US5204175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water absorptive fabric, and process of producing the same
Assignee: Sumitomo Riko Co Ltd
•
Filing: 1991-06-07
•
Granted: 1993-04-20
•
Expires: 2011-06-07
Abstract
Abstract A water absorptive fabric including a layer of a water absorptive polymer whose major components consist of a cross-linked poly(metal salt of acrylic acid) and a water-soluble resin. The fabric may be produced by first impregnating a fabric substrate with a solution which contains a metal salt of acrylic acid in the form of a monomer, a cross-linking agent and a water-soluble resin, and then heating the impregnated fabric substrate to thereby copolymerize the monomer and the cross-linking agent, in the presence of the water-soluble resin.
Inventors
- 👤 Masanari Umeda
- 👤 Yukio Sakuraba
- 👤 Hiroshi Baba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:40
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2484
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
45 words
A water absorptive fabric having sufficient flexibility to be formed about a communication cable which includes a layer of a water absorptive polymeric material formed by the in situ reaction of a metal salt of acrylic acid, a cross-linking agent and a water soluble resin.
Claim 2
Dependent Claim
45 words
A water absorptive fabric having sufficient flexibility to be formed about a communication cable which includes a layer of a water absorptive polymeric material formed by the in situ reaction of a metal salt of acrylic acid, a cross-linking agent and a water soluble resin.
Claim 3
Dependent Claim
47 words
A water absorptive fabric according to claim 1, wherein said polymeric material is produced by copolymerizing said metal salt of acrylic acid, and a cross-linking agent selected from the group consisting of: methylenebis acrylamide; trimethylolpropane triyacrylate; ethylene glycol diacrylate; polyethylene glycol diacrylate; neopentyl glycol diacrylate; tetramethylolmethane tetraacrylate.
Claim 4
Dependent Claim
39 words
A water absorptive fabric according to claim 1, wherein said water-soluble resin is selected from the group consisting of: sodium polyacrylate; polyethylene oxide; polyacrylamide; polyvinyl alcohol; water-soluble nylon; polyethyleneimide; polyvinyl pyrrolidone; and copolymer of vinyl pyrrolidone and vinyl acetate.
Claim 5
Dependent Claim
62 words
A process of producing a water absorptive fabric, comprising the steps of: impregnating a fabric substrate with a solution which contains a metal salt of acrylic acid in the form of a monomer, a cross-linking agent and a water-soluble resin; and heating the impregnated fabric substrate to thereby copolymerize said monomer and said cross-linking agent, in the presence of said water-soluble resin.
Claim 6
Dependent Claim
62 words
A process of producing a water absorptive fabric, comprising the steps of: impregnating a fabric substrate with a solution which contains a metal salt of acrylic acid in the form of a monomer, a cross-linking agent and a water-soluble resin; and heating the impregnated fabric substrate to thereby copolymerize said monomer and said cross-linking agent, in the presence of said water-soluble resin.
Claim 7
Dependent Claim
16 words
A process according to claim 4, wherein said metal salt of acrylic acid is sodium acrylate.
Claim 8
Dependent Claim
31 words
A process according to claim 4, wherein said cross-linking agent is selected from the group consisting of: methylenebis; trimethylolpropane triacrylate; ethylene glycol diacrylate; polyethylene glycol diacrylate; neopentyl glycol diacrylate; tetramethylolmethane tetraacrylate.
Claim 9
Dependent Claim
37 words
A process according to claim 4, wherein said water-soluble resin is selected from the group consisting of: sodium polyacrylate; polyethylene oxide; polyacrylamide; polyvinyl alcohol; water-soluble nylon; polyethyleneimide; polyvinyl pyrrolidone; and copolymer of vinyl pyrrolidone and vinyl acetate.
Claim 10
Dependent Claim
29 words
A process according to claim 4, wherein said solution further contains a copolymerizing catalyst as an initiator for copolymerizing said metal salt of acrylic acid and said cross-linking agent.
Claim 11
Dependent Claim
17 words
A process according to claim 8, wherein said copolymerizing catalyst consists of potassium persulfate or benzoyl peroxide.
Claim 12
Dependent Claim
19 words
A process according to claim 4, wherein said fabric substrate consists of a nonwoven fabric of a synthetic fiber.
Claim 13
Dependent Claim
19 words
A process according to claim 4, wherein said fabric substrate consists of a nonwoven fabric of a natural fiber.
Claim 14
Dependent Claim
30 words
A process according to claim 4, wherein said solution contains 1-50 parts by weight of said water-soluble resin per 100 parts by weight of said metal salt of acrylic acid.
References Cited (Backward Citations)
US4727097A
Cited
JPS63275616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |