US4098971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organotin polymers and antifouling paints containing same
Assignee: Australian Government
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Filing: 1975-07-28
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Granted: 1978-07-04
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Expires: 1995-07-28
Abstract
Abstract Film-forming biocidal polymers useful in marine antifouling compositions selected from copolymers of ##STR1## and vinyl acetate, acrylic acid and acrylamide, copolymers having the structure: AND A GRAFT BLEND POLYMER OF ##STR2## and PVC in which polymer structures X is H or CH 3 , X' is H or CH 3 , Y is H, --COOSn(Bu) 3 or --COOSn(Pr) 3 and Z is --COOMe.
Inventors
- 👤 Arpad T. Phillip
- 👤 Gunter Bocksteiner
- 👤 Russel W. Pettis
- 👤 Geoffrey W. Glew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:23
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1637; C09D5/1643; A; A01; A01N; A01N55/00; A01N55/02; A01N55/04; C07; C07F; C07F7/00; C07F7/22; C07F7/2224; C08; C08F; C08F259/00; C08F259/02; C08F259/04; C08F30/00; C08F30/04; C08F8/00; C08F8/42; C09D5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A film-forming antifouling agent consisting essentially of an organotin containing copolymer, which is composed of: (a) a recurring organotin moiety consisting of: ##STR6## wherein R is a member selected from the class consisting of propyl and butyl; X is a member selected from the class consisting of hydrogen and methyl; (b) recurring units of at least one comonomer selected from the group consisting of vinyl acetate, acrylic acid and acrylamide.
Claim 2
Dependent Claim
70 words
A film-forming antifouling agent consisting essentially of an organotin containing copolymer, which is composed of: (a) a recurring organotin moiety consisting of: ##STR6## wherein R is a member selected from the class consisting of propyl and butyl; X is a member selected from the class consisting of hydrogen and methyl; (b) recurring units of at least one comonomer selected from the group consisting of vinyl acetate, acrylic acid and acrylamide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |