US3669933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable dyeable polyester fibers having inherent oil stain release properties
Assignee: Monsanto Co
•
Filing: 1970-04-28
•
Granted: 1972-06-13
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Expires: 1990-04-28
Abstract
Abstract Thermally stable fiber-forming polyesters having inherent oilstain release properties and inherent disperse dye uptake are produced from dicarboxylic acids, or reactive derivatives thereof, glycols and small amounts of mixtures of compounds having a typical general formula: R-O(G-O)x-H; where R is an alkyl group containing an average of about 8-20 carbon atoms; G is a hydrocarbon radical selected from the group consisting of ethylene, propylene and isomers thereof, and mixtures of the above; and x has an average value at least equal to or greater than 9, no greater than about 20, and about equal to or greater than R.
Inventors
- 👤 Henry L King
- 👤 Eugene L Ringwald
- 👤 James C Randall Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:36
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; Y; Y10; Y10S; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
24 words
The composition of matter described in claim 1 wherein R is an alkyl group containing an average of 12 carbon atoms and x 20.
Claim 2
Dependent Claim
25 words
The new composition of matter described in claim 1 wherein R is an alkyl group containing an average of eight carbon atoms and x 12.
Claim 3
Dependent Claim
25 words
The new composition of matter described in claim 1 wherein R is an alkyl group containing an average of 14-15 carbon atoms and x 14.
Claim 4
Dependent Claim
22 words
The new composition of matter described in claim 1 wherein said additive is present in an amount of about 0.75-2.0 mole percent.
Claim 5
Dependent Claim
76 words
The new composition of matter described in claim 1 wherein the synthetic linear condensation poLyester is the polyester of terephthalic acid and ethylene glycol, and further modified with up to about 0.45 mole percent, based on the weight of the terephthalic acid, of a tetra-functional chain-branching agent selected from the group consisting of: (a compounds having the formula: R-(OH)4wherein R is an alkylene group containing from 3-6 carbon atoms; (b) aromatic tetra-functional acids or their esters.
Claim 6
Dependent Claim
15 words
The new composition of matter defined in claim 6 wherein the chain-branching agent is pentaerythritol.
Claim 7
Dependent Claim
106 words
The new composition of matter described in claim 1 wherein the synthetic linear condensation polyester is the polyester of terephthalic acid and ethylene glycol, modified with up to about 0.7 mole percent, based on the weight of the terephthalic acid, of a tri-functional chain-branching agent selected from the group consisting of: (a) compounds having the formula; R-(OH)3 wherein R is an alkylene group containing 3-6 carbon atoms; (b) compounds having the formula: R-(CH2OH)3 where R is an alkyl group containing from 2-6 carbon atoms; (c) compounds having the formula: wherein n is an integer from 1 to 6, and (d) aromatic tri-functional acids or their esters,
Claim 8
Dependent Claim
16 words
The new composition of matter defined in claim 8 wherein the chain-branching agent is trimesic acid.
Claim 9
Dependent Claim
31 words
The new composition of matter defined in claim 6 wherein the chain-branching agent is pentaerythritol, in an amount of about 0.2 mole percent, based on the weight of the terephthalic acid.
Claim 10
Dependent Claim
32 words
The new composition of matter defined in claim 8 wherein the chain-branching agent is trimesic acid in an amount of about 0.5 mole percent based on the weight of the terephthalic 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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |