US3607612A
Expired / Lapsed
US
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Saran ribbon for dry-cleanable textiles
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-06-24
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Granted: 1971-09-21
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Expires: 1989-06-24
Abstract
Abstract Flat extruded saran filaments are provided for use in textile fabrics which may be dry cleaned in perchloroethylene without providing excessive shrinkage of the saran. The saran composition from which the flat filaments are formed must contain no more than 5 percent by weight of extractable organic additives based on the total quantity of the saran copolymer and the additives. The organic additives constitute a stabilizing plasticizer which is an ester of fumaric acid, maleic acid, itaconic acid or aconitic acid, and a light stabilizer; in addition, no more than about 0.5 percent of a nonextractable, primarily inorganic phosphate stabilizer is also used. The composition contains an additional quantity of about 5 percent of branched polyethylene.
Inventors
- 👤 Robert L Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; C; C08; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/32; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/08; D01F6/00; D01F6/28; D01F6/32; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L51/00; C08L51/003; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/298
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
An extruded saran monofilament in accordance with claim 1 of rectangular cross section having a thickness of about 2 to 2.5 mils and a width of about 25-30 mils.
Claim 2
Dependent Claim
47 words
An extruded saran monofilament in accordance with claim 2 wherein said polyethylene is present in an amount of about 5 percent by weight, said polyethylene having a melt index of about 3.7, a density of about 0.923 and a melting point in the range of 230*-250* F.
Claim 3
Dependent Claim
24 words
An extruded saran monofilament in accordance with claim 2 wherein said organic stabilizing plasticizer is present in an amount of 0.0045 To 0.0075 moles.
Claim 4
Dependent Claim
37 words
An extruded saran monofilament in accordance with claim 2, wherein said organic stabilizing plasticizer is dioctyl fumarate and is present in an amount of about 2.5 percent by weight based on the composition exclusive of the polyethylene.
Claim 5
Dependent Claim
29 words
An extruded saran monofilament in accordance with claim 2, wherein said organic light stabilizer is 2,4-dibenzoylresorcinol or a 2-hydroxy-4-n-alkyloxybenzophenone, wherein the alkyl consists of up to 18 carbon atoms.
Claim 6
Dependent Claim
36 words
An extruded saran monofilament in accordance with claim 2, wherein said organic light stabilizer is 2-hydroxy-4-n-octyloxybenzophenone and is present in an amount of about 1.5 percent by weight based on the composition exclusive of the polyethylene.
Claim 7
Dependent Claim
42 words
An extruded saran monofilament in accordance with claim 2, wherein said perchloroethylene nonextractable, primarily inorganic stabilizer is disodium phosphate, sodium pentacapryl tripolyphosphate, sodium tripolyphosphate, tetrasodium pyrophosphate, sodium hexametaphosphate, sodium barium pyrophosphate, barium stearyl phosphate, barium lauryl phosphate, sodium metaphosphate or mixtures thereof.
Claim 8
Dependent Claim
148 words
An extruded saran monofilament in accordance with claim 2 wherein said perchloroethylene nonextractable, primarily inorganic stabilizer consists of a blend of about 88 percent by weight disodium phosphate and about 12 percent by weight of sodium pentacapryl tripolyphosphate, said blend being present in an amount of about 0.25 percent by weight based on the composition exclusive of the polyethylene. 10 An extruded saran monofilament in accordance with claim 2 comprising 95.75 percent by weight of said copolymer; 2.5 percent by weight of said organic stabilizing plasticizer which consists of dioctyl fumarate; 1.5 percent by weight of said organic light stabilizer which consists of 2-hydroxy-4-n-octyloxybenzophenone; 0.25 percent by weight of said perchloroethylene nonextractable, primarily inorganic stabilizer which consists of a blend of 88 percent by weight of disodium phosphate and 12 percent by weight of sodium pentacapryl tripolyphosphate; and an additional 5 percent by weight of said branched polyethylene.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |