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US 7,622,548 B2Granted
Epoxy- or amine/hydroxy-capped polythioethers
AssigneePRC-DeSoto International, Inc.
InventorsChandra B. Rao, John R. Gilmore
Life of this patent
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Abstract
Epoxy-capped polythioethers, amine/hydroxy-capped polythioethers, and curable compositions of epoxy-capped polythioethers are disclosed.
Claims4
An amine/hydroxy-capped polythioether having the structure:
- wherein
- each R21 independently denotes a C2-10 n-alkylene group;
- a C2-6 branched alkylene group;
- an alkyleneoxy group;
- a C6-8 cycloalkylene group;
- a C6-10 alkylcycloalkylene group;
- a heterocyclic group;
- or —[(—CHR3—)s—X—]q—(—CHR3—)r—, wherein s is an integer having a value ranging from 2 to 6, q is an integer having a value ranging from 1 to 5, r is an integer having a value ranging from 2 to 10, R3 is hydrogen or methyl, and X denotes O, S, or —NR2—, wherein R denotes an alkyl group;
- each R22 is independently a divalent linking group;
- p is an integer from 2 to 6;
- m is a rational number having a value ranging from 0 to 50;
- each R23 is a divalent linking group;
- n is an integer from 1 to 60;
- and
- Y is a primary amine group containing moiety comprising one or more aromatic rings.
12 more elements
Dependencies are inferred from the claim text.