Novel processing aids for natural and synthetic rubber compounds
AssigneeTechnical Processing, Inc.
InventorNelson N. Schwartz
Life of this patent
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Abstract
This invention is concerned with a novel rubber processing aid, as well as with the use of that aid for improving the processing of rubber. More specifically, the present invention is concerned with the formation of an amine salt of an aralkylsulfonic acid through the deposition of an amine and an aralkylsulfonic acid on a natural or synthetic clay base. This invention is further concerned with the use of said aralkylsulfonic salt composition, optionally modified with additives such as a thioether or a long chain fatty acid, for improving the processing of natural and synthetic rubber.
Claims13
An improved rubber processing aid comprising:
- (a) natural or synthetic clay upon which is deposited
- (b) an amine of the general formula:
- R.sup.4 R.sup.5 R.sup.6 N
- wherein R.sup.4 is alkyl or hydroxyalkyl, of from 1 to about 20 carbon atoms;
- each of R.sup.5 and R.sup.6 is hydrogen, alkyl or hydroxyalkyl of from 1 to about 20 carbon atoms;
- and R.sup.4 and R.sup.5, when taken together, form a divalent alkylene or alkylenoxyalkylene radical containing up to about 7 carbon atoms, which when combined with .dbd.NR.sup.6, forms a cyclic amine having from 5 to 7 ring members;
- and
- (c) an aralkylsulfonic acid of the general formula:
- R.sub.x --R.sup.7 --(SO.sub.3 H).sub.m
- wherein R is an alkyl group of from 1 to 18 carbon atoms;
- R.sup.7 is an arylene group of from 6 to 14 carbon atoms;
- and each of x and m has a value of from 1 to 4 such that the sum of x and m has a value of from 2 to 5.
Dependencies are inferred from the claim text.