POLYMETHACRYLATEE OR POLYMETHACRYLAMIDEE POLY*ALKENEE1*COMPLEX COMPOSITIONS

Japanese Patent JPS52152989

A

A complex (I) contains (1) a polymetha rylate of molecular wt. 4 x 104-106, and (2) a liquid polymer, with mol. wt. 200-10,000, of a 3-12C alkene-1. The ratio by wt. of (1):(2) is 4:1-2:3 (2:1). The polymethacrylate is obtd. by copolymerising (a) 1-10 wt.% of CH2=C(CH3)-CO-NH-A-NRR1, where R and R1 are 1-2C alkyl and A is 1-5C alkanediyl, (b) 15-30% of R2OOC-C(CH3)=CH2 where R2 is 1-6C alkyl, (c) 40-60% of R3OOC-C(CH3)=CH3 where R3 is 10-14C alkyl, and (d) 15-30% of R4OOC-C(CH3)=CH3, where R4 is 16-20C alkyl, in the presence of the liquid polyalkene. (I) is a viscosity index (VI) improver for lubricating oils esp. automatic transmission fluids and crankcase oils. (I) combines good VI improving properties with dispersant and antioxidant properties.

JPH03115305	PREVENTION OF DEPOSITION OF POLYMER SCALE AND PREVENTIVE AGAINST DEPOSITION OF POLYMER SCALE
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JPH11217402	PREVENTION METHOD OF POLYMERIZATION SCALE

ABURAHAMU MORUDOKOUITSUCHI
ROI ISAMU YAMAMOTO
UERAA KONRATSUDO KUROFUOODO
KARUMEN MITSUCHIERU KIYUSANO

JP6900077A

December 19, 1977

June 13, 1977

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TEXACO DEVELOPMENT CORP

C08F2/00; C08F2/44; C08F20/00; C08F20/34; C08F20/52; C08F255/00; C10M149/04; C10M157/00; C10M157/04; C10N20/04; C10N30/02; C10N30/04; C10N30/10; C10N40/08; C10N40/25; (IPC1-7): C08F2/44; C08F220/18; C10M1/32

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