US4316969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cured novolak fiber-reinforced, chlorinated rubber molded articles having excellent flame-proofness, and process for the preparation thereof
Assignee: Gun Ei Chemical Industry Co Ltd
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Filing: 1979-07-02
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Granted: 1982-02-23
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Expires: 1999-07-02
Abstract
Abstract This invention relates to a cured novolak fiber-reinforced, chlorinated rubber molded article having excellent flameproofness, the main components of which are (A) fibers or a fibrous structure containing at least 50 weight % of cured novolak fibers and (B) a rubber composition consisting mainly of chlorinated rubber as a rubber component, the content of said fibers or fibrous structure being 2-80% by weight; and a process for the preparation of said article comprising adhering an organic solvent solution or dispersion of the rubber composition (B) to the fibers or the fibrous structure (A) or impregnating the fibers or fibrous structure with said solution or dispersion, or mixing the fibers with the rubber composition (B), and without any further processing, or during or after the pressing or molding, vulcanizing said chlorinated rubber composition at a temperature of 100°-200° C.
Inventors
- 👤 Hiroaki Koyama
- 👤 Shigeo Shimizu
- 👤 Mituru Sekiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:21
CPC Classifications
C; C08; C08L; C08L15/00; C08L15/02; C08J; C08J5/00; C08J5/04; C08J5/046; C08L23/00; C08L23/26; C08L23/28; C08L23/286; C08J2315/00; C08J2315/02; C08L2205/00; C08L2205/14; C08L2205/16; C08L2312/00; C08L63/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
76 words
A cured novolak fiber-reinforced, chlorine-containing rubber molded article, the main components of which are (A) fibers or a fibrous structure containing at least 50 weight % of cured novolak fibers and (B) a rubber composition consisting essentially of chlorine-containing rubber containing 15 to 50 weight % of chlorine as a rubber component, which is vulcanized with a non-sulfur vulcanizing agent, the content of said fibers or fibrous structure being 2-80% by weight of the molded article.
Claim 2
Dependent Claim
76 words
A cured novolak fiber-reinforced, chlorine-containing rubber molded article, the main components of which are (A) fibers or a fibrous structure containing at least 50 weight % of cured novolak fibers and (B) a rubber composition consisting essentially of chlorine-containing rubber containing 15 to 50 weight % of chlorine as a rubber component, which is vulcanized with a non-sulfur vulcanizing agent, the content of said fibers or fibrous structure being 2-80% by weight of the molded article.
Claim 3
Dependent Claim
25 words
A molded article as set forth in claim 1 in which said fibers or fibrous structure contains at least 70 weight% of cured novolak fibers.
Claim 4
Dependent Claim
19 words
A molded article as set forth in claim 1 in which said fibrous structure comprises yarn, fabric, or paper.
Claim 5
Dependent Claim
23 words
A molded article as set forth in claim 1 in which said rubber composition contains at least 50 weight% of said chlorine-containing rubber.
Claim 6
Dependent Claim
23 words
A molded article as set forth in claim 1 in which said rubber composition contains at least 65 weight% of said chlorine-containing rubber.
Claim 7
Dependent Claim
24 words
A molded article as set forth in claim 1 in which said chlorine-containing rubber is vulcanized with an organic peroxide, metallic oxide or amine.
Claim 8
Dependent Claim
17 words
A molded article as set forth in claim 1 in which said chlorine-containing rubber is chlorinated polyethylene.
Claim 9
Dependent Claim
36 words
A molded article as set forth in claim 1 in which said cured novolak fibers are insoluble and infusible novolak fibers in which as-spun fibers obtained by melt-spinning novolak resin are treated with aldehyde and cured.
Claim 10
Dependent Claim
25 words
A molded article as set forth in claim 1 or 2 in which said fibers are fibers having a length of 1 to 20 mm.
Claim 11
Dependent Claim
25 words
A molded article as set forth in claim 1 in which the content of cured novolak fibers is 10-60% by weight of the molded article.
Claim 12
Dependent Claim
76 words
A process for preparing a cured novolak fiber-reinforced, chlorine-containing rubber article comprising contacting a rubber composition consisting essentially of a chlorine-containing rubber which contains 15-50 weight % of chlorine as a rubber component with fibers or a fibrous structure containing at least 50 weight % of cured novolak fibers, and pressing or molding the resultant composition before, during or after vulcanizing said chlorine-containing rubber composition with a non-sulfur vulcanizing agent at a temperature of 100°-200° C.
Claim 13
Dependent Claim
76 words
A process for preparing a cured novolak fiber-reinforced, chlorine-containing rubber article comprising contacting a rubber composition consisting essentially of a chlorine-containing rubber which contains 15-50 weight % of chlorine as a rubber component with fibers or a fibrous structure containing at least 50 weight % of cured novolak fibers, and pressing or molding the resultant composition before, during or after vulcanizing said chlorine-containing rubber composition with a non-sulfur vulcanizing agent at a temperature of 100°-200° C.
Claim 14
Dependent Claim
29 words
A process as set forth in claim 11, wherein said process comprises adhering an organic solvent solution or dispersion of said rubber composition to said fibers or fibrous structure.
Claim 15
Dependent Claim
29 words
A process as set forth in claim 11, wherein said process comprises impregnating said fibers or fibrous structure with an organic solvent solution or dispersion of said rubber composition.
Claim 16
Dependent Claim
29 words
A process as set forth in claim 11, wherein said process comprises mixing said fibers containing at least 50 weight % of cured novolak fibers with said rubber composition.
Claim 17
Dependent Claim
37 words
A process as set forth in claim 11 in which said rubber composition consisting essentially of a chlorine-containing rubber as a rubber component contains a vulcanizing agent consisting mainly of an organic peroxide, metallic oxide, or amine.
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) | 1985-02-22 | 1985-08-24 | 1986-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-22 | 1989-08-24 | 1990-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-22 | 1993-08-24 | 1994-02-23 | $7700.00 | Window Closed / Lapsed |