Siloxane-urethane foul release coatings
OwnerPaul J. Popa, Yanxiang Li +1inventors
InventorsPaul J. Popa, Yanxiang Li, Hongyu Chen
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Abstract
A two-part moisture curable coating compositions capable of forming polyurethane-polysiloxane networks is provided. The coating compositions which are useful in marine antifouling coatings provide a two-part moisture curable composition comprising: (a) a first part comprising at least one multifunctional polyol; (b) a second part comprising: (i) at least one polysiloxane polymer with at least two isocyanate or mercapto functional groups and (ii) at least one isocyanate functional organic compound; and (c) solvent. Also provided are methods of coating substrates with the curable composition and articles produced from such coated substrates.
Claims13
A two-part moisture curable composition comprising:
- (a) a first part comprising:
- (i) at least one multifunctional polyol and (ii) at least one polysiloxane polymer with at least two mercapto functional groups;
- (b) a second part comprising at least one isocyanate functional organic compound;
- and
- (c) solvent.
A method of coating a substrate comprising:
- (a) forming a two-part moisture curable composition comprising:
- (i) a first part comprising:
- (A) at least one multifunctional polyol and (B) at least one polysiloxane polymer with at least two mercapto functional groups;
- (ii) a second part comprising at least one isocyanate functional organic compound;
- and
- (iii) solvent;
- (b) optionally blending in one or more of pigments, dyes, gloss reducing additives, cure catalysts, flow and leveling agents, degassing additives, adhesion promoters, dispersion aids, flame-retardant agents, heat stabilizers, light stabilizers, antioxidants, plasticizers, antistatic agents, ultraviolet (UV) absorbers, lubricants or combinations thereof;
- (c) applying the composition of steps (a) and (b) to a substrate and curing the composition.
Dependencies are inferred from the claim text.