US5310828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superior stain resistant compositions
Assignee: Peach State Labs Inc
•
Filing: 1991-10-28
•
Granted: 1994-05-10
•
Expires: 2011-10-28
Abstract
Abstract Novel polymeric compositions are provided for polyamide fibers or fibers having terminal amino groups that impart stain resistance and are resistant to discoloration.
Inventors
- 👤 Michael S. Williams
- 👤 Thomas H. Moss, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:11
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; C; C08; C08F; C08F290/00; C08F290/08; C08F290/14; C08F299/00; D06M15/37; D06M15/39; D06M15/41; D06M15/412; D06M15/564; D06M2101/00; D06M2101/16; D06M2101/30; D06M2101/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2861; Y10T442/2893; Y10T442/2902
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
144 words
An aromatic polymeric stain resistant composition wherein at least some of the aromatic moieties in the polymer are sulfonated and at least some of the aromatic moieties in the polymer contain free hydroxyl groups, prepared by: (i) allowing a hydroxyaromatic compound to react with a compound selected from the group consisting of an unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, unsaturated carboxylic acid chloride, unsaturated carboxylic acid precursor, saturated carboxylic acid, saturated carboxylic acid anhydride, saturated carboxylic acid chloride, saturated carboxylic acid precursor, saturated isocyanate and an unsaturated isocyanate; (ii) homopolymerizing or copolymerizing the ester formed in step (i) with an aldehyde in an aldehyde condensation reaction to form an aromatic condensation polymer; and then (iii) allowing the product of step (ii) to react with an acrylic acid, or α-substituted acrylic acid, or a mixture thereof in the presence of a free radical agent.
Claim 2
Dependent Claim
144 words
An aromatic polymeric stain resistant composition wherein at least some of the aromatic moieties in the polymer are sulfonated and at least some of the aromatic moieties in the polymer contain free hydroxyl groups, prepared by: (i) allowing a hydroxyaromatic compound to react with a compound selected from the group consisting of an unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, unsaturated carboxylic acid chloride, unsaturated carboxylic acid precursor, saturated carboxylic acid, saturated carboxylic acid anhydride, saturated carboxylic acid chloride, saturated carboxylic acid precursor, saturated isocyanate and an unsaturated isocyanate; (ii) homopolymerizing or copolymerizing the ester formed in step (i) with an aldehyde in an aldehyde condensation reaction to form an aromatic condensation polymer; and then (iii) allowing the product of step (ii) to react with an acrylic acid, or α-substituted acrylic acid, or a mixture thereof in the presence of a free radical agent.
Claim 3
Dependent Claim
39 words
The stain resistant composition of claim 1, wherein a ratio by weight of solids of approximately 1 part by weight sulfated hydroxyaromatic compound to between 0.5 and 2.5 parts acid, anhydride, or acid chloride is used in step (i).
Claim 4
Dependent Claim
35 words
The stain resistant composition of claim 1, wherein a ratio of approximately 1 part by weight of hydroxyaromatic compound to between 0.5 and 2 parts by weight of an aldehyde is used in step (ii).
Claim 5
Dependent Claim
41 words
The stain resistant composition of claim 1, wherein a ratio of 1 part by weight of condensation polymer to between 1 and 30 parts by weight of acrylic acid, α-substituted acrylic acid, or a mixture thereof, is used in step (iii).
Claim 6
Dependent Claim
39 words
The stain resistant composition of claim 1, wherein a ratio of 1 part of condensation polymer to between 1 and 5 parts by weight of acrylic acid, α-substituted acrylic acid, or a mixture thereof, is used in step (iii).
Claim 7
Dependent Claim
13 words
The stain resistant composition of claim 1, wherein the hydroxyaromatic is dihydroxydiphenyl sulfone.
Claim 8
Dependent Claim
17 words
The stain resistant composition of claim 1, wherein the hydroxyaromatic is allowed to react with acetic anhydride.
Claim 9
Dependent Claim
15 words
The stain resistant composition of claim 1, wherein the α-substituted acrylic acid is methacrylic acid.
Claim 10
Dependent Claim
17 words
The stain resistant composition of claim 1, wherein mixtures of hydroxyaromatic compounds are reacted with the aldehyde.
Claim 11
Dependent Claim
21 words
The stain resistant composition of claim 1, wherein an aromatic compound without hydroxyl groups is included in the aldehyde condensation reaction.
Claim 12
Dependent Claim
17 words
The stain resistant composition of claim 1, wherein the hydroxyaromatic is reacted with a saturated carboxylic acid.
Claim 13
Dependent Claim
17 words
The stain resistant composition of claim 1, wherein the hydroxyaromatic is reacted with an unsaturated carboxylic acid.
Claim 14
Dependent Claim
18 words
The stain resistant composition of claim 1, wherein mixtures of α-substituted acrylic acids are used in step (iii).
Claim 15
Dependent Claim
22 words
The stain resistant composition of claim 1, wherein acrylic acid is used in combination with an α-substituted acrylic acids in step (iii).
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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) | 1997-05-09 | 1997-11-08 | 1998-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-09 | 2001-11-08 | 2002-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-09 | 2005-11-08 | 2006-05-10 | $7700.00 | Window Closed / Lapsed |