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US 8,541,513 B2Granted
Terminal-modified difunctional sulfur-containing polymers, compositions thereof and methods of use
AssigneePRC-DeSoto International, Inc.
InventorsStephen J. Hobbs, Gregory J. McCollum, Lawrence G. Anderson, Renhe Lin
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Abstract
Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
Claims10
A terminal-modified sulfur-containing polymer comprising the reaction products of reactants comprising:
- (a) a sulfur-containing polymer of Formula (I):
- wherein:
- n is an integer selected from 2 to 50;
- each p is independently selected from 1 and 2;
- each R1 is independently selected from C2-6 alkanediyl;
- and
- each R2 is independently selected from hydrogen, C1-6 alkyl, C7-12 phenylalkyl, substituted C7-12 phenylalkyl, C6-12 cycloalkylalkyl, substituted C6-12 cycloalkylalkyl, C3-12 cycloalkyl, substituted C3-12 cycloalkyl, C6-12 aryl, and substituted C6-12 aryl;
- and
- (b) a compound comprising a terminal group selected from a vinyl group, a silyl group, an amine group, and an epoxy group;
- and a group that is reactive with the terminal hydroxyl groups of the polymer of Formula (I).
7 more elements
Dependencies are inferred from the claim text.