US5015522A
Expired / Lapsed
US
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Multicomponent fibers, films and foams
Assignee: Dow Chemical Co
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Filing: 1990-09-05
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Granted: 1991-05-14
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Expires: 2010-09-05
Abstract
Abstract A multicomponent polymeric fiber, film or foam having at least one component comprising fire resistant carbonaceous material and another component comprising non-carbonaceous material.
Inventors
- 👤 Francis P. McCullough, Jr.
- 👤 R. Vernon Snelgrove
- 👤 David M. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/304; B32B5/18; B32B5/32; C; C08; C08J; C08J9/00; C08J9/36; D; D01; D01F; D01F8/00; D01F8/04; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4242; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2327/00; B32B2327/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2973; Y10T428/2975; Y10T428/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
23 words
A multicomponent polymeric fiber, film or foam having at least one component comprising fire resistant carbonaceous material and another component comprising non-carbonaceous material.
Claim 2
Dependent Claim
23 words
A multicomponent polymeric fiber, film or foam having at least one component comprising fire resistant carbonaceous material and another component comprising non-carbonaceous material.
Claim 3
Dependent Claim
41 words
The multicomponent polymeric fiber, film or foam wherein said carbonaceous material has a limiting oxygen index value of greater than 40, a char formation of greater than 65% and a thermal conductivity of less than 1 BTU ft/Hr ft 2 °F.
Claim 4
Dependent Claim
41 words
The multicomponent polymeric fiber, film or foam wherein said carbonaceous material has a limiting oxygen index value of greater than 40, a char formation of greater than 65% and a thermal conductivity of less than 1 BTU ft/Hr ft 2 °F.
Claim 5
Dependent Claim
43 words
The multicomponent polymeric fiber, film or foam of claim 1 comprising a fiber having a carbonaceous component and a non-carbonaceous component eccentrically disposed toward each other in distinct zones extending throughout the length of the fiber with adjoining surfaces in intimate adhering contact.
Claim 6
Dependent Claim
35 words
The multicomponent polymeric fiber, film or foam of claim 1, wherein said carbonaceous material is derived from an oxidation stabilized acrylic resin selected from the group consisting of the homopolymers, copolymers and terpolymers of acrylonitrile.
Claim 7
Dependent Claim
24 words
The multicomponent polymeric fiber, film or foam of claim 1 wherein said carbonaceous material has a nitrogen content of from 5 to 35 percent.
Claim 8
Dependent Claim
30 words
The multicomponent fibers, film or foam of claim 1 comprising nonlinear, resilient, shape reforming and elongatable fibers, having a sinusoidal configuration, and a reversible deflection ratio of greater than 1.2:1.
Claim 9
Dependent Claim
27 words
The multicomponent fibers, film or foam of claim 1 wherein at least one component comprises stabilized acrylic material selected from acrylonitrile homopolymers, acrylonitrile copolymers and acrylonitrile terpolymers.
Claim 10
Dependent Claim
33 words
The multicomponent fiber, film or foam of claim 1, wherein the carbonaceous fiber, film or foam are derived from a stabilized polymeric precursor material selected from polyacrylonitrile, polybenzimide, polyvinyl chloride and polyvinylidene chloride.
Claim 11
Dependent Claim
46 words
A multicomponent polymeric foam comprising a non-carbonaceous polymeric foam component and a non-graphitic carbonaceous foam component having an LOI value of greater than 40, a char formation of greater than about 65 percent, and a thermal conductivity of less than 1 BTU ft/Hr ft 2 °F.
Claim 12
Dependent Claim
46 words
A multicomponent polymeric foam comprising a non-carbonaceous polymeric foam component and a non-graphitic carbonaceous foam component having an LOI value of greater than 40, a char formation of greater than about 65 percent, and a thermal conductivity of less than 1 BTU ft/Hr ft 2 °F.
Claim 13
Dependent Claim
55 words
A multicomponent polymeric foam comprising at least one non-carbonaceous stabilized polymeric foam component and at least one fire resistant non-graphitic carbonaceous foam component on the surface, said carbonaceous foam component having an LOI value greater than 40, a char formation greater than 65% and a thermal conductivity less than 1 BTU ft/Hr ft 2 °F.
Claim 14
Dependent Claim
55 words
A multicomponent polymeric foam comprising at least one non-carbonaceous stabilized polymeric foam component and at least one fire resistant non-graphitic carbonaceous foam component on the surface, said carbonaceous foam component having an LOI value greater than 40, a char formation greater than 65% and a thermal conductivity less than 1 BTU ft/Hr ft 2 °F.
Claim 15
Dependent Claim
14 words
The multicomponent foam of claim 10, wherein said carbonaceous foam component is electrically conductive.
Claim 16
Dependent Claim
14 words
The multicomponent foam of claim 10 wherein said carbonaceous foam component is electrically non-conductive.
Claim 17
Dependent Claim
32 words
The multicomponent foam of claim 10 wherein said carbonaceous foam component is derived from an oxidation stabilized acrylic resin selected from the group consisting of the homopolymers, copolymers and terpolymers of acrylonitrile.
Claim 18
Dependent Claim
32 words
The multicomponent foam of claim 10, wherein said non-carbonaceous foam component is derived from an oxidation stabilized acrylic resin selected from the group consisting of the homopolymers, copolymers and terpolymers of acrylonitrile.
Claim 19
Dependent Claim
37 words
The multicomponent foam of claim 10 wherein the carbonaceous component and the non-carbonaceous component are eccentrically disposed toward each other in distinct zones extending throughout the length of the foam with adjoining surfaces in intimate adhering contact.
Claim 20
Dependent Claim
44 words
A multicomponent polymeric film comprising at least one non-carbonaceous component and at least one carbonaceous component, said carbonaceous component having an LOI value greater than 40, a char formation greater than 65% and a thermal conductivity less than 1 BTU ft/Hr ft 2 °F.
Claim 21
Dependent Claim
44 words
A multicomponent polymeric film comprising at least one non-carbonaceous component and at least one carbonaceous component, said carbonaceous component having an LOI value greater than 40, a char formation greater than 65% and a thermal conductivity less than 1 BTU ft/Hr ft 2 °F.
Claim 22
Dependent Claim
12 words
The multicomponent film of claim 16 wherein said non-carbonaceous component is stabilized.
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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |