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US4798602A Expired / Lapsed US ⏱️ 0.0 years remaining

Disposable liquid-absorbent products

Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1986-03-04
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Granted: 1989-01-17
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Expires: 2006-03-04
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Abstract

Abstract The use in an absorbent product of a liquid impervious layer comprising an elastomeric film comprising an ethylene homopolymer and/or copolymer and an olefinic elastomer.

Inventors

  • 👤 Guy G. Laus

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 20:42
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/53409; A61F13/53418; A61F13/51; A61F13/514; A61F13/51456; A61F13/51464; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61L15/34; A61F13/15203; A61F13/15211; A61F13/51401; A61F2013/51409; A61F2013/51429; A61F2013/51431; A61F2013/51472; A61F2013/530481; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 198 words
A disposable liquid absorbent garment comprising in combination (a) a liquid impervious outer layer comprising a blend of (i) 25 to 55 parts by weight of Ethylene Propylene (EPM) or Ethylene Propylene Diene (EPDM) elastomer having an ethylene content of 45 to 80 weight percent; (ii) 35 to 55 parts by weight of a thermoplastic ethylene-vinyl acetate copolymer having a vinyl acetate content of 9 to 40% by weight; (iii) 5 to 25 parts by weight of a normally liquid hydrogen process oil, the oil being an aromatic, highly aromatic napthenic or paraffinic or extender oil; (iv) 0 to 30 parts by weight of calcium carbonate filler, and (v) 0 to 2% by weight, based on the total composition, of a film processing adherent; the blend composition containing at least 4.5% by weight vinyl acetate blend upon the total weight of the blend composition and the blend composition having a melt index at 190° C. (2.16 kg load) of 0.5 to 15 g/10 min.; (b) a liquid permeable liner; and (c) an intermediate absorbent layer having one side in contact with the liquid impervious outer layer and its opposite side in contact with the liquid permeable liquid liner.
Claim 2
Dependent Claim 198 words
A disposable liquid absorbent garment comprising in combination (a) a liquid impervious outer layer comprising a blend of (i) 25 to 55 parts by weight of Ethylene Propylene (EPM) or Ethylene Propylene Diene (EPDM) elastomer having an ethylene content of 45 to 80 weight percent; (ii) 35 to 55 parts by weight of a thermoplastic ethylene-vinyl acetate copolymer having a vinyl acetate content of 9 to 40% by weight; (iii) 5 to 25 parts by weight of a normally liquid hydrogen process oil, the oil being an aromatic, highly aromatic napthenic or paraffinic or extender oil; (iv) 0 to 30 parts by weight of calcium carbonate filler, and (v) 0 to 2% by weight, based on the total composition, of a film processing adherent; the blend composition containing at least 4.5% by weight vinyl acetate blend upon the total weight of the blend composition and the blend composition having a melt index at 190° C. (2.16 kg load) of 0.5 to 15 g/10 min.; (b) a liquid permeable liner; and (c) an intermediate absorbent layer having one side in contact with the liquid impervious outer layer and its opposite side in contact with the liquid permeable liquid liner.
Claim 3
Dependent Claim 28 words
A garment as claimed in claim 1, in which said ethylene/vinyl acetate copolymer has a melt index of from about 0.1 to about 10 g/10 mins (ASTM D1238E).
Claim 4
Dependent Claim 28 words
The product garment as claimed in claim 1, in which said elastomer has a Mooney viscosity [ML 1+8 at 127° C.] of from about 15 to about 80.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-01-17 1992-07-18 1993-01-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-01-17 1996-07-18 1997-01-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-01-17 2000-07-18 2001-01-17 $7700.00 Window Closed / Lapsed

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