US4480011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-corrosion and anti-fouling marine coatings
Assignee: IFP Energies nouvelles
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Filing: 1982-07-23
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Granted: 1984-10-30
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Expires: 2002-07-23
Abstract
Abstract Coating composition for protecting bodies immersed in sea water, comprising (a): a sub-layer of chlorinated natural rubber, and (b): an external layer comprising a polymer with amide groups. An intermediate layer can be provided, said layer consisting of a modified chlorinated natural rubber.
Inventors
- 👤 Jean-Pierre Durand
- 👤 Denise Nicolas
- 👤 Francois Dawans
- 👤 Ernest Mar/e/ chal
- 👤 Maryvonne Brigodiot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:34
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1693; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31725; Y10T428/3175; Y10T428/31826; Y10T428/3183
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
69 words
A coating composition, useful for protecting immersed bodies, which comprises: (a) at least one sub-layer, based on chlorinated natural rubber, in contact with the surface of the body to be coated; (b) an external layer comprising at least one polyamide; and (c) at least one intermediate layer consisting mainly of chlorinated natural rubber modified by grafting acrylic monomers thereon, or by attaching amino-acids, amino-esters, amino-amides, oligoamides or polyamides thereto.
Claim 2
Dependent Claim
69 words
A coating composition, useful for protecting immersed bodies, which comprises: (a) at least one sub-layer, based on chlorinated natural rubber, in contact with the surface of the body to be coated; (b) an external layer comprising at least one polyamide; and (c) at least one intermediate layer consisting mainly of chlorinated natural rubber modified by grafting acrylic monomers thereon, or by attaching amino-acids, amino-esters, amino-amides, oligoamides or polyamides thereto.
Claim 3
Dependent Claim
40 words
A coating composition according to claim 1, wherein said intermediate layer is a chlorinated natural rubber modified by grafting at least one acrylic monomer thereon, said monomer being an alkyl, hydroxyalkyl or dialkylaminoalkyl acrylate or methacrylate, or a vinylic amide.
Claim 4
Dependent Claim
28 words
A coating composition according to claim 1, wherein said intermediate layer is a chlorinated natural rubber modified by reaction with a polyamide or an oligoamide containing amine groups.
Claim 5
Dependent Claim
25 words
A coating composition according to claim 3, wherein said polyamide is a fatty polyamide obtained by reacting a diamine with a dimerized unsaturated fatty acid.
Claim 6
Dependent Claim
25 words
A coating composition according to claim 3, wherein said reaction is effected at 50°-100° C., in an aromatic hydrocarbon solvent or a chlorinated hydrocarbon solvent.
Claim 7
Dependent Claim
23 words
A coating composition according to claim 3, wherein the modification rate of said chlorinated natural rubber is from 5 to 30% by weight.
Claim 8
Dependent Claim
33 words
A coating composition according to claim 1, wherein said intermediate layer is a chlorinated natural rubber modified by reaction with a C 4 to C 12 amino-acid or a corresponding amino-ester or amino-amide.
Claim 9
Dependent Claim
31 words
A coating composition according to claim 7, wherein said chlorinated natural rubber is modified by reaction with a lower alkyl ester of a C 4 to C 12 aliphatic amino acid.
Claim 10
Dependent Claim
25 words
A coating composition according to claim 7, wherein said reaction is effected at 50°-100° C., in an aromatic hydrocarbon solvent or a chlorinated hydrocarbon solvent.
Claim 11
Dependent Claim
23 words
A coating composition according to claim 7, wherein the modification rate of said chlorinated natural rubber is from 5 to 30% by weight.
Claim 12
Dependent Claim
28 words
A coating composition according to claim 1, wherein the external layer comprises a polyamide soluble in an alcohol or a mixture of solvents containing at least one alcohol.
Claim 13
Dependent Claim
72 words
A coating composition according to claim 11, wherein said polyamide is a copolyamide 6/6.6 based on adipic acid/hexamethylene diamine and caprolactame, a copolyamide 6/6.6/6.10 based on adipic acid/hexamethylene diamine, decane dioic acid/hexamethylene diamine and caprolactame, a copolyamide of hexamethylene diamine/adipic acid, p,p'-diaminodicyclohexyl methane/adipic acid and caprolactame, a ternary copolyamide 6/6.6/12 of caprolactame, adipic acid/hexamethylene diamine and lauryl lactame or a ternary copolyamide 6/6.12/12 of caprolactame, dodecane dioic acid/hexamethylene diamine and lauryl lactame.
Claim 14
Dependent Claim
25 words
A coating composition according to claim 11, wherein said polyamide is a fatty polyamide obtained by reacting a diamine with a dimerized unsaturated fatty acid.
Claim 15
Dependent Claim
52 words
A coating composition, useful for protecting immersed bodies, which comprises: (a) at least one sub-layer, based on chlorinated natural rubber, in contact with the surface of the body to be coated; and (b) an external layer consisting mainly of modified chlorinated natural rubber containing 20-80% by weight of oligoamides, polyamides or aminoamides.
Claim 16
Dependent Claim
52 words
A coating composition, useful for protecting immersed bodies, which comprises: (a) at least one sub-layer, based on chlorinated natural rubber, in contact with the surface of the body to be coated; and (b) an external layer consisting mainly of modified chlorinated natural rubber containing 20-80% by weight of oligoamides, polyamides or aminoamides.
Claim 17
Dependent Claim
25 words
A coating composition according to claim 14, wherein said modified chlorinated natural rubber has a content of oligoamides, polyamides or amino-amides of 40 to 60%.
Claim 18
Dependent Claim
25 words
A coating composition according to claim 14, wherein said polyamide is a fatty polyamide obtained by reacting a diamine with a dimerized unsaturated fatty acid.
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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) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |