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US 7,879,955 B2Granted
Compositions including a polythioether
OwnerChandra B. Rao, John R. Gilmoreinventors
Life of this patent
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Abstract
Compositions, such as aerospace sealant, coating, and/or potting compositions are disclosed. The compositions include a polythioether and, in at least some cases, can be sprayable and fuel resistant even when substantially free of volatile organic compounds.
Claims13
A multi-component composition comprising:
- (a) a first component comprising an isocyanate-functional polythioether-polyurethane and/or polythiourethane;
- and
- (b) a second component comprising an amine/hydroxy-functional polythioether, the amine/hydroxy-functional polythioether having the structure:
- wherein
- each R21 is an independently selected C2-10 n-alkylene group,
- each R22 is an independently selected divalent linking group,
- each R23 is an independently selected divalent linking group,
- p is an integer from 2 to 6,
- m is a rational number ranging from 0 to 50, and
- n is an integer from 1 to 60
- X is O, S or a divalent amine moiety, and Y is an amine group containing moiety.
8 more elements
Dependencies are inferred from the claim text.