| 摘要 |
1483681 Modified polyolefins EXXON RESEARCH & ENG CO 14 March 1975 [27 March 1974] 10718/75 Heading C3P [Also in Division C5] Bis-oxazolines of formula where X is C 1-3 alkyl or hydroxyalkyl, at least one X on each ring being a group of formula (CH 2 ) n OH in which n is 1-3, R is a substantially saturated hydrocarbyl group of at least 50 carbon atoms, and m is 0-6, are prepared by reaction of (1) 1 molar proportion of a substantially saturated hydrocarbyl-substituted C 4-10 dicarboxylic acid or anhydride or ester, the hydrocarbyl group having at least 50 carbon atoms, with (2) 2 molar proportions of a C 4-8 aminalkanol of formula where X is as defined above, at 140-240‹ C. for 0À5-24 hours with removal of three molar proportions of water. In examples, various different polyisobutenyl succinic anhydrides, prepared from chlorinated polyisobutylene and maleic anhydrides are reacted with 2-amino-2-hydroxymethyl - 1,3 - propane diol or 2 - amino - 2- methyl-1,3-propane diol. Use.-Additives for fuels, lubricants and refinery streams. |
