US4515852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather-like sheet material having low slip characteristics
Assignee: Kao Corp
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Filing: 1983-05-06
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Granted: 1985-05-07
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Expires: 2003-05-06
Abstract
Abstract A leather-like sheet material having low slip characteristics comprising: a sheet material having a fibrous substrate and a surface layer consisting of a polymer mainly composed of polyurethane elastomer, and an acryl-modified polyurethane resin spread on the said surface, whereby the sheet material has a remarkably high friction coefficient, and is adapted to balls, baseball gloves, bags, cases and the like which are required to prevent slipperiness.
Inventors
- 👤 Kenichi Katabe
- 👤 Takeo Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:23
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; D06N3/18; D06N3/183; Y; Y10; Y10S; Y10S273/00; Y10S273/08; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T442/00; Y10T442/20; Y10T442/2344
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
A leather-like sheet material having low slip characteristics comprising: sheet material having a fibrous substrate consisting of a fibrous mat, a surface layer consisting of a polymer mainly composed of a polyurethane elastomer, and an acryl-modified polyurethane resin spread on the surface layer, said acryl-modified polyurethane resin spread on the surface layer, said acryl-modified polyurethane resin being made by polymerization of an ethylenically unsaturated compound in the presence of a polyurethane emulsion.
Claim 2
Dependent Claim
72 words
A leather-like sheet material having low slip characteristics comprising: sheet material having a fibrous substrate consisting of a fibrous mat, a surface layer consisting of a polymer mainly composed of a polyurethane elastomer, and an acryl-modified polyurethane resin spread on the surface layer, said acryl-modified polyurethane resin spread on the surface layer, said acryl-modified polyurethane resin being made by polymerization of an ethylenically unsaturated compound in the presence of a polyurethane emulsion.
Claim 3
Dependent Claim
40 words
The leather-like sheet material according to claim 1, wherein the surface layer has a porous layer consisting of a polymer mainly composed of a polyurethane elastomer and a nonporous layer consisting of a polymer mainly composed of a polyurethane elastomer.
Claim 4
Dependent Claim
15 words
The leather-like sheet material according to claim 1, wherein the surface layer contains a colorant.
Claim 5
Dependent Claim
42 words
The leather-like sheet material according to claim 1, wherein the polyurethane elastomer constituting the surface layer has nitrogen atoms derived from isocyanate group of the organic polyisocyanate in an ambunt of 3 to 7 % by weight based on the polyurethane elastomer.
Claim 6
Dependent Claim
28 words
The leather-like sheet material according to claim 1, wherein the polymer mainly composed of a polyurethane. elastomer has a Young's modulus of 1.0 to 20 kg/mm 2 .
Claim 7
Dependent Claim
28 words
The leather-like sheet material according to claim 1, wherein the acryl-modified polyurethane is spread in an amount of 0.1 to 20 g/m 2 based on the solids content.
Claim 8
Dependent Claim
18 words
The leather-like sheet material according to claim 1, wherein the fibrous mat is impregnated with an elastic polymer.
Claim 9
Dependent Claim
40 words
The leather-like sheet material according to claim 7, wherein the surface layer has a porous layer consisting of a polymer mainly composed of a polyurethane elastomer and a non-porous layer consisting of a polymer mainly composed of a polyurethane elastomer.
References Cited (Backward Citations)
US3503935A
Cited
JPS5019901A
Cited
US3984607A
Cited
US4233359A
Cited
GB2026903A
Cited
JPS5643480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |