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US 2004/0176504 A1Published application
Additive compound for curing halogenated polymers
AssigneeR.T. Vanderbilt Company, Inc.
InventorsThomas J. Karol, Francis S. Cheng, Ronald J. Tepper
Life of this patent
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Abstract
The present invention relates to 1,3,4-thiadiazole reaction products useful as accelerators and/or curing agents for halogenated polymers in rubber vulcanization processes, and to halogenated polymer compositions containing the thiadiazole derivatives, as well as a method of preparing the same. The additive is the reaction product of a 1,3,4-thiadiazole compound and a dithiocarbamic acid or an amine, or an isomer thereof.
Claims36
An additive which is a reaction product of a 1,3,4-thiadiazole of formula (I):
- 10
- wherein X is hydrogen or a C1-C20 alkyl group
- and a dithiocarbamic acid of formula (IIa):
- 11
- wherein R1 and R2 are independently a radical being either an alkyl, a cycloalkyl, an alkenyl, an aryl, an arylalkyl, or an alkylaryl, or R1 and R2 together form 3- to 8-membered heterocyclic ring structure which optionally contains an additional nitrogen or oxygen heteroatom and wherein the heterocyclic ring is optionally substituted with alkyl groups wherein the total number of carbon atoms from the heterocyclic ring alkyl groups is from 4 to 40,
- wherein the reaction product is produced by reacting the dithiocarbmanic acid of formula (IIa) with the 1,3,4-thiadiazole of formula (I) and the oxidizing agent is then added;
- or
- an isomer of said reaction product.
5 more elements
An additive which is a reaction product of a 1,3,4-thiadiazole of formula (I):
- 14
- wherein X is hydrogen or a C1-C20 alkyl group and an amine of formula (IIb):
- 15
- wherein R1 and R2 are independently a radical being either an alkyl, a cycloalkyl, an alkenyl, an aryl, an arylalkyl, or an alkylaryl, or R1 and R2 together form 3- to 8-membered heterocyclic ring structure which optionally contains an additional nitrogen or oxygen heteroatom and wherein the heterocyclic ring is optionally substituted with alkyl groups wherein the total number of carbon atoms from the heterocyclic ring alkyl groups is from 4 to 40,
- wherein the reaction product is produced by reacting the amine of formula (IIb) with the 1,3,4-thiadiazole of formula (I), and the oxidizing agent is then added;
- or an isomer of said reaction product.
3 more elements
Dependencies are inferred from the claim text.