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US3910759A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of treating fabrics

Assignee: ISP Investments LLC
•
Filing: 1972-08-25
•
Granted: 1975-10-07
•
Expires: 1992-08-25
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Abstract

Abstract There is disclosed a process comprising treating textile materials containing thermoplastic fibers with an aqueous emulsion containing approximately by weight (I) 5 to 15% of a graft copolymer of a poly (N-vinyl lactam) of the formula: WHEREIN R represents an alkylene bridge group necessary to complete a 5,6 or 7-membered heterocyclic ring system, R'' represents either hydrogen or a methyl group, and n represents a number indicative of the extent of polymerization and is usually at least 3 or 4; having graft polymerized thereon at least one member selected from the group, consisting of C1 6 alkyl acrylates, acrylic acid and N-alkylol acrylamides and methacrylamides, (II) 0 to 3% of a crosslinking agent, (III) 0 to 5% of a cationic softener and (IV) 95 to 80% water; and thereafter subjecting the treated materials to curing conditions.

Inventors

  • 👤 Derwin K Sthare
  • 👤 William T Ledford

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 00:52
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/356; D06M15/3562; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/241

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 77 words
A PROCESS COMPRISING TREATING TEXTILE MATERIALS CONTAINING THERMOPLASTI FIBERS AT A TEMPERATURE BETWEEN ABOUT 50*F AND ABOUT 125*F WITH AN AQUEOUS EMULSION CONTAINING APPROXIMATELY BY WEIGHT (1) 5 TO 15 OF A GRAFT COPOLMER CONTAINING APPROXIMATELY BY WEIGHT 0.1 TO 10% N-METHYLOL ACRYAMIDE AND 50 TO 70% OF C1-6 ALKYL ACRYLATE GRAFT POLYMERIZED ON 20 TO 40% OF A POLY (N-VINYL LACTAM) HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 40 AND ABOUT 2,000,000 AND HAVING THE FORMULA
Claim 2
Dependent Claim 77 words
A PROCESS COMPRISING TREATING TEXTILE MATERIALS CONTAINING THERMOPLASTI FIBERS AT A TEMPERATURE BETWEEN ABOUT 50*F AND ABOUT 125*F WITH AN AQUEOUS EMULSION CONTAINING APPROXIMATELY BY WEIGHT (1) 5 TO 15 OF A GRAFT COPOLMER CONTAINING APPROXIMATELY BY WEIGHT 0.1 TO 10% N-METHYLOL ACRYAMIDE AND 50 TO 70% OF C1-6 ALKYL ACRYLATE GRAFT POLYMERIZED ON 20 TO 40% OF A POLY (N-VINYL LACTAM) HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 40 AND ABOUT 2,000,000 AND HAVING THE FORMULA
Claim 3
Dependent Claim 23 words
A process as defined in claim 1 wherein said treated materials contain 75-100% of said emulsion based on the weight of said materials.
Claim 4
Dependent Claim 30 words
A process as defined in claim 1 wherein the dry weight of said graft copolymer on said materials after cure is about 2 to 4% by weight of said materials.
Claim 5
Dependent Claim 21 words
A process as defined in claim 1 wherein said treatment is carried out at temperatures ranging from about 100* to 120*F.
Claim 6
Dependent Claim 29 words
A process as defined in claim 1 wherein said curing is carried out at a temperature ranging from about 250* to 350*F for about 30 seconds to 2 minutes.
Claim 7
Dependent Claim 27 words
A process as defined iN claim 1 wherein said C1 6 alkyl acrylate is selected from the group consisting of butyl acrylate and ethyl acrylate and hexyl.
Claim 8
Dependent Claim 23 words
A thermoplastic fiber-containing textile material normally susceptible to picking, snag and pull damage protected against such damage by treatment according to claim 1.
Claim 9
Dependent Claim 21 words
A material as defined in claim 7, selected from the group consisting of nylon, acrylics, polyester, cotton-polyester blends and rayon-polyester blends.

References Cited (Backward Citations)

US3166525A Cited
US3244658A Cited
US3402987A Cited
US3476581A Cited
US3483024A Cited
US3536650A Cited
US3749691A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-06 1979-04-07 1979-10-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-06 1983-04-07 1983-10-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-06 1987-04-07 1987-10-07 $7700.00 Window Closed / Lapsed

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