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US 12,466,977 B2Granted
Amphiphilic siloxane polyurethane coating compositions and methods of making and using thereof
AssigneeNDSU Research Foundation
InventorsDean C. Webster, Teluka Galhenage, Ryan Burgett
Life of this patent
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Abstract
The invention relates to a curable amphiphilic siloxane polyurethane coating composition. The invention also relates to methods of making and using the curable amphiphilic siloxane polyurethane 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 amphiphilic siloxane polyurethane coating composition of the invention.
Claims19
A curable amphiphilic siloxane polyurethane coating composition comprising:
- a) at least one pre-polymer selected from the group consisting of:
- a2) a pre-polymer comprising:
- a2.1) at least one hydrophilically modified polyisocyanate comprising the reaction product of:
- a2.1.1) a polyisocyanate based on hexamethylene diisocyanate (HMDI) modified with a polyethylene glycol (PEG) and at least one sulfobetaine group;
- and
- a2.1.2) at least one further PEG and/or at least one poly(dimethyl siloxane) (PDMS);
- a3) a pre-polymer comprising:
- a3.1) at least one hydrophilically modified polyisocyanate comprising the reaction product of:
- a3.1.1) a polyisocyanate based on HMDI modified with a PEG;
- and
- a3.1.2) at least one further PEG and/or at least one PDMS;
- a3.2) at least one further PEG;
- a3.3) at least one difunctional hydroxyalkyl terminated PDMS;
- and
- a3.4) a sulfobetaine-modified polyisocyanate comprising the reaction product of at least one sulfobetaine group and a polyisocyanate based on isophorone diisocyanate (IPDI), or a PEG-modified polyisocyanate comprising the reaction product of at least one PEG and IPDI;
- and
- a4) a pre-polymer comprising:
- a4.1) at least one hydrophilically modified polyisocyanate comprising the reaction product of:
- a4.1.1) a polyisocyanate based on HMDI modified with a PEG and at least one sulfobetaine group;
- and
- a4.1.2) at least one further PEG and/or at least one PDMS;
- a4.2) at least one further PEG;
- a4.3) at least one difunctional hydroxyalkyl terminated PDMS;
- and
- a4.4) a sulfobetaine-modified polyisocyanate comprising the reaction product of at least one sulfobetaine group and a polyisocyanate based on IPDI, or a PEG-modified polyisocyanate comprising the reaction product of at least one PEG and IPDI;
- b) at least one polyol;
- c) at least one polyisocyanate;
- d) at least one PEG modified siloxane amphiphilic additive;
- e) optionally, at least one catalyst;
- f) optionally, at least one solvent;
- and
- g) optionally, at least one pot-life extender.
29 more elements
Dependencies are inferred from the claim text.