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Patent US4452853A successfully refreshed from Google Patents.
US4452853A
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Polyether esters for the cementing of textiles
Assignee: Dynamit Nobel AG
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Filing: 1982-08-05
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Granted: 1984-06-05
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Expires: 2002-08-05
Abstract
Abstract A polyether ester having a melting point of 95 DEG to 125 DEG C. based on 1,4-butanediol, terephthalic acid and isophthalic acid in a molar ratio of 48 to 55:52 to 45 and a content of 10.5 to 25 wt % of polyethylene glycol with a molar mass of 0.4 to 6 kg/mol is presented as a suitable fusion adhesive for textiles. The bonds prove to be resistant to hot water and perchloroethylene.
Inventors
- 👤 Gerhard Schade
- 👤 Peter Uckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:12
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C09; C09J; C09J167/00; C09J167/02; C09J167/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
Polyether ester for the cementing of textiles comprising terephthalic acid, isophthalic acid, 1,4-butanediol and a polyalkylene ether diol, having a melting point of 95° to 125° C. and a relative viscosity, measured at 25° C. on 1 g of polyether ester in 100 ml of a mixture of 60-wt-parts of phenol and 40 wt-parts of 1,1,2,2,-tetrachloroethane, from 1.85 to 2.20, wherein the molar ratio of terephthalic acid to isophthalic acid is 48 to 55:52 to 45 having a content of 10.5 to 25 wt % of polyalkylene ether diol with a molar mass of 0.4 to 6 kg/mol, relative to the weight sum of all the residues contained in the polyether ester.
Claim 2
Dependent Claim
112 words
Polyether ester for the cementing of textiles comprising terephthalic acid, isophthalic acid, 1,4-butanediol and a polyalkylene ether diol, having a melting point of 95° to 125° C. and a relative viscosity, measured at 25° C. on 1 g of polyether ester in 100 ml of a mixture of 60-wt-parts of phenol and 40 wt-parts of 1,1,2,2,-tetrachloroethane, from 1.85 to 2.20, wherein the molar ratio of terephthalic acid to isophthalic acid is 48 to 55:52 to 45 having a content of 10.5 to 25 wt % of polyalkylene ether diol with a molar mass of 0.4 to 6 kg/mol, relative to the weight sum of all the residues contained in the polyether ester.
Claim 3
Dependent Claim
15 words
Polyether ester as claimed in claim 1, wherein said polyalkylene ether diol is polyethylene glycol.
Claim 4
Dependent Claim
19 words
Polyether ester as claimed in claim 1, wherein said molar ratio of terephthalic acid to isophthalic acid is 50:50.
Claim 5
Dependent Claim
19 words
Polyether ester as claimed in claim 2, wherein the molar ratio of terephthalic acid to isophthalic acid is 50:50.
Claim 6
Dependent Claim
26 words
Polyether ester as claimed in claim 1, wherein up to 10% of the weight of said polyalkylene ether diol is comprised by di- and/or tri-ethylene glycol.
Claim 7
Dependent Claim
35 words
Polyether ester as claimed in claim 1, wherein up to 10% of the weight of said polyalkylene ether diol is comprised by an alkylene ether diol of lower molecular weight, the balance being polyethylene 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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |