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US 9,260,567 B2Granted
Multifunctional sulfur-containing polymers, compositions thereof and methods of use
AssigneePRC-DeSoto International, Inc.
InventorsSteven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
Life of this patent
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Abstract
Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
Claims23
A terminal-modified sulfur-containing polymer comprising the reaction products of reactants comprising:
- (a) a sulfur-containing polymer of Formula (I);
- wherein:
- each n is an integer selected from 1 to 50;
- m is an integer selected from 3 to 6;
- each p is 1;
- each R1 is C2-6 alkanediyl;
- each R3 is hydrogen;
- and
- Z represents the core of an m-valent parent polyol Z(OH)m;
- and
- (b) a compound comprising:
- (i) a terminal isocyanate group, a terminal epoxy group, a terminal vinyl group, a terminal thiol group or a terminal amine group;
- and
- (ii) a group that is reactive with the hydroxyl groups of the sulfur-containing polymer of Formula (I).
11 more elements
A terminal-modified sulfur-containing polymer of Formula (II):
- wherein:
- each n is an integer selected from 1 to 50;
- m is an integer selected from 3 to 6;
- each p is 1;
- each R1 is C2-6 alkanediyl;
- each R3 is hydrogen;
- each R5 comprises a terminal thiol group, a terminal epoxy group, a terminal alkenyl group, a terminal isocyanate group, or a terminal amine group;
- and
- Z represents the core of an m-valent parent polyol Z(—OH)m.
6 more elements
Dependencies are inferred from the claim text.