C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5057
C08L 57/00 (2006.01) C08F 265/06 (2006.01) C08L 27/04 (2006.01) C08L 27/06 (2006.01) C08L 101/00 (2006.01) C08L 51/00 (2006.01)
Patent
CA 1340349
A processing aid for a thermoplastic resin is disclosed, which is a two-stage polymer obtained by polymerizing (B) 5 to 50 parts by weight of a monomer or monomer mixture composed mainly of methyl methacrylate in the presence of (A) 50 to 95 parts by weight of a polymer comprising 100 to 50% by weight of units of a methacrylic acid ester other than methyl methacrylate and 0 to 50% by weight of units of other monomer copolymerizable with the methacrylic acid ester and having a reduced viscosity ~sp/C not larger than 2.0 dl/g, so that the total amount of the components (A) and (B) is 100 parts by weight and the reduced viscosity ~sp of the final polymer is not larger than 2.0 dl/g. A thermoplastic resin having the processing aid incorporated therein has an improved shaping processability, and a shaped article mode therefrom has good surface characteristics.
594795
Kaneda Masahiro
Kishida Kazuo
Kitai Kiyokazu
Okano Kenji
Mcfadden Fincham
Mitsubishi Rayon Company Ltd.
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