US3708554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber composition
Assignee: Taoka Chemical Co Ltd
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Filing: 1970-02-18
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Granted: 1973-01-02
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Expires: 1990-02-18
Abstract
Abstract The tackiness of a terpolymer rubber of ethylene, propylene and a nonconjugated diene is remarkably improved by incorporating therein (1) an alkylphenol-formaldehyde resin, alkylphenolacetaldehyde resin, or alkylphenol-acetylene resin and (2) a thermoplastic resin produced by the polymerization of olefinic unsaturated hydrocarbons derived from the cracking of petroleum hydrocarbons, and containing substantially no aromatic hydrocarbons. This effect of the specific combination of two kinds of resin is synergetic. In addition to the improved tackiness, said rubber composition retains an excellent age resistance and a high capacity for loading fillers, both characteristics being inherent in said terpolymer rubber.
Inventors
- 👤 H Oguri
- 👤 H Nagasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:25
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08L61/00; C08L61/04; C08L61/06; C08L91/00; C08L2312/00; C08L2312/04; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
a component selected from the group consisting of an alkylphenol-formaldehyde resin, alkylphenol-acetaldehyde resin, and an alkylphenol-acetylene resin; and
Claim 2
Dependent Claim
25 words
A rubber composition according to claim 1, wherein the nonconjugated diene component of said terpolymer rubber is dicyclopentadiene, 1,4-hexadiene, methylene norbornene, ethylidene norbornene, or 1,5-cyclooctadiene.
Claim 3
Dependent Claim
85 words
a thermoplastic resin produced by the polymerization of a mixture of mono- and di-olefins having five or six carbon atoms and having a softening point of 70* to 110* C, a molecular weight of 500 to 2000 and a bromine value of 20 to 70, wherein the ratio by weight of component (2) to component (3) is from 1:9 to 9:1, and the total amount of components (2) and (3) is 20 parts by weight or less per 100 parts by weight of component (1).
Claim 4
Dependent Claim
35 words
A rubber composition according to claim 1, wherein the component (2) is a resin produced by reacting a phenol substituted by an alkyl group having one to 12 carbon atoms with formaldehyde, acetaldehyde, or acetylene.
Claim 5
Dependent Claim
22 words
A rubber composition according to claim 3, wherein the alkylphenol is m-cresol, m-isopropylphenol, p-tert.-butylphenol, p-tert.-octylphenol, p-nonylphenol, or p-n-dodecyclphenol, or a mixture thereof.
Claim 6
Dependent Claim
17 words
A rubber composition according to claim 1, which contains, in addition, ingredients generally used for rubber compounding.
Claim 7
Dependent Claim
33 words
A rubber composition according to claim 1, wherein the total amount of the components (2) and (3) is 5 to 15 parts by weight per 100 parts by weight of the component (1).
Claim 8
Dependent Claim
19 words
A rubber composition according to claim 1, wherein the component (2) is an alkylphenol-formaldehyde resin or an alkylphenol-acetylene resin.
Claim 9
Dependent Claim
15 words
A rubber composition according to claim 1, wherein the component (2) is an alkylphenol-acetaldehyde resin.
References Cited (Backward Citations)
US3070570A
Cited
US3299170A
Cited
US3366707A
Cited
US3514417A
Cited
US3402140A
Cited
US3334063A
Cited
US3354107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |