摘要:
Polymers Ia and Ib carrying functional groups and obtainable byA)1. hydrogenation of the olefinic double bonds of a polymer IIa comprisinga) from 20 to 100% by weight of a conjugated diene,b) from 0 to 80% by weight of an aromatic vinyl compound, andc) from 0 to 20% by weight of further comonomers,to give the hydrogenated polymer IIb,2. metallation of IIb using an organoalkali metal compound to give IIc,3. reaction of IIc with a diaziridine III to give IId, and4. hydrolysis or alcoholysis of IId to give Ia, or byB)1. partial hydrogenation of IIa to give a partially hydrogenated polymer IIb',2. epoxidation of the double bonds of IIb' to give IIe, and3. reaction of IIe with a compound IV carrying functional groups, to give Ib,are suitable as viscosity index improvers for engine oils.
摘要:
The novel alkadiene/vinyl-aromatic copolymers which contain side groups and have a random, block-like or star-like structure and whose polymerized alkadiene comonomer units are partially or completely selectively hydrogenated, and which contain one or more side groups having one or more radicals capable of (4+2) cycloaddition (Diels-Alder reaction) with dienophiles are suitable as such as viscosity index (VI) improvers or can be used for the preparation of dispersant VI improvers. For this purpose, they are reacted with one or more dienophiles which are capable of a Diels-Alder (4+2) cycloaddition reaction and preferably contain strongly polar functional groups. The resulting selectively hydrogenated alkadiene/vinylaromatic copolymers having one or more side groups which constitute a (4+2) cycloadduct or a Diels-Alder adduct can be modified in their performance characteristics by further reaction with ammonia, an organic amine, an alkylene oxide, a polyalkylene oxide and/or a condensate of ammonia and/or an organic amine with an alkylene oxide.
摘要:
Polymers Ia and Ib carrying functional groups and obtainable byA) 1. hydrogenation of the olefinic double bonds of a polymer IIa comprisinga) from 20 to 100% by weight of a conjugated diene,b) from 0 to 80% by weight of an aromatic vinyl compound, andc) from 0 to 20% by weight of further comonomers,to give the hydrogenated polymer IIb, 2. metallation of IIb using an organoalkali metal compound to give IIc, 3. reaction of IIc with a diaziridine III to give IId, and 4. hydrolysis or alcoholysis of IId to give Ia, or byB) 1. partial hydrogenation of IIa to give a partially hydrogenated polymer IIb', 2. epoxidation of the double bonds of IIb' to give IIe, and 3. reaction of IIe with a compound IV carrying functional groups, to give Ib,are suitable as viscosity index improvers for engine oils.
摘要:
A copolymer with stellate branching, of the general formula [A-].sub.k X, where A is the monovalent radical of a homopolymer, block copolymer or random copolymer of a conjugated diene and/or vinyl-aromatic hydrocarbon, k is a number from 1 to 10, and X is the k-valent radical of a coupling center produced by coupling with hexatriene, and the product of the hydrogenation thereof are described.
摘要:
A process for the preparation of polymers of isobutene having tertiary chloride groups by reaction of appropriate polymers which have been prepared by cationic polymerization of isobutene with hydrogen chloride.
摘要:
A modified polyisobutene has the general formula I ##STR1## where R.sup.1 is an olefinically unsaturated divalent radical, R.sup.2 is one of the radicals --CH.sub.2 --C(.dbd.CH.sub.2)--CH.sub.2 -- or --CH.sub.2 --C(CH.sub.3).dbd.CH-- or m and n are each a degree of polymerization in particular from 1 to 1000.
摘要:
Hydrocarbons and polymers thereof, of the structure (I)R--C(CH.sub.3).sub.2 --CH.sub.2 --C(CH.sub.3).sub.2 --CH.sub.2 --CH.dbd.CH--CH.sub.2 --Cl (I)where R is a hydrocarbon radical, are prepared by reacting corresponding starting materials which contain chlorine bonded to tertiary carbon, of the structureR--C(CH.sub.3).sub.2 --CH.sub.2 --C(CH.sub.3).sub.2 --Cl (II)with from 1 to 10 moles of butadiene in the presence of a Friedel-Crafts catalyst in a solvent which is inert to the catalyst, and the hydrocarbons or polymers thereof can be reacted in a further step of the process with a compound from the group comprising ammonia, primary or secondary amine or polyamine, amino alcohol, amino ether, hydrazine or hydrazine which is substituted up to three times.
摘要:
Polymers having terminal halogen atoms and consisting of cationically polymerizable, olefinically unsaturated monomers are obtainable by polymerization using an initiator system comprising a halogen-containing Lewis acid and a 3-membered to 8-membered cyclic ether.
摘要:
Hydrocarbons and polymers thereof, of the structure (I)R--C(CH.sub.3).sub.2 --CH.sub.2 --C(CH.sub.3).sub.2 --CH.sub.2 --CH.dbd.CH--CH.sub.2 --Cl (I)where R is a hydrocarbon radical, are prepared by reacting corresponding starting materials which contain chlorine bonded to tertiary carbon, of the structureR--C(CH.sub.3).sub.2 --CH.sub.2 --C(CH.sub.3).sub.2 --Cl (II)with from 1 to 10 moles of butadiene in the presence of a Friedel-Crafts catalyst in a solvent which is inert to the catalyst, and the hydrocarbons or polymers thereof can be reacted in a further step of the process with a compound from the group comprising ammonia, primary or secondary amine or polyamine, amino alcohol, amino ether, hydrazine or hydrazine which is substituted up to three times.
摘要:
Stilbene compounds of the general formula Ia, Ib or IcR.sup.1 R.sup.2 R.sup.3 Ar.sup.1 --CH.dbd.CH--Ar.sup.3 R.sup.4 R.sup.5 R.sup.6 (Ia)R.sup.1 R.sup.2 R.sup.3 Ar.sup.1 --CH.dbd.CH--Ar.sup.2 R.sup.4 R.sup.5 R.sup.6 --CH.dbd.CH--Ar.sup.3 R.sup.7 R.sup.8 R.sup.9 (Ib)R.sup.1 R.sup.2 R.sup.3 Ar.sup.1 --CH.dbd.CH--Ar.sup.2 (CH.sub.2).sub.n Ar.sup.3 --CH.dbd.CH--Ar.sup.4 R.sup.4 R.sup.5 R.sup.6 (Ic)where Ar.sup.1 to Ar.sup.4 are identical or different aromatic or quasi-aromatic radicals and n is from 0 to 20 and where either at least one of the radicals R.sup.1 to R.sup.6 or R.sup.9 is hydrocarbon-solubilizing alkyl, alkoxy, dialkylamino or diarylamino of 4 or more carbon atoms in the alkyl moiety or, if formula Ic contains no radicals R.sup.1 to R.sup.6, n is not less than 4, are prepared by metalating a toluene/xylene analog R.sup.1 R.sup.2 R.sup.3 ArCH.sub.3 or H.sub.3 CR.sup.4 R.sup.5 R.sup.6 ArCH.sub.3 with an appropriate aldehyde Ar-CHO or dialdehyde OHC-Ar-CHO to form correspondingly substituted metal mono- or dialcoholates which are hydrolyzed/solvolyzed and dehydrated or pyrolyzed, and are used for preparing bifunctional initiators for anionic polymerization.
摘要翻译:通式Ia,Ib或Ic的二苯乙烯化合物R1R2R3Ar1-CH = CH-Ar3R4R5R6(Ia)R1R2R3Ar1-CH = CH-Ar2R4R5R6-CH = CH-Ar3R7R8R9(Ib)R1R2R3Ar1-CH = CH-Ar2(CH2)nAr3-CH = CH-Ar 4 R 4 R 5 R 6(Ic)其中Ar 1至Ar 4是相同或不同的芳族或准芳族基,n为0至20,并且其中基团R 1至R 6或R 9中的至少一个为烃溶解性烷基,烷氧基, 如果式Ic不含R 1至R 6基团,n不小于4,则通过用合适的醛Ar-金属化甲苯/二甲苯类似物R1R2R3ArCH3或H3CR4R5R6ArCH3制备二烷基氨基或二芳基氨基, CHO或二醛OHC-Ar-CHO形成相应取代的水解/溶剂分解和脱水或热解的金属单或二醇化物,并用于制备用于阴离子聚合的双功能引发剂。