent: WO 99/31144 (1999-06-01), None

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