Patent US4948650A successfully refreshed from Google Patents.
US4948650A
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Stain-resistant textile substrates
Assignee: EIDP Inc
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Filing: 1989-10-26
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Granted: 1990-08-14
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Expires: 2009-10-26
Abstract
Abstract Stain-resistant substrates comprising sulfonated phenol-formaldehyde condensation products and polymers of ethylenically unsaturated monomers, polyamide textile substrates treated wtih the same, and processes for their preparation. The stain-ressitant compositions and substrates possess improved stain resistance but do not suffer from yellowing to the extent that previously known materials do.
Inventors
- 👤 Patrick H. Fitzgerald
- 👤 Nandakumar S. Rao
- 👤 Yashavant V. Vinod
- 👤 Jeffrey R. Alender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:40
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/227; D06M15/233; D06M15/37; D06M15/39; D06M15/41; D06M15/412; D06M2101/00; D06M2101/16; D06M2101/30; D06M2101/34; Y; Y10; Y10S; Y10S8/00; Y10S8/21; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31761; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2861; Y10T442/2893
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
83 words
A polyamide textile substrate having deposited thereon an amount effective to impart stain-resistance to polyamide textile substrates a composition comprising between about 95 and 30 weight % of a hydrolyzed polymer of maleic anhydride and one or more ethylenically unsaturated aromatic monomers and between about 5 weight % and 70 weight % of a sulfonated phenol-formaldehyde condensation product which is useful as a dye-resist agent, a dye-fixing agent, a dye-reserving agent, or an agent which improves the wet-fastness of dyeings on polyamide fibers.
Claim 2
Dependent Claim
83 words
A polyamide textile substrate having deposited thereon an amount effective to impart stain-resistance to polyamide textile substrates a composition comprising between about 95 and 30 weight % of a hydrolyzed polymer of maleic anhydride and one or more ethylenically unsaturated aromatic monomers and between about 5 weight % and 70 weight % of a sulfonated phenol-formaldehyde condensation product which is useful as a dye-resist agent, a dye-fixing agent, a dye-reserving agent, or an agent which improves the wet-fastness of dyeings on polyamide fibers.
Claim 3
Dependent Claim
80 words
The substrate of claim 1 wherein said ethylenically unsaturated aromatic monomer can be represented by the formula ##STR5## wherein R is ##STR6## or CH 2 ═CH--CH 2 --; R 1 is H--, CH 3 -- or ##STR7## R 2 is H-- or CH 3 --; R 3 is H-- or CH 3 O--; R 4 is H--, CH 3 --, [HO--] or ##STR8## and R 3 plus R 4 is [--CH 2 --O--CH 2 --O--CH 2 --] --O--CH 2 --O--.
Claim 4
Dependent Claim
38 words
The substrate of claim 2 wherein between about 10 to 25% of the polymer units of said condensation product contain SO 3 ( -- ) radicals and about 90 to 75% of the polymer units contain sulfone radicals.
Claim 5
Dependent Claim
33 words
The substrate of claim 3 containing between about 15 and 60 weight % of said condensation product and between about 85 and 40 weight % of said hydrolyzed ethylenically unsatured aromatic/maleic anhydride polymer.
Claim 6
Dependent Claim
47 words
The substrate of claim 4 wherein color-formers in said condensation product have been removed by dissolving it in aqueous base, acidifying the solution to form a slurry, heating the slurry so as to cause phase separation, recovering water-insoluble material and dissolving the water-insoluble material in aqueous base.
Claim 7
Dependent Claim
34 words
The substrate of claim 5 wherein said maleic anhydride polymer contains between about one and two polymer units derived from one or more ethylenically unsaturated aromatic monomers per polymer unit derived from maleic anhydride.
Claim 8
Dependent Claim
24 words
The substrate of claim 6 wherein said maleic anhydride polymer has a number average molecular weight in the range between about 500 and 4000.
Claim 9
Dependent Claim
21 words
The substrate of claim 7 wherein said maleic anhydride polymer has been hydrolyzed in the presence of an alkali metal hydroxide.
Claim 10
Dependent Claim
29 words
The substrate of claim 8 wherein said maleic anhydride polymer contains about one polymer unit derived from maleic anhydride per polymer unit derived from a ethylenically unsaturated aromatic monomer.
Claim 11
Dependent Claim
19 words
The substrate of claim 9 wherein said styrene/maleic anhydride polymer has been hydrolyzed in the presence of sodium hydroxide.
Claim 12
Dependent Claim
25 words
The substrate of claim 10 containing about 20 weight % of said condensation product and about 80 weight % of said hydrolyzed vinyl aromatic polymer.
Claim 13
Dependent Claim
25 words
The substrate of claim 10 containing about 50 weight % of said condensation product and about 50 weight % of said hydrolyzed vinyl aromatic polymer.
Claim 14
Dependent Claim
51 words
The substrate of claim 4 wherein a sufficient number of the free hydroxyl groups in said condensation product has been acylated or etherified so as to inhibit yellowing of said condensation product but insufficient so as to reduce materially its capacity to impart stain resistance to a synthetic polyamide textile substrate.
Claim 15
Dependent Claim
16 words
The substrate of any one of claims 1-13 wherein said ethylenically unsaturated aromatic monomer is styrene.
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) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |