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
2005-01-18
2005-01-18
Nutter, Nathan M. (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...
C525S071000, C525S080000, C525S085000, C525S222000, C525S308000, C525S309000
Reexamination Certificate
active
06844396
ABSTRACT:
An acrylic resin composition with excellent impact resistance, weatherability, processability and low gloss is provided. The acrylic resin composition comprises, (A) 10 to 40 parts by weight of a high molecular weight acrylic (co)polymer which is a one-step or multi-step polymer containing 72 to 100% by weight of methyl methacrylate and 0 to 28% by weight of a copolymerizable monomer, the (co)polymer having a specific viscosity of at least 0.5 (solvent: toluene, concentration: 0.4%, temperature: 30° C.), wherein a polymer layer obtained in one of the steps contains at least 72% by weight of methyl methacrylate, has a specific viscosity of at least 0.5 and makes up at least 55% by weight of the total weight of the high molecular weight acrylic (co)polymer (A); (B) 0 to 80 parts by weight of an acrylic (co)polymer containing 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of a copolymerizable monomer, the acrylic (co)polymer having a specific viscosity of less than 0.5; (C) 10 to 90 parts by weight of an impact modifier with a multilayer structure, wherein the total of (A), (B) and (C) is 100 parts by weight and the composition has a melt flow index of 0.35 g/10 minutes to 1.4 g/10 minutes (230° C., 3.8 kg load).
REFERENCES:
patent: 5063259 (1991-11-01), Wanat et al.
patent: 5318737 (1994-06-01), Trabert et al.
patent: 5777034 (1998-07-01), Shah et al.
patent: 6555245 (2003-04-01), Tajima et al.
patent: 20020123568 (2002-09-01), Tajima et al.
Nishimura Riichi
Sugaya Takahiko
Tajima Kazuhisa
Kaneka Corporation
Kaneka Texas Corporation
Nutter Nathan M.
Westerman Hattori Daniels & Adrian LLP
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