US4598141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of polyesters of improved dye affinity
Assignee: Evonik Operations GmbH
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Filing: 1985-03-01
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Granted: 1986-07-01
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Expires: 2005-03-01
Abstract
Abstract Process for the preparation of polyesters of improved dye affinity by reacting dicarboxylic acids or their reactive derivatives with a mixture of diols, consisting of a predominant amount of an alkylene glycol and 0.1 to 20 weight percent, based on the polyester, of a polyoxyalkylene ether of formula R.sup.1 CH.sub.2 O--(C.sub.2 H.sub.4 O--).sub.n (C.sub.3 H.sub.7 O--).sub.m CH 2 CHR 3 CH 2 --SO 3 X in which ##STR1## R 2 =CH 3 --, C 2 H 5 --, C 3 H 7 --, R 3 =H-- or CH 3 , X=H--, alkali or ammonium ion, n=0 to 100, m=0 to 50 and n+m is not less than 1, and polymers prepared therefrom.
Inventors
- 👤 Jurgen Fock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:05
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/91; C08G63/914; C08G63/918
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A process for the preparation of polyesters with improved dye affinity which comprises reacting a dicarboxylic acid with a mixture of diols, said mixture comprising a major portion of an alkylene glycol and from 0.1 to 20 weight percent, based on the polyester, of a polyalkylene ether having the formula: R.sup.1 CH.sub.2 O--(C.sub.2 H.sub.4 O--).sub.n (C.sub.3 H.sub.7 O--).sub.m CH.sub.2 CHR.sup.3 CH.sub.2 --SO.sub.3 X wherein ##STR5## wherein R 2 is CH 3 --, C 2 H 5 --, or C 3 H 7 --, R 3 is H-- or CH 3 , X is H--, alkali or ammonium ion, n is 0 to 100, m is 0 to 50, and n+m is not less than 1.
Claim 2
Dependent Claim
115 words
A process for the preparation of polyesters with improved dye affinity which comprises reacting a dicarboxylic acid with a mixture of diols, said mixture comprising a major portion of an alkylene glycol and from 0.1 to 20 weight percent, based on the polyester, of a polyalkylene ether having the formula: R.sup.1 CH.sub.2 O--(C.sub.2 H.sub.4 O--).sub.n (C.sub.3 H.sub.7 O--).sub.m CH.sub.2 CHR.sup.3 CH.sub.2 --SO.sub.3 X wherein ##STR5## wherein R 2 is CH 3 --, C 2 H 5 --, or C 3 H 7 --, R 3 is H-- or CH 3 , X is H--, alkali or ammonium ion, n is 0 to 100, m is 0 to 50, and n+m is not less than 1.
Claim 3
Dependent Claim
18 words
The process in claim 1 wherein the amount of polyoxyalkylene ether is from 1 to 8 weight percent.
Claim 4
Dependent Claim
110 words
A polyester having improved dye affinity prepared by reacting a dicarboxylic acid with a mixture of diols, said mixture comprising a major portion of an alkylene glycol and from 0.1 to 20 weight percent, based on the polyester, of a polyalkylene ether having the formula: R.sup.1 CH.sub.2 O--(C.sub.2 H.sub.4 O--).sub.n (C.sub.3 H.sub.7 O--).sub.m CH.sub.2 CHR.sup.3 CH.sub.2 --SO.sub.3 X wherein ##STR6## wherein R 2 is CH 3 --, C 2 H 5 --, or C 3 H 7 --, R 3 is H-- or CH 3 , X is H--, alkali or ammonium ion, n is 0 to 100, m is 0 to 50, and n+m is not less than 1.
Claim 5
Dependent Claim
110 words
A polyester having improved dye affinity prepared by reacting a dicarboxylic acid with a mixture of diols, said mixture comprising a major portion of an alkylene glycol and from 0.1 to 20 weight percent, based on the polyester, of a polyalkylene ether having the formula: R.sup.1 CH.sub.2 O--(C.sub.2 H.sub.4 O--).sub.n (C.sub.3 H.sub.7 O--).sub.m CH.sub.2 CHR.sup.3 CH.sub.2 --SO.sub.3 X wherein ##STR6## wherein R 2 is CH 3 --, C 2 H 5 --, or C 3 H 7 --, R 3 is H-- or CH 3 , X is H--, alkali or ammonium ion, n is 0 to 100, m is 0 to 50, and n+m is not less than 1.
Claim 6
Dependent Claim
18 words
The polyester of claim 3 wherein the amount of polyoxyalkylene ether is from 1 to 8 weight percent.
Claim 7
Dependent Claim
9 words
A fiber formed from the polyester of claim 3.
Claim 8
Dependent Claim
9 words
An article formed from the polyester of claim 3.
Claim 9
Dependent Claim
8 words
The polyester of claim 3 which is dyed.
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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |