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Multifunctional polymeric additive

专利摘要

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基本信息

专利类型:
发明专利
申请/专利号:
US3637610DA
申请日期:
1970-02-25
专利申请人:
埃克森研究工程公司
分类号:
["C08F8/00","C08F8/32","C08L83/04","C08L83/00","C10M149/10","C10M149/06","C10M149/00","C08F27/08"]
发明/设计人:
NORMAN JACOBSON
权利要求: What is claimed is:1. An oil-soluble polymeric additive having multifunctional properties, including viscosity index improving and sludge dispersing properties, which comprises a derivative, selected from the group consisting of amides and imides, of a polymeric material of from about 5000 to 2,000,000 average molecular weight, having a plurality of acid groups, selected from the class consisting of carboxylic acid and carboxylic anhydride groups, distributed along the polymeric chain, and of a pseudoaromatic heterocyclic amino compound having oxygen or nitrogen in the ring, said heterocyclic compound being selected from the group consisting of an aminoalkyl pyridine of the formula:--(CH2)a—NH2HO CHand an aminoalkyl furan of the formula: o R- -(CH2)n-NH2IIC-----CHwherein in each formula n is a number from 1 to 5 and ^ach of R and R' is hydrogen or to C5 alkyl, carboxylic acid or anhydride of from 3 to 8 carbon atoms.7. Polymeric additive as defined by claim 1 wherein said polymeric material is a copolymer of vinyl acetate, maleic anhydride, and mixed C8 to Ci8 aliphatic alcohol esters of fumaric acid.8. Polymeric additive as defined by claim 1 in which the ratio of amino compound to polymeric material in said derivative is within the range of from 0.1 to 2 moles of amino compound per carboxylic anhydride group in said polymeric material.9. Polymeric additive as defined by claim 1 in which the ratio of amino compound to polymeric material in said derivative is within the range of from 0.1 to 1 mole of amino compound per carboxylic acid group in said polymeric material.10. A process for preparing an oil-soluble multifunctional polymeric additive which comprises reacting a polymeric material of from 5000 to 2,000,000 average molecular weight, having from 1 to 25 mole percent of acid groups, selected from the class consisting of carboxylic acid and carboxylic anhydride groups, distributed along the polymeric chain, with a heterocyclic amino compound selected from the group consisting of an aminoalkyl pyridine of the formula:and an aminoalkyl furan of the formula:O RHO^ ^CH(CII2)n-NH3HC----CHwherein in each formula n is a number from 1 to 5 and each of R and R' is hydrogen or Q to C5 alkyl, said reaction being conducted at a temperature in the range of from 200 to 450° F. for a period sufficient to cause the splitting out of water of reaction, whereby amide or imide formation between said amino group and an acid group occurs, the amount of heterocyclic amino compound used in said reaction being within the range of about 0.1 to 2 moles of amino compound per acid anhydride group and within the range of about 0.1 to 1 mole of amino compound per carboxylic acid group in said polymeric material.11. Process as defined by claim 10 wherein said heterocyclic amino compound is an aminoalkyl pyridine derivative.12. Process as defined by claim 10 wherein said heterocyclic amino compound is an aminoalkyl furan.13. Process as defined by claim 10 wherein said polymeric material is a copolymer of a C2 to C3 alkylene ester of a C2 to C6 fatty acid, a C8 to C2o aliphatic mono-hydric alcohol ester of a C4 to C6 alpha,beta-unsaturated dicarboxylic acid, and an unsaturated carboxylic acid or anhydride of from 3 to 8 carbon atoms.