US3919133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanizable compositions and the vulcanized compositions obtained therefrom
Assignee: IFP Energies nouvelles
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Filing: 1974-03-27
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Granted: 1975-11-11
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Expires: 1994-03-27
Abstract
Abstract Vulcanizable compositions of increased resistance to tearing, which comprise (a) vulcanizable elastomer, (b) vulcanization ingredients and (c) a processing cross-linkable oil consisting at least partly of liquid polybutadiene of molecular weight lower than 20,000, whose microstructure comprises 40-60 % of 1,4-cis units, 40-60 % of 1,4-trans units and less than 5 % of 1,2-units, having a glass transition temperature lower than -90*C, said polybutadiene being obtained by polymerizing 1,3-butadiene in the presence of a pi -allyl nickel fluorocarboxylate in an aromatic hydrocarbon solvent.
Inventors
- 👤 Francois Dawans
- 👤 Jean-Pierre Durand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:50
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06; C08L; C08L21/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
134 words
A VULCANIZABLE COMPOSITION WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF (A) VULCANIZABLE ELASTOMER OF UP TO 80% BY WEIGHT NATURAL RUBBER, AND ONE OR MORE SYNTHETIC POLYMERS HAVING UNSATURATED HYDROCARBON STRUCTURE, (B) VULCANIZATION INGREDIENTS AND (C) HYDROCARBON OIL CONTAINING 25-100% BY WEIGHT OF POLYBUTADIENE LIQUID AT ROOM TEMPERATURE HAVING A MICROSTRUCTURE COMPRISING 40 - 60% OF 1,4 - CIS UNITS, 40 - 60% OF 1,4 - TRANS UNITS AND LESS THAN 5% OF 1,2 - UNITS, A GLASS TRANSITION TEMPERATURE LOWER THAN -90*C, A NUMBER AVERAGE MOLECULAR WEIGHT LOWER THAN 20,000 AND PREPARED BY POLYMERIZING 1,3 - BUTADIENE IN THE PRESENCE OF AT LEAST ONE $ - ALLYL NICKEL FLUOROCARBOXYLATE IN AN AROMATIC HYDROCARBON, THE AMOUNT OF THE POLYBUTADIENE LIQUID BEING ABOUT 3-20 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF VULCANIZABLE ELASTOMER.
Claim 2
Dependent Claim
134 words
A VULCANIZABLE COMPOSITION WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF (A) VULCANIZABLE ELASTOMER OF UP TO 80% BY WEIGHT NATURAL RUBBER, AND ONE OR MORE SYNTHETIC POLYMERS HAVING UNSATURATED HYDROCARBON STRUCTURE, (B) VULCANIZATION INGREDIENTS AND (C) HYDROCARBON OIL CONTAINING 25-100% BY WEIGHT OF POLYBUTADIENE LIQUID AT ROOM TEMPERATURE HAVING A MICROSTRUCTURE COMPRISING 40 - 60% OF 1,4 - CIS UNITS, 40 - 60% OF 1,4 - TRANS UNITS AND LESS THAN 5% OF 1,2 - UNITS, A GLASS TRANSITION TEMPERATURE LOWER THAN -90*C, A NUMBER AVERAGE MOLECULAR WEIGHT LOWER THAN 20,000 AND PREPARED BY POLYMERIZING 1,3 - BUTADIENE IN THE PRESENCE OF AT LEAST ONE $ - ALLYL NICKEL FLUOROCARBOXYLATE IN AN AROMATIC HYDROCARBON, THE AMOUNT OF THE POLYBUTADIENE LIQUID BEING ABOUT 3-20 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF VULCANIZABLE ELASTOMER.
Claim 3
Dependent Claim
51 words
A composition according to claim 1, wherein the vulcanizable elastomer consists essentially of at least one synthetic unsaturated polymer of high molecular weight selected from those obtained by homopolymerizing or copolymerizing at least one C4-C8 conjugated diolefin, one C5- C10 cyclic olefin, one C5- C12 cyclic diolefin and/or 1,5,9 - cyclododecatriene.
Claim 4
Dependent Claim
32 words
A composition according to claim 2, wherein the vulcanizable elastomer consists essentially of at least one synthetic unsaturated polymer selected from the polybutadienes, polypentenamers and copolymers of butadiene with styrene and/or acrylonitrile.
Claim 5
Dependent Claim
29 words
A composition according to claim 1, wherein the vulcanizable elastomer consists essentially of a mixture of natural rubber with at least one homopolymer or copolymer of 1,3 - butadiene.
Claim 6
Dependent Claim
27 words
A composition according to claim 1, wherein the liquid polybutadiene is obtained by polymerizing 1,3 - butadiene in the presence of pi -allyl nickel trifluoroacetate in benzene.
Claim 7
Dependent Claim
28 words
A composition according to claim 1, wherein the liquid polybutadiene is obtained by polymerizing 1,3 - butadiene in the presence of pi - crotyl nickel perfluoropropionate in toluene.
Claim 8
Dependent Claim
53 words
A composition according to claim 1, wherein the liquid polybutadiene has a number average molecular weight of from 1,000 to 5,000, a microstructure of 45 - 55% of 1,4 - cis units, 45 -55% of 1,4 - trans units and less than 3% of 1,2-units, and a glass transition temperature lower than -90*C.
Claim 9
Dependent Claim
17 words
A composition according to claim 1, wherein the hydrocarbon oil comprises 100% b.w. of the liquid polybutadiene.
Claim 10
Dependent Claim
26 words
A composition according to claim 1, wherein the liquid polybutadiene amounts to 3 - 20 parts by weight per 100 parts by weight of vulcanizable elastomer.
Claim 11
Dependent Claim
26 words
A composition according to claim 1, wherein sulfur and a vulcanization accelerator in a ratio of 1.5 - 3 b.w. are present among the vulcanization ingredients.
Claim 12
Dependent Claim
52 words
A process for manufacturing, from an elastomer of up to 80% natural rubber, and synthetic polymer, a vulcanized composition having an improved resistance to tearing, said process comprising subjecting a calendered vulcanizable composition according to claim 1 to a temperature of 130* - 180* C and a pressure of 1 -100 bars.
Claim 13
Dependent Claim
31 words
A process according to claim 11, wherein said calendered vulcanizable composition is subjected to a temperature of about 150*C and a pressure of about 70 bars for at least 15 minutes.
Claim 14
Dependent Claim
15 words
A process according to claim 12, wherein the vulcanization time is 20 - 30 minutes.
Claim 15
Dependent Claim
17 words
A vulcanized composition of improved resistance to tearing, as obtained by vulcanizing the vulcanizable composition of claim
Claim 16
Dependent Claim
11 words
A vulcanized composition vulcanized according to the process of claim 11.
Claim 17
Dependent Claim
35 words
A composition according to claim 5 wherein said elastomer is 1,4-cis polybutadiene, and said hydrocarbon oil is said liquid polybutadiene, the weight ratio of the elastomer to the hydrocarbon oil being 100 to 15 respectively.
Claim 18
Dependent Claim
42 words
A composition according to claim 6, wherein said elastomer is 60% by weight natural rubber and 40% by weight 1,4-cis-polybutadiene, said hydrocarbon oil is said liquid polybutadiene, the weight ratio of the elastomer to the hydrocarbon oil being 100 to 15 respectively.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |