US4822373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for providing polyamide materials with stain resistance with sulfonated novolak resin and polymethacrylic acd
Assignee: 3M Co
•
Filing: 1988-03-11
•
Granted: 1989-04-18
•
Expires: 2008-03-11
Abstract
Abstract A treated fibrous polyamide substrate having resistance to staining by acid colorants is provided. The treated substrate comprises a fibrous polyamide substrate having applied thereto (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
Inventors
- 👤 Maynard H. Olson
- 👤 John C. Chang
- 👤 Imelda A. Muggli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/41; D06M15/412; C; C09; C09D; C09D133/00; C09D133/02; D06M15/21; D06M15/263; C08; C08L; C08L61/00; C08L61/04; D06M2101/00; D06M2101/16; D06M2101/30; D06M2101/34; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2861; Y10T442/2893
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
46 words
A treated fibrous polyamide substrate having resistance to staining by acid colorants comprising a fibrous polyamide substrate having applied thereto (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
Claim 2
Dependent Claim
46 words
A treated fibrous polyamide substrate having resistance to staining by acid colorants comprising a fibrous polyamide substrate having applied thereto (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
Claim 3
Dependent Claim
25 words
The treated substrate of claim 1 wherein said sulfonated novolak resin comprises a sulfonated condensation product of at least one phenolic compound and an aldehyde.
Claim 4
Dependent Claim
21 words
The treated substrate of claim 2 wherein said phenolic compound is a bis(hydroxyphenyl) sulfone and said aldehyde is formaldehyde or acetaldehyde.
Claim 5
Dependent Claim
11 words
The treated substrate of claim 1 wherein (b) is polymethacrylic acid.
Claim 6
Dependent Claim
59 words
The treated substrate of claim 1 wherein copolymer is a copolymer of methacrylic acid and a comonomer which is a monocarboxylic acid, a polycarboxylic acid, an anhydride, a substituted or unsubstituted ester or amide of a carboxylic acid or anhydride, a nitrile, a vinyl monomer, a vinylidene monomer, a monoolefinic or polyolefinic monomer, a heterocyclic monomer, or combinations thereof.
Claim 7
Dependent Claim
27 words
The treated substrate of claim 5 wherein said comonomer is alkyl acrylate having 1 to 4 alkyl carbon atoms, itaconic acid, sodium sulfostyrene, or sulfated castor oil.
Claim 8
Dependent Claim
36 words
The treated substrate of claim 5 wherein said copolymer is a terpolymer of methacrylic acid, sodium sulfostyrene, and styrene; methacrylic acid, sulfated castor oil, and acrylic acid; or methacrylic acid, acrylic acid, and sulfated castor oil.
Claim 9
Dependent Claim
22 words
The treated substrate of claim 1 wherein methacrylic acid comprises about 30 to 100 weight percent of said copolymer of methacrylic acid.
Claim 10
Dependent Claim
36 words
The treated substrate of claim 1 wherein the lower 90 weight percent of said polymethacrylic acid and said copolymers of methacrylic acid have a weight average molecular weight in the range of about 2500 to 250,000.
Claim 11
Dependent Claim
35 words
The treated substrate of claim 1 wherein the lower 90 weight percent of said polymethacrylic acid and said copolymers-of methacrylic acid have a number average molecular weight in the range of about 500 to 20,000.
Claim 12
Dependent Claim
60 words
The treated substrate of claim 1 wherein said substrate is nylon 66 and said sulfonated novolak resin is present in an amount of about at least 0.01 weight percent and said polymethacrylic acid or said copolymers of methacrylic acid are present in an amount of at least about 0.06 weight percent based on the weight of the polyamide fibrous substrate.
Claim 13
Dependent Claim
57 words
The treated substrate of claim 1 wherein said substrate is nylon 6 and said sulfonated novolak resin is present in an amount of at least 0.03 weight percent and polymethacrylic acid or said copolymers of methacrylic acid are present in an amount of at least 0.125 weight percent based on the weight of the polyamide fibrous substrate.
Claim 14
Dependent Claim
19 words
The treated substrate of claim 1 wherein said treated substrate has a stain resistance rating of at least 5.
Claim 15
Independent Claim
51 words
A method for imparting to fibrous polyamide materials stain resistance to acid colorants comprising contacting the fibrous polyamide materials with an aqueous treating solution comprising (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
Claim 16
Independent Claim
51 words
A method for imparting to fibrous polyamide materials stain resistance to acid colorants comprising contacting the fibrous polyamide materials with an aqueous treating solution comprising (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
Claim 17
Independent Claim
52 words
A method for imparting to fibrous polyamide materials stain resistance to acid colorants comprising contacting the fibrous polyamide materials sequentially contacting said fibrous polyamide materials with an aqueous treating solution of a partially sulfonated novolak resin and an aqueous treating solution of a polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof.
Claim 18
Independent Claim
52 words
A method for imparting to fibrous polyamide materials stain resistance to acid colorants comprising contacting the fibrous polyamide materials sequentially contacting said fibrous polyamide materials with an aqueous treating solution of a partially sulfonated novolak resin and an aqueous treating solution of a polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof.
Claim 19
Dependent Claim
47 words
An aqueous solution useful in imparting stain resistance to acid colorants to fibrous polyamide materials, the solution comprising a mixture of (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
Claim 20
Dependent Claim
47 words
An aqueous solution useful in imparting stain resistance to acid colorants to fibrous polyamide materials, the solution comprising a mixture of (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinations of said polymethacrylic acid and said copolymers of methacrylic acid.
References Cited (Backward Citations)
US2205883A
Cited
US3408319A
Cited
US3961881A
Cited
US3994744A
Cited
US4081383A
Cited
US4203859A
Cited
US4334876A
Cited
US4388372A
Cited
US4526581A
Cited
US4592940A
Cited
US4501591A
Cited
US4579762A
Cited
EP0235980A1
Cited
EP0235989A1
Cited
US4699812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |