US5717022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber composition, particularly for tire tread
Assignee: Rhein Chemie Rheinau GmbH
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Filing: 1996-09-06
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Granted: 1998-02-10
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Expires: 2016-09-06
Abstract
Abstract A rubber mixture, in particular for the tread of a tire, based on at least one polymer that is from the group of diene rubbers and respectively contains 5 to 100 parts by weight finely distributed, precipitated silicic acid, 0 to 80 parts by weight carbon black, if need be 0.2 to 10 parts by weight silane coupling agent, and 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance with regard to 100 parts by weight rubber. The viscosity-reducing, non-aromatic substance is based exclusively on the elements carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and a region of at least two chemically bonded carbon atoms, wherein neither the chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen.
Inventors
- 👤 Otto Beckmann
- 👤 Joachim Bertrand
- 👤 Reinhard Teves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:26
CPC Classifications
B; B60; B60C; B60C1/00; B60C1/0016; C; C08; C08L; C08L21/00; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08K5/10; C08K5/101; C08K5/103; C08K5/15; C08K5/151; C08K5/1535; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
124 words
A rubber mixture comprising: at least one polymer that comprises a diene rubber; 5 to 100 parts by weight finely distributed, precipitated silicic acid; 0 to 80 parts by weight carbon black; 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance, wherein the viscosity-reducing, non-aromatic substance consists of carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and has a region of at least two chemically bonded carbon atoms, wherein neither the two chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen; and wherein all parts by weight are based on 100 parts by weight of rubber in the mixture.
Claim 2
Dependent Claim
124 words
A rubber mixture comprising: at least one polymer that comprises a diene rubber; 5 to 100 parts by weight finely distributed, precipitated silicic acid; 0 to 80 parts by weight carbon black; 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance, wherein the viscosity-reducing, non-aromatic substance consists of carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and has a region of at least two chemically bonded carbon atoms, wherein neither the two chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen; and wherein all parts by weight are based on 100 parts by weight of rubber in the mixture.
Claim 3
Dependent Claim
17 words
The rubber mixture of claim 1, further comprising 0.2 to 10 parts by weight silane coupling agent.
Claim 4
Dependent Claim
16 words
The rubber mixture of claim 1, comprising 1 to 10 parts by weight of viscosity-reducing substance.
Claim 5
Dependent Claim
19 words
The rubber mixture of claim 1, wherein the oxygen atoms of the viscosity-reducing substance exist exclusively in hydroxyl groups.
Claim 6
Dependent Claim
28 words
The rubber mixture of claim 1, wherein the viscosity-reducing substance comprises at least one member selected from the group consisting of 1,2-pentanediol, 2-methyl-2-propyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 2-sec-butyl-2-methyl-1,3-propanediol, and trimethylolpropane (2-ethyl-2-hydroxymethyl-1,3-propanediol).
Claim 7
Dependent Claim
22 words
The rubber mixture of claim 1, wherein in addition to the hydroxyl groups, the viscosity-reducing substance contains an additional oxygen functional group.
Claim 8
Dependent Claim
30 words
The rubber mixture of claim 6, wherein the additional oxygen functional group comprises at least one member selected from the group consisting of ester, ether, acetal, and ketal functional groups.
Claim 9
Dependent Claim
62 words
The rubber mixture of claim 6, wherein the additional oxygen functional group forms a bridge between the region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and a region with at least two chemically bonded carbon atoms, wherein neither the chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen.
Claim 10
Dependent Claim
38 words
The rubber mixture of claim 8, wherein the region with at least two hydroxyl groups comprises a polyol selected from the group consisting of glycerine, trimethylolpropane, pentaerythrite, sugar alcohol, and vinyl alcohol with a molecular weight <600 g/mol.
Claim 11
Dependent Claim
31 words
The rubber mixture of claim 9, wherein the polyol comprises sugar alcohol, and wherein the sugar alcohol is selected from the group consisting of erythrite, xylite, sorbite, dulcite, mannite, and inosite.
Claim 12
Dependent Claim
24 words
The rubber mixture of claim 8, wherein the region with at least two hydroxyl groups includes polyols that contain at least one ether group.
Claim 13
Dependent Claim
51 words
The rubber mixture of claim 11, wherein the at least one ether group is selected from the group consisting of a poly-compound of glycerine, a poly-compound of pentaerythrite, a cyclical ether, a polyol which has a moderate ethoxylation, a sugar present in furan configuration, and a sugar present in pyran configuration.
Claim 14
Dependent Claim
25 words
The rubber mixture of claim 12, wherein the at least one ether group comprises poly-compound of glycerine, and wherein the poly-compound of glycerine is diglycerine.
Claim 15
Dependent Claim
25 words
The rubber mixture of claim 12, wherein the at least one ether group comprises poly-compound of pentaerythrite, and wherein the poly-compound of pentaerythrite is dipentaerythrite.
Claim 16
Dependent Claim
32 words
The rubber mixture of claim 12, wherein the at least one ether group comprises cyclical ether, and wherein the cyclical ether can be produced by removal of water from a sugar alcohol.
Claim 17
Dependent Claim
15 words
The rubber mixture of claim 15, wherein the cyclical ether comprises sorbitane derived from sorbite.
Claim 18
Dependent Claim
29 words
The rubber mixture of claim 12, wherein the at least one ether group comprises sugar present in furan configuration, and wherein the sugar present in furan configuration is saccharose.
Claim 19
Dependent Claim
27 words
The rubber mixture of claim 8, wherein the region with at least two hydroxyl groups is esterified with one or two fatty acid molecules via bridge oxygens.
Claim 20
Dependent Claim
44 words
The rubber mixture of claim 18, wherein the fatty acid is selected from the group consisting of octane acid, 2-ethylhexane acid, lauric acid, stearic acid, palmitic acid, oleic acid, linoleic acid, linolenic acid, ricinoleic acid, and a fatty acid component with alicyclic side chains.
Claim 21
Dependent Claim
25 words
The rubber mixture of claim 19, wherein the fatty acid comprises fatty acid component, and wherein the fatty acid component is a cyclopentenyl fatty acid.
Claim 22
Dependent Claim
26 words
The rubber mixture of claim 19, wherein the fatty acid comprises fatty acid component, and wherein the fatty acid component comprises a mixture of fatty acids.
Claim 23
Dependent Claim
18 words
The rubber mixture of claim 19, wherein the fatty acid comprises a mixture based on natural raw materials.
Claim 24
Dependent Claim
18 words
The rubber mixture of claim 22, wherein the natural raw materials are produced by splitting a fatty acid.
Claim 25
Dependent Claim
27 words
The rubber mixture of claim 23, wherein the fatty acid is selected from the group consisting of coconut oil acid, rapeseed oil acid, and soya oil acid.
Claim 26
Dependent Claim
32 words
The rubber mixture of claim 23, wherein the fatty acid comprises a fraction of a member selected from the group consisting of coconut oil acid, rapeseed oil acid, and soya oil acid.
Claim 27
Dependent Claim
15 words
The rubber mixture of claim 25, wherein the fraction comprises a low-molecular weight first-run acid.
Claim 28
Dependent Claim
23 words
The rubber mixture of 6, wherein the region of the viscosity-reducing substance containing at least two hydroxyl groups is etherified with an alcohol.
Claim 29
Dependent Claim
23 words
The rubber mixture of 6, wherein the region of the viscosity-reducing substance containing at least two hydroxyl groups is etherified with an alcohol.
Claim 30
Dependent Claim
18 words
The rubber mixture of claim 27, wherein the region containing at least two hydroxyl groups comprises a sugar.
Claim 31
Dependent Claim
13 words
The rubber mixture of claim 27, wherein the alcohol comprises a fatty alcohol.
Claim 32
Dependent Claim
24 words
The rubber mixture of claim 6, wherein the region of the viscosity-reducing substance containing at least two hydroxyl groups is acetalized with an aldehyde.
Claim 33
Dependent Claim
25 words
The rubber mixture of claim 30, wherein the aldehyde is butyral, and wherein the region containing at least two hydroxyl groups is approximately 30% acetalized.
Claim 34
Dependent Claim
137 words
A tire with a tread that is comprised at least partially of a vulcanized rubber mixture comprising: at least one polymer that comprises a diene rubber; 5 to 100 parts by weight finely distributed, precipitated silicic acid; 0 to 80 parts by weight carbon black; 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance, wherein the viscosity-reducing, non-aromatic substance consists of carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and has a region of at least two chemically bonded carbon atoms, wherein neither the two chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen; and wherein all parts by weight are based on 100 parts by weight of rubber in the mixture.
Claim 35
Dependent Claim
137 words
A tire with a tread that is comprised at least partially of a vulcanized rubber mixture comprising: at least one polymer that comprises a diene rubber; 5 to 100 parts by weight finely distributed, precipitated silicic acid; 0 to 80 parts by weight carbon black; 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance, wherein the viscosity-reducing, non-aromatic substance consists of carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and has a region of at least two chemically bonded carbon atoms, wherein neither the two chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen; and wherein all parts by weight are based on 100 parts by weight of rubber in the mixture.
References Cited (Backward Citations)
US2059448A
Cited
US2760632A
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US3445189A
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EP0314271A1
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JPH01110999A
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EP0447066A1
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EP0501227A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-09 | 2001-08-11 | 2002-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-09 | 2005-08-11 | 2006-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-09 | 2009-08-11 | 2010-02-10 | $7700.00 | Window Closed / Lapsed |