Patent US4215026A successfully refreshed from Google Patents.
US4215026A
Expired / Lapsed
US
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Aqueous dispersion of a branched polyester
Assignee: BASF Corp
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Filing: 1979-01-02
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Granted: 1980-07-29
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Expires: 1999-01-02
Abstract
Abstract A polyester size composition for synthetic fibers useful in protecting the fibers from abrasion during the weaving process or to improve the adhesion to the fibers of conventional size compositions and especially useful with polyester fibers such as those based upon polyethylene terephthalate, comprises a branched water-dispersible polyester which is the reaction product of at least one polycarboxylic acid, at least one diol or polyglycol and an aromatic carboxylic acid containing a --SO 3 M grouping which is attached to the aromatic nucleus of said carboxylic acid through an aliphatic chain and ester linkage and wherein said linkage contains about 2 to about 8 carbon atoms.
Inventors
- 👤 Robert B. Login
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:29
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507; D06M15/5075; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
An aqueous dispersion of a branched water-dispersible polyester comprising water and the polycondensation reaction product of: (a) at least one polycarboxylic acid, anhydride or ester thereof, (b) at least one diol or polyglycol, and (c) an organic reactant, wherein said polyester is a branched water-dispersible polyester containing repeating carbonyl-oxy units wherein said units are an integral part of the polymer chain, said organic reactant containing an alkali metal salt of a sulfonic acid attached to an aromatic nucleus through an aliphatic or cycloaliphatic chain and ester linkage which is capable of rendering said polyester water-dispersible and which is present in the proportions of from about 5 mole percent to about 50 mole percent, based upon the sum of the theoretical mole percentages of the other carboxylic acid components of said polyester, wherein said organic reactant consists of the at least monofunctional reaction product of an aromatic polycarboxylic acid anhydride and an aliphatic or cycloaliphatic hydrocarbon hydroxysulfonic acid alkali metal salt.
Claim 2
Dependent Claim
160 words
An aqueous dispersion of a branched water-dispersible polyester comprising water and the polycondensation reaction product of: (a) at least one polycarboxylic acid, anhydride or ester thereof, (b) at least one diol or polyglycol, and (c) an organic reactant, wherein said polyester is a branched water-dispersible polyester containing repeating carbonyl-oxy units wherein said units are an integral part of the polymer chain, said organic reactant containing an alkali metal salt of a sulfonic acid attached to an aromatic nucleus through an aliphatic or cycloaliphatic chain and ester linkage which is capable of rendering said polyester water-dispersible and which is present in the proportions of from about 5 mole percent to about 50 mole percent, based upon the sum of the theoretical mole percentages of the other carboxylic acid components of said polyester, wherein said organic reactant consists of the at least monofunctional reaction product of an aromatic polycarboxylic acid anhydride and an aliphatic or cycloaliphatic hydrocarbon hydroxysulfonic acid alkali metal salt.
Claim 3
Dependent Claim
130 words
The aqueous dispersion of claim 1 wherein said polyester is a branched water-dispersible polyester which is the reaction product of (a) at least one polycarboxylic acid or polycarboxylic acid anhydride, (b) a diol or polyglycol or mixtures thereof consisting of a poly(ethylene glycol) having the formula: H(OCH.sub.2 CH.sub.2).sub.n OH or a poly(methylene glycol) having the formula: HO(CH.sub.2).sub.n OH wherein n is an integer of from 2 to about 10, and (c) at least one monofunctional reaction product of an aromatic carboxylic acid, having at least 2 carboxyl radicals or the anhydride or ester derivative thereof with an aliphatic or cycloaliphatic hydrocarbon hydroxysulfonic acid alkali metal salt wherein said alkali metal salt is attached to the nucleus of said aromatic carboxylic acid through an aliphatic or cycloaliphatic chain and ester linkage.
Claim 4
Dependent Claim
30 words
The aqueous dispersion of claim 2 wherein said hydroxysulfonic acid salt has the formula: HO-Q-SO.sub.3 M wherein Q is a bivalent hydrocarbon radical and M is an alkali metal ion.
Claim 5
Dependent Claim
24 words
The aqueous dispersion of claim 3 wherein said alkali metal is sodium and Q is aliphatic of about 2 to about 8 carbon atoms.
Claim 6
Dependent Claim
29 words
The aqueous dispersion of claim 4 wherein said aromatic polycarboxylic acid or anhydride is selected from the group consisting of trimellitic acid or anhydride and pyromellitic acid or anhydride.
Claim 7
Dependent Claim
53 words
The aqueous dispersion of claim 5 wherein said polycarboxylic acid comprises a mixture of isophthalic acid and azelaic acid, said hydroxysulfonic acid alkali metal salt comprises a salt selected from the group consisting of 2-hydroxyethanesulfonic acid, sodium salt; 2-hydroxy-1-propanesulfonic acid sodium salt; and 1-hydroxy-2-propane-sulfonic acid, sodium salt and said polyglycol comprises diethylene glycol.
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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) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |