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US 12,698,405 B2Granted
Amphiphilic siloxane-polyurethane fouling-release coatings
AssigneeNDSU Research Foundation
InventorsDean C. Webster, Jackson Benda
Life of this patent
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Abstract
The invention relates to a curable coating composition comprising at least one surface modifying amphiphilic additive and at least one amphiphilic siloxane-polyurethane coating composition. The invention also relates to methods of making and using the curable coating composition of the invention. The invention also relates to methods for reducing or preventing biofouling of a surface exposed to an aqueous environment comprising the use of the curable coating composition of the invention.
Claims17
A curable coating composition comprising:
- a) at least one surface modifying amphiphilic additive (SMAA), comprising the reaction product of:
- a1) at least one Si-H functional siloxane;
- and
- a2) at least one allyl-functional poly (ethylene glycol) methyl ether (allyl-functional mPEG);
- b) at least one polyisocyanate;
- c) at least one polyol;
- and
- d) at least one amphiphilic mPEG-polydimethylsiloxane (PDMS) isocyanate pre-polymer, comprising the reaction product of:
- d1 at least one polyisocyanate;
- d2) at least one monocarbinol-terminated PDMS;
- and
- d3) at least one poly (ethylene glycol) methyl ether (mPEG),
- wherein the at least one amphiphilic mPEG-PDMS isocyanate prepolymer, d), has an overall isocyanate to total hydroxyl equivalent ratio such that isocyanate is in excess, and wherein the SMAA, a), has the following structure:
- wherein:
- X is
- l ranges from 5 to 6;
- m ranges from 0 to 13;
- and
- n ranges from 2 to 18.
16 more elements
Dependencies are inferred from the claim text.