Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-08-18
2009-08-25
Woodward, Ana L (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...
C525S070000, C525S080000, C525S084000, C525S085000, C525S902000
Reexamination Certificate
active
07579406
ABSTRACT:
The present invention relates to a transparent thermoplastic resin composition which characteristically contains A) 20-80 weight % of graft copolymer composed of a) conjugated diene rubber latex; b) intermediate layer prepared by copolymerization of acrylic acid alkylester derivative and aromatic vinyl derivative with the above a); and c) graft layer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, a romatic vinyl derivative and vinyl cyan derivative with the above b) and B) 20-80 weight % of MSAN copolymer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, aromatic vinyl derivative and vinyl cyan derivative. The transparent thermoplastic resin composition of the present invention has enhanced transparency, impact strength, surface gloss, weather resistance and color by being prepared by the method of the invention which is characterized by the steps of forming an intermediate layer by adding acrylic rubber to polybutadiene rubber, grafting, and regulating refractive indices of each monomers of a copolymer.
REFERENCES:
patent: 4767833 (1988-08-01), Yumoto et al.
patent: 6187862 (2001-02-01), Chang et al.
patent: 7019049 (2006-03-01), Yoo et al.
patent: 1 045 883 (2003-07-01), None
patent: 11-147920 (1999-06-01), None
Bahn Hyong-min
Choi Jeong-su
Lee Mi-young
Lee Won-seok
Yoo Keun-hoon
Cantor & Colburn LLP
LG Chem Ltd.
Woodward Ana L
LandOfFree
Transparent thermoplastic resin compositions and process for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transparent thermoplastic resin compositions and process for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transparent thermoplastic resin compositions and process for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4082652