Patent US4877538A successfully refreshed from Google Patents.
US4877538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfomethylated stain blocking agents
Assignee: Crompton and Knowles Corp
•
Filing: 1988-04-04
•
Granted: 1989-10-31
•
Expires: 2008-04-04
Abstract
Abstract This invention relates to a new process and group of products that are useful in preventing nylon and wool fibers, including carpeting and upholstery, from being permanently stained. Fibers can be permanently stained by food colors contained in food spilled on the fiber. This new group of sulfomethylated phenol-formaldehyde or naphthol-formaldehyde and anionic surfactant compounds not only block the stain from the fiber but also minimize any yellowing or discoloration of the treated fibers during the application and during the subsequent exposure to sunlight or commonly used lightfastness testing equipment.
Inventors
- 👤 Alexander S. Kirjanov
- 👤 Michel A. Herlant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:23
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507; D06M15/5075; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2861; Y10T442/2893
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
23 words
A stain blocking composition comprising 1-50 parts a sulfomethylated phenol-formaldehyde or sulfomethylated naphthol-formaldehyde and an 1 part of an anionic surface active agent.
Claim 2
Dependent Claim
23 words
A stain blocking composition comprising 1-50 parts a sulfomethylated phenol-formaldehyde or sulfomethylated naphthol-formaldehyde and an 1 part of an anionic surface active agent.
Claim 3
Dependent Claim
26 words
The composition of claim 1, wherein the ratio range of the sulfomethylated phenol-formaldehyde or naphthol-formaldehyde condensates to the anionic surface active agents is 1:1 to 50:1.
Claim 4
Dependent Claim
64 words
The composition of claim 1, comprising sulfomethylated phenol-formaldehyde or naphthol-formaldehyde derivatives of the formula: [R].sub.n →CH.sub.2 SO.sub.3 M [I] Where R is a phenolic derivative such as naphthol, alkyl naphthol, thiodiphenol, alkyl thiodiphenol, phenol, alkylphenol, 4,4'-dihydroxydiphenyl sulfone, alkyl 4,2'-dihydroxydiphenyl sulfone, bisphenol `A`, alkylbisphenol `A` and n=1 to 6; and M is h, an alkali metal, --NH 4 or an amine (primary, secondary or tertiary).
Claim 5
Dependent Claim
61 words
The composition of claim 1, wherein the anionic surface active agent is: ##STR5## where at least one of the radicals, R and R', is an alkyl chain, branched or linear, with 4 to 18 carbons, where one of the radicals, R or R', may be H, and where M is H, or an alkali metal or NH 4 or an amine.
Claim 6
Dependent Claim
66 words
The composition of claim 1, wherein the anionic surface active agent is: [R]--SO.sub.3 .sup.- H.sup.+ [III] Where R may be an aliphatic branched or linear chain C n H 2n+1 where n =4 to 18, preferably 10 to 18 carbons or R may also be an alkyl-aryl branched or linear chain ##STR6## where R 1 is C n H 2n+1 , and where n=4 to 18.
Claim 7
Dependent Claim
43 words
The composition of claim 1, wherein the anionic surface active agent is an alkyl-aryl sulfonate of the following formula: ##STR7## where R=alkyl chain, branched or linear, with 4 to 18 carbons and M=H, or an alkali metal, or NH 4 or an amine.
Claim 8
Dependent Claim
21 words
The composition of claim 1, wherein the anionic surface active agent is a non-aromatic sulfonate including alcohol sulfates and alfa-olefin sulfonates.
Claim 9
Dependent Claim
23 words
The composition of claim 1 comprising 2 to 25% by weight of ethylene glycol, diethylene glycol, propylene glycol or esters of the above.
Claim 10
Dependent Claim
34 words
A process for preventing fibers from being permanently stained comprising applying to the fibers stain blocking composition including the addition of an anionic surface active agent to a sulfomethylated phenol-formaldehyde or sulfomethylated naphthol-formaldehyde condensate.
Claim 11
Dependent Claim
34 words
A process for preventing fibers from being permanently stained comprising applying to the fibers stain blocking composition including the addition of an anionic surface active agent to a sulfomethylated phenol-formaldehyde or sulfomethylated naphthol-formaldehyde condensate.
Claim 12
Dependent Claim
27 words
The process of claim 9, wherein the ratio range of the sulfomethylated phenol-formaldehyde or naphthol formaldehyde condensation to the anionic surface active agents is 1:1 to 50:1.
Claim 13
Dependent Claim
16 words
The process of claim 9, wherein the pH of the solution is no higher than 6.
Claim 14
Dependent Claim
12 words
The process of claim 9, wherein the fiber is a polyamide fiber.
Claim 15
Dependent Claim
62 words
The process of claim 9, wherein the sulfomethylated phenol-formaldehyde or napthol-formaldehyde are derivatives of the formula: [R].sub.n --CH.sub.2 SO.sub.3 M Where R is a phenolic derivative such as naphthol, alkylnaphthol,thiodiphenol, alkylthiodiphenol, phenol, alkylphenol, 4,4'-dihydroxydiphenyl sulfone, alkyl 4,2'-dihydroxydiphenyl sulfone, bisphenol `A`, alkylbisphenol `A` and n=1 to 6; and M is H, an alkali metal, --NH 4 or an amine (primary, secondary or tertiary).
Claim 16
Dependent Claim
61 words
The process of claim 9, wherein the anionic surface active agent is: ##STR8## where at least one of the radicals, R and R', is an alkyl chain, branched or linear, with 4 to 18 carbons, where one of the radicals, R or R', may be H and where M is H, or a alkali metal or NH 4 or a amine.
Claim 17
Dependent Claim
43 words
The process of claim 9, wherein the anionic surface active agent is an alkyl-aryl sulfonate of the following formula: ##STR9## where R=alkyl chain, branched or linear, with 4 to 18 carbons, and M=H, or an alkali metal, or NH 4 or an amine.
Claim 18
Dependent Claim
60 words
The process of claim 9, wherein the anionic surface active agent is: [R]--SO.sub.3 .sup.- H.sup.+ [III] Where R may be an aliphatic branched or linear chain C n H 2n+1 where n=4 to 18 or R may also be an alkyl-aryl branched or linear chain ##STR10## where R 1 is C n H 2n+1 , and where n=4 to 18.
Claim 19
Dependent Claim
21 words
The process of claim 9, wherein the anionic surface active agent is a non-aromatic sulfonates including alchohol sulfates and alfa-olefin sulfonates.
Claim 20
Dependent Claim
19 words
The process of claim 9 comprising the addition of 2-25 weight % of glycol or glycol ester type solvents.
Claim 21
Dependent Claim
26 words
The process of claim 9 comprising the addition of 2 to 25% by weight of ethylene glycol, diethylene glycol, propylene glycol or esters of the above.
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) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |