Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2003-12-10
2008-10-07
Egwim, Kelechi C (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S523000, C524S527000, C525S080000, C525S085000, C525S227000, C525S239000
Reexamination Certificate
active
07432320
ABSTRACT:
There is provided a vinyl chloride resin composition, which is excellent in processability and can produce a processed article having excellent physical property or a formed molding having excellent property. A processing aid having specific viscosity of at least 0.5 is combined with a vinyl chloride resin, wherein the aid is obtained by polymerizing 1 to 50 parts by weight of a monomer mixture (B) comprising 0 to 49% by weight of methyl methacrylate, 51 to 100% by weight of at least one monomer selected from the group consisting of a methacrylate ester except methyl methacrylate and an acrylate ester, and 0 to 20% by weight of a vinyl monomer copolymerizable therewith, in the presence of a latex of a (co)polymer having specific viscosity of at least ηsp0.7, which is obtained by polymerizing in emulsion 99 to 50 parts by weight of a monomer mixture (A) comprising 51 to 100% by weight of methyl methacrylate, 0 to 49% by weight of at least one monomer selected from the group consisting of a methacrylate ester except methyl methacrylate and an acrylate ester, and 0 to 20% by weight of a vinyl monomer copolymerizable therewith, wherein the total amount of (A) and (B) is 100 parts by weight.
REFERENCES:
patent: 4179481 (1979-12-01), Tuzuki et al.
patent: 4268636 (1981-05-01), Iizuka et al.
patent: 5093420 (1992-03-01), Matsuba et al.
patent: 0 392 465 (1990-10-01), None
patent: 392 465 (1990-10-01), None
patent: 2 180 595 (1973-11-01), None
patent: 1 378 434 (1974-12-01), None
patent: 1378434 (1974-12-01), None
patent: 47-23443 (1972-10-01), None
patent: 49-90338 (1974-08-01), None
patent: 49-120945 (1974-11-01), None
patent: 50-123761 (1975-09-01), None
patent: 50-123764 (1975-09-01), None
patent: 56-163139 (1981-12-01), None
patent: 60-258241 (1985-12-01), None
patent: 01-215846 (1989-08-01), None
patent: 01215846 (1989-08-01), None
patent: 10-17626 (1998-01-01), None
patent: 10-82911 (1998-07-01), None
patent: 10-182911 (1998-07-01), None
Miki Yasuhiro
Sakashita Noriko
Takaki Akira
Egwim Kelechi C
Kaneka Corporation
Westerman, Hattori, Daniels & Adrian , LLP.
LandOfFree
Processing aid for vinyl chloride resin and vinyl chloride... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Processing aid for vinyl chloride resin and vinyl chloride..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processing aid for vinyl chloride resin and vinyl chloride... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3987920