US4238582A
Expired / Lapsed
US
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Hydrolysis-resistant copolyether-esteramides
Assignee: ATO Chimie SA
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Filing: 1979-07-05
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Granted: 1980-12-09
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Expires: 1999-07-05
Abstract
Abstract Hydrolysis-resistant copolyether-esteramides according to this invention are terminated, at one chain end, by a hydrocarbon radical and at the other chain end by a hydroxyl group. The sequential linear aliphatic copolyether-esteramides according to the invention are obtained by a polycondensation reaction of linear aliphatic dicarboxylic polyamide oligomers having a molecular weight comprised between 300 and 15,000, with ω-ω'-dihydroxyl polyoxyalkylene sequences having a molecular weight comprised between 100 and 6000 in the presence of a linear aliphatic monocarboxylic polyamide oligomer having a carboxyl group at one end of the macromolecular chain and a hydrocarbon radical at the other end thereof.
Inventors
- 👤 Gerard Deleens
- 👤 Bernard Guerin
- 👤 Claude Poulain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:33
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44; Y; Y10; Y10S; Y10S525/00; Y10S525/926; Y10S525/927
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
Hydrolysis-resistant sequential moldable and extrudable linear aliphatic copolyether-esteramides, wherein one chain end is constituted by a hydrocarbon radical while the other chain end is constituted by a hydroxyl group, said copolyether-esteramides being obtained by polycondensation of linear aliphatic polyamide sequences having a molecular weight comprised between 100 and 15,000, the chain ends of which are constituted by dicarboxyl groups and of ω-ω'dihydroxyl polyoxyalkylene sequences having a molecular weight comprised between 100 and 6000, in the presence of 0.2 to 15% of a linear aliphatic monocarboxylic polyamide having a molecular weight comprised between 300 and 15,000 and the chain end of which is constituted by a hydrocarbon radical.
Claim 2
Dependent Claim
107 words
Hydrolysis-resistant sequential moldable and extrudable linear aliphatic copolyether-esteramides, wherein one chain end is constituted by a hydrocarbon radical while the other chain end is constituted by a hydroxyl group, said copolyether-esteramides being obtained by polycondensation of linear aliphatic polyamide sequences having a molecular weight comprised between 100 and 15,000, the chain ends of which are constituted by dicarboxyl groups and of ω-ω'dihydroxyl polyoxyalkylene sequences having a molecular weight comprised between 100 and 6000, in the presence of 0.2 to 15% of a linear aliphatic monocarboxylic polyamide having a molecular weight comprised between 300 and 15,000 and the chain end of which is constituted by a hydrocarbon radical.
Claim 3
Dependent Claim
20 words
The copolyether-esteramides of claim 1, wherein said linear aliphatic polyamide sequences have a molecular weight comprised between 800 and 5000.
Claim 4
Dependent Claim
20 words
The copolyether-esteramides of claim 1, wherein said linear aliphatic monocarboxylic polyamide has a molecular weight comprised between 300 and 15,000.
Claim 5
Dependent Claim
19 words
The copolyether-esteramides of claim 1, wherein said ω-ω'-dihydroxyl polyoxyalkylene sequences have a molecular weight comprised between 400 and 3000.
Claim 6
Dependent Claim
62 words
The copolyether-esteramides of claim 1, wherein said monocarboxyl polyamide is a polyamide of the 6, 6-6, 6-10, 11 or 12 type having at one of its chain ends a COOH group and at its other chain end a hydrocarbon radical, said polyamide being obtained by reacting the related monomers in the presence of a monocarboxylic acid containing 2 to 24 carbon atoms.
Claim 7
Dependent Claim
39 words
The copolyether-esteramides of claim 1, wherein the dicarboxylic polyamide is obtained by reacting the polyamide monomers of the 6, 6-6, 6-10, 11 or 12 type in the presence of saturated linear aliphatic α-ω-diacid containing 4 to 24 carbon atoms.
Claim 8
Dependent Claim
33 words
The copolyether-esteramides of claim 1, wherein said polyalkylene glycol sequences are selected from the group comprising polyoxyethylene glycols, polyoxypropylene glycols, polyoxytetramethylene glycols, and mixtures of at least any two of these said glycols.
Claim 9
Dependent Claim
15 words
The copolyester-ester-amide of claim 1, wherein an orthotitonate catalyst is present during the polycondensation reaction.
Claim 10
Dependent Claim
28 words
The copolyester-ester-amide of claim 1 wherein the amount by weight of the polyoxyalkylene glycol with respect to the total weight of the constituents is between 1 and 85%.
Claim 11
Dependent Claim
24 words
The copolyester-ester-amide of claim 1, wherein the proportion by weight of monocarboxylic polyamide used with respect to the copolyether-ester-amide is between 0.5 and 10%.
Claim 12
Dependent Claim
14 words
The copolyether-ester-amide of claim 1, wherein 4-4' bis(α,α'-dimethylbenzyl)diphenylamine is present during the polycondensation reaction.
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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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |