Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1973-05-10
1978-08-22
Turer, Richard B.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 296RB, 260876R, C08L 5100, C08L 3300
Patent
active
041089464
ABSTRACT:
A thermoplastic graft polymer composition excellent in weather resistance, impact resistance and appearance is obtained by seed-polymerizing 50 to 95 parts by weight of a mixture (b) of 60% by weight or more of at least one acrylic ester, 39.9% by weight or less of at least one monomer copolymerizable therewith and 0.1 to 10% by weight of at least one crosslinking monomer having at least two non-conjugated C .dbd. C bonds in the presence of 5 to 50 parts by weight (solids) of a latex (particle size: 0.04 to 0.24 .mu.) of a crosslinked rigid resin (a) having a glass transition temperature of at least 50.degree. C., a decomposition temperature of at least 240.degree. C. and a gel content of at least 70% by weight or more to prepare two-layered crosslinked acrylic rubber particles (1) having a degree of swelling of 3 to 15, emulsion-graft-polymerizing 5 to 1,900 parts by weight of a monomer mixture (2) of 10 to 90% by weight of at least one aromatic vinyl compound and 90 to 10% by weight of at least one ethylenically unsaturated compound having the general formula CH.sub.2 = CRX, wherein R is H or CH.sub.3, and X is CN or COOR.sub.1 (wherein R.sub.1 is an alkyl group having 1 to 4 carbon atoms) in the presence of a latex containing 100 parts by weight of said two-layered crosslinked acrylic rubber particles (1) to obtain a graft polymer (3) and, if necessary, blending said graft polymer (3) with a rigid thermoplastic resin (4) so that 5 to 70% by weight of the two-layered crosslinked acrylic rubber particles (1) are contained in the resulting composition.
REFERENCES:
patent: 3041307 (1962-06-01), Baer
patent: 3041308 (1962-06-01), Baer
patent: 3458603 (1969-07-01), Griffin
patent: 3562235 (1971-02-01), Ryan
patent: 3763279 (1973-10-01), Kelley
patent: 3830878 (1974-08-01), Kato et al.
Handa Ryoji
Kamada Kazumasa
Kusakawa Norihisa
Yamamoto Keita
Mitsubishi Rayon Co. Ltd.
Turer Richard B.
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