US4121034A
Expired / Lapsed
US
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Biologically active triorganotin copolymers
Assignee: Arkema Inc
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Filing: 1977-06-13
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Granted: 1978-10-17
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Expires: 1997-06-13
Abstract
Abstract The undesirable swelling exhibited by biologically active copolymers wherein a portion of the repeating units exhibit a triorganotin moiety (R 3 SN--) is reduced by incorporation of a cross-linking agent into the copolymer. The physical and chemical properties of the cross-linked copolymers make them more suitable for use as biocides particularly antifouling toxicants, than polymers described in the prior art.
Inventors
- 👤 John R. Bednarski
- 👤 David B. Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:32
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; A; A01; A01N; A01N55/00; A01N55/02; A01N55/04; C08F230/00; C08F230/04; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1637; C09D5/1643
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
153 words
A biologically active copolymer obtained by reacting in the presence of a free radical polymerization initiator and a liquid hydrocarbon medium at least one solubilized triorganotin compound of the general formula ##STR3## with at least one solubilized copolymerizable monomer of the general formula ##STR4## and from 0.01 to 10%, based on total monomer weight, of a crosslinking agent selected from the group consisting of divinyl benzene, compounds of the formulae ##STR5## esters of acrylic or metharylic acid with polyfunctional alcohols and phenols, wherein said esters contain from 2 to 4 residues of said acid, and wherein each R 1 is individually selected from the group consisting of alkyl radicals containing from 1 to 8 carbon atoms, cycloalkyl and aryl radicals, R 2 and R 4 are individually selected from hydrogen and methyl radicals and R 3 represents an alkyl radical containing from 1 to 18 carbon atoms, a cyclohexyl or a phenyl radical.
Claim 2
Dependent Claim
153 words
A biologically active copolymer obtained by reacting in the presence of a free radical polymerization initiator and a liquid hydrocarbon medium at least one solubilized triorganotin compound of the general formula ##STR3## with at least one solubilized copolymerizable monomer of the general formula ##STR4## and from 0.01 to 10%, based on total monomer weight, of a crosslinking agent selected from the group consisting of divinyl benzene, compounds of the formulae ##STR5## esters of acrylic or metharylic acid with polyfunctional alcohols and phenols, wherein said esters contain from 2 to 4 residues of said acid, and wherein each R 1 is individually selected from the group consisting of alkyl radicals containing from 1 to 8 carbon atoms, cycloalkyl and aryl radicals, R 2 and R 4 are individually selected from hydrogen and methyl radicals and R 3 represents an alkyl radical containing from 1 to 18 carbon atoms, a cyclohexyl or a phenyl radical.
Claim 3
Dependent Claim
32 words
A biologically active copolymer as set forth in claim 1 wherein the polymerization medium consists essentially of at least one liquid aliphatic or cycloaliphatic hydrocarbon containing from 5 to 16 carbon atoms.
Claim 4
Dependent Claim
28 words
A biologically active copolymer as set forth in claim 2 wherein said medium consists essentially of at least one aliphatic hydrocarbon containing from 7 to 14 carbon atoms.
Claim 5
Dependent Claim
35 words
A biologically active copolymer as set forth in claim 3 wherein said medium contains from 50 to 100% by volume of said aliphatic hydrocarbon any remaining portion of said medium being a liquid aromatic hydrocarbon.
Claim 6
Dependent Claim
35 words
A biologically active polymer as set forth in claim 4 wherein said aliphatic hydrocarbon is heptane or a mixture of aliphatic hydrocarbons containing heptane as a major constituent and said liquid aromatic hydrocarbon is xylene.
Claim 7
Dependent Claim
25 words
A biologically active copolymer as set forth in claim 1 wherein said triogranotin compound constitutes from 10 to 90 mole % of the total monomers.
Claim 8
Dependent Claim
25 words
A biologically active copolymer as set forth in claim 6 wherein said triorganotin compound constitutes from 30 to 70 mole % of the total monomers.
Claim 9
Dependent Claim
26 words
A biologically active copolymer as set forth in claim 1 wherein the concentration of monomers is from 1.5 to 5 moles per liter of reaction mixture.
Claim 10
Dependent Claim
20 words
A biologically active copolymer as set forth in claim 8 wherein said concentration is greater than 2 moles per liter.
Claim 11
Dependent Claim
23 words
A biologically active copolymer as set forth in claim 1 wherein the reaction is conducted at a temperature from 70° to 85° C.
Claim 12
Dependent Claim
27 words
A biologically active copolymer as set forth in claim 1 wherein the concentration of polymerization initiator is from 0.001 to 0.01 mole %, based on total monomers.
Claim 13
Dependent Claim
26 words
A biologically active copolymer as set forth in claim 1 wherein said crosslinking agent is an ester of acrylic or methacrylic acid and a difunctional alcohol.
Claim 14
Dependent Claim
16 words
A biologically active copolymer as set forth in claim 12 wherein said difunctional alcohol is 1,3-butanediol.
Claim 15
Dependent Claim
27 words
A biologically active polymer as set forth in claim 1 wherein the concentration of said crosslinking agent is from 0.1 to 5%, based on total monomer weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |