C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/287, 402/411
C08F 238/00 (2006.01) C08F 210/02 (2006.01) C10L 1/195 (2006.01) C10L 1/18 (2006.01)
Patent
CA 1222348
Abstract of the Disclosure: Ethylene-alkyne copolymers which have a number-average molecular weight, determined by vapor phase osmometry, of from 500 to 500,000, prefer- ably from 500 to 10,000, especially from 1,000 to 5,000, and which contain, as copolymerized units, (A) from 70 to 99 percent by weight of ethylene and (B) an acetylenically unsaturated compound of the general formula (I) H-C?C-R1 I where R1 is (OCH2CH2)nH or CH2-R2, n is 1-20, R2 is -OH, -OCOR3 or -COOR3 and R3 is straight-chain or branched C1- C10-alkyl . Particularly suitable copolymers are ternary ethylene- alkyne-alkene copolymers which contain, as copolymerized units, from 50 to 99 percent by weight of (A), from 0.5 to 30 percent by weight of (B) and, in addition, (C) from 0.5 to 49.5 percent by weight of an olefinically un- saturated ester of the general formula (II) Image II where R4 is H or CH3, R5 is -OOC-R6 or -COOR6 and R6 is straight-chain or branched C1-C10-alkyl or hydrogen, and the sum of the percentages by weight of (A), (B) and (C) is 100, and a process for the preparation of the ethylene- alkyne copolymers, wherein the copolymerization of ethyl- ene with an acetylenically unsaturated compound of the general formula I, with or without an olefinically unsatu- rated ester of the general formula II, is carried out in a continuous or batchwise polymerization system at from 150 to 350°C under a pressure of from 500 to 3,000 bar in the presence of from 200 to 4,000 mole ppm, based on mono- mers, of an organic peroxide which decomposes into free radicals, in the presence or absence of oxygen and in the presence or absence of a polymerization regulator. The ethylene-alkyne copolymers can be used, in amounts of from 0.001 to 2.0 percent by weight, as addi- tives to petroleum distillates.
391322
Schramm Manfred
Schwartz Erich
Vogel Hans-Henning
Werner Michael
Basf Aktiengesellschaft
Robic Robic & Associes/associates
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