Claims
- 1. A antifouling paint for protecting marine surfaces, comprising in combination:
- (a) toxicant and
- (b) a film forming water insoluble, seawater erodible organotin free copolymer binder having recurring groups represented by the formula ##STR5## wherein X is H or CH.sub.3 ;
- R is a substantially non-bioactive, organosilyl moiety, and B is the residue of an ethylenically unsaturated monomer.
- 2. The paint of claim 1 wherein R is --SiR.sub.n R.sub.3-n or --Si(OR.sub.N R.sub.3-n).sub.3, where R' and R" are independently straight or branched chain alkyl C.sub.1 -C.sub.10, or phenyl, and n=0-3.
- 3. The paint of claim 1 in which said organosilyl acrylate is selected from tributylsilyl acrylate, triphenylsilyl acrylate, phenyldimethylsilyl acrylate, diphenylmethylsilyl acrylate, tri-isopropylsilyl acrylate, or trimethylsilyl acrylate and the corresponding methacrylates.
- 4. The paint of claim 1 wherein said organosilyl acrylate is trimethylsilyl acrylate or methacrylate.
- 5. The paint of claim 1 wherein said organosilyl acrylate is phenyldimethylsilyl acrylate or methacrylate.
- 6. The paint of claim 1 wherein said organosilyl acrylate is diphenylmethylsilyl acrylate or methacrylate.
- 7. The paint of claim 1 wherein the organosilyl moiety is present in an amount of 10 to 80 parts on a mole basis of the copolymer binder.
- 8. The paint of claim 7 where said amount is 25 to 40 parts.
- 9. The paint of claim 1 where the erosion rate of the paint film is at least 2 microns per month.
- 10. A method of protecting a marine surface comprising coating said marine surface with an antifouling paint of claim 1.
- 11. A substantially organotin free, water insoluble, seawater erodible film forming copolymer, said copolymer having recurring groups represented by the formula ##STR6## wherein B is the residue of an ethylenically unsaturated monomer,
- X is H or CH.sub.3, and
- R is an organosilyl moiety.
- 12. The copolymer of claim 11 wherein R is --SiR.sub.n R.sub.3-n or Si(OR.sub.n R.sub.3-n).sub.3 and R' and R" are independently a straight or branched chain alkyl C.sub.1 -C.sub.10, or phenyl, and n=0-3.
- 13. The copolymer of claim 11 which includes a tributylsilyl acrylate, triphenylsilyl acrylate, phenyldimethylsilyl acrylate, diphenylmethylsilyl acrylate, tri-isopropylsilyl acrylate, or trimethylsilyl acrylate or the methacrylates.
- 14. The copolymer of claim 11 which includes a trimethylsilyl acrylate or methacrylate.
- 15. The copolymer of claim 11 which includes a phenyldimethylsilyl acrylate or methacrylate.
- 16. The copolymer of claim 11 which includes a diphenylmethylsilyl acrylate or methacrylate.
- 17. The copolymer of claim 11 where the organosilyl moiety is present in an amount of 10 to 80 parts on a mole basis of the copolymer.
- 18. The copolymer of claim 11 where the organosilyl moiety is present in an amount of 25 to 40 parts on a mole basis of the copolymer.
- 19. The copolymer of claim 11 which has a hydrolysis rate of at least 5.times.10.sup.-4 meq. per hour.
CROSS-REFERRENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No. 619,167, filed Jan. 17, 1984, which is, in turn, a continuation-in-part of application Ser. No. 458,377, filed Jan. 17, 1983, and now abandoned.
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
619167 |
Jan 1984 |
|
Parent |
458377 |
Jan 1983 |
|