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US 2016/0257647 A1Published application
Polythiols with carbamate groups
AssigneeChevron Phillips Chemical Company LP
InventorsThomas A. Upshaw, Michael S. Matson
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Abstract
The present invention discloses polythiol compositions containing sulfur-containing compounds with carbamate groups, and to methods for producing such polythiol compositions. These polythiol compositions can be synthesized via the reaction of an isocyanate with an allyl ether alcohol, followed by thiolation with H2S, and these polythiol compositions are often used in formulations for adhesives, paints, and coatings.
Claims20
A polythiol composition comprising sulfur-containing compounds having formula (I):
- wherein:
- G1 is
- each R independently is a C3 to C15 hydrocarbon group;
- each R1 independently is a C1 to C30 hydrocarbon group;
- n is an integer greater than or equal to 2;
- and
- m is an integer from 0 to 6, wherein an average value of m in the composition is from greater than 0 to 3.
4 more elements
A process for producing a polythiol composition, the process comprising:
- (1) contacting a compound having the formula
- with a compound having the formula
- to form a reaction mixture comprising a polycarbamate;
- and
- (2) contacting the polycarbamate, H2S, and an optional phosphite compound to form the polythiol composition;
- wherein:
- a molar ratio of H2S to carbon-carbon double bonds of the polycarbamate is in a range from 2:1 to 500:1;
- and
- the polythiol composition comprises sulfur-containing compounds having formula (I):
- wherein:
- G1 is
- each R independently is a C3 to C15 hydrocarbon group;
- each R1 independently is a C1 to C30 hydrocarbon group;
- n is an integer greater than or equal to 2;
- and
- m is an integer from 0 to 6, wherein an average value of m in the composition is from greater than 0 to 3.
13 more elements
Dependencies are inferred from the claim text.