US4076550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcing additive
Assignee: Evonik Operations GmbH
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Filing: 1976-05-26
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Granted: 1978-02-28
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Expires: 1996-05-26
Abstract
Abstract Sulfur containing organosilicon compounds having the formula: Z - Alk - S.sub.n - Alk - Z in which Z is: ##STR1## where R 1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R 2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms or alkylmercapto of 1 to 8 carbon atoms, alk of a divalent aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon or a cyclic hydrocarbon containing 1 to 18 carbon atoms and n is a whole number from 2 to 6 are used as reinforcing additives in rubber mixtures containing a silica or silicate filler, and in a given case carbon black; the organosilane is coated on the surface of the silica or silicate filler particles.
Inventors
- 👤 Friedrich Thurn
- 👤 Kurt Burmester
- 👤 Johannes Pochert
- 👤 Siegfried Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:15
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; B; B82; B82Y; B82Y30/00; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/54; C08K9/00; C08K9/04; C08K9/06; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C09C1/3081; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64; C01P2004/80; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
99 words
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula Z -- alk -- S.sub.n -- alk -- Z, in which Z is ##STR7## wherein R 1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R 2 is alkoxy of 2 to 8 carbon atoms, cycloalkoxy with 5 to 8 carbon atoms or alkylmercapto with 1 to 8 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 6, and (b) 10 to 250 parts of a siliceous filler.
Claim 2
Dependent Claim
99 words
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula Z -- alk -- S.sub.n -- alk -- Z, in which Z is ##STR7## wherein R 1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R 2 is alkoxy of 2 to 8 carbon atoms, cycloalkoxy with 5 to 8 carbon atoms or alkylmercapto with 1 to 8 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 6, and (b) 10 to 250 parts of a siliceous filler.
Claim 3
Dependent Claim
57 words
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula ##STR8## wherein R 2 is alkoxy of 3 or 4 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 4, and (b) 10 to 250 parts of a siliceous filler.
Claim 4
Dependent Claim
57 words
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula ##STR8## wherein R 2 is alkoxy of 3 or 4 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 4, and (b) 10 to 250 parts of a siliceous filler.
Claim 5
Dependent Claim
15 words
A composition according to claim 2 where R 2 is alkoxy of 3 carbon atoms.
Claim 6
Dependent Claim
28 words
A composition according to claim 3 wherein alk is a saturated aliphatic hydrocarbon of 2 to 4 carbon atoms and n is a number of 2 to 4.
Claim 7
Dependent Claim
10 words
A composition according to claim 4 where n is 2.
Claim 8
Dependent Claim
15 words
A composition according to claim 2 where R 2 is alkoxy of 4 carbon atoms.
Claim 9
Dependent Claim
10 words
A composition according to claim 1 wherein Z is (1).
Claim 10
Dependent Claim
17 words
A composition according to claim 7 wherein R 2 is alkoxy of 2 to 8 carbon atoms.
Claim 11
Dependent Claim
10 words
A composition according to claim 1 wherein Z is (2).
Claim 12
Dependent Claim
17 words
A composition according to claim 9 wherein R 2 is alkoxy of 2 to 8 carbon atoms.
Claim 13
Dependent Claim
99 words
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula Z -- alk -- S.sub.n -- alk -- Z, in which Z is ##STR9## wherein R 1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R 2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy with 5 to 8 carbon atoms or alkylmercapto with 1 to 8 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 6 and (b) 10 to 250 parts of a siliceous filler.
Claim 14
Dependent Claim
99 words
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula Z -- alk -- S.sub.n -- alk -- Z, in which Z is ##STR9## wherein R 1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R 2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy with 5 to 8 carbon atoms or alkylmercapto with 1 to 8 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 6 and (b) 10 to 250 parts of a siliceous filler.
Claim 15
Dependent Claim
10 words
A composition according to claim 11 wherein Z is (1).
Claim 16
Dependent Claim
17 words
A composition according to claim 12 wherein R 2 is alkoxy of 1 to 8 carbon atoms.
Claim 17
Dependent Claim
10 words
A composition according to claim 11 wherein Z is (2).
Claim 18
Dependent Claim
17 words
A composition according to claim 14 where R 2 is alkoxy of 1 to 8 carbon atoms.
References Cited (Backward Citations)
US3768537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |