US3873489A
Expired / Lapsed
US
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Rubber compositions containing silica and an organosilane
Assignee: Evonik Operations GmbH
•
Filing: 1973-11-12
•
Granted: 1975-03-25
•
Expires: 1993-11-12
Abstract
Abstract Sulfur containing organosilicon compounds having the formula:
Inventors
- 👤 Friedrich Thurn
- 👤 Kurt Burmester
- 👤 Johannes Pochert
- 👤 Siegfried Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:08
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08; C08K; C08K5/00; C08K5/54; C08K5/548; 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; Y; Y10; Y10S; Y10S152/00; Y10S152/905; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
13 words
A COMPOSITION COMPRISING AN ORGANOSILANE HAVING THE FORMULA A-ALK-SN-ALK-Z, IN WHICH Z IS
Claim 2
Dependent Claim
13 words
A COMPOSITION COMPRISING AN ORGANOSILANE HAVING THE FORMULA A-ALK-SN-ALK-Z, IN WHICH Z IS
Claim 3
Dependent Claim
15 words
A composition according to claim 1 wherein n is a number of 3.0 to 4.0.
Claim 4
Dependent Claim
23 words
A composition according to claim 2 where Z is (3), R2 is ethoxy and alk is alkylene of 2 to 4 carbon atoms.
Claim 5
Dependent Claim
12 words
A composition according to claim 2 wherein the siliceous material is kaolin.
Claim 6
Dependent Claim
13 words
A composition according to claim 2 wherein the siliceous material is aluminum silicate.
Claim 7
Dependent Claim
12 words
A composition according to claim 2 wherein the polymer is butyl rubber.
Claim 8
Dependent Claim
14 words
A composition according to claim 2 wherein the polymer is ethylene-propylene non-conjugated polyene terpolymer.
Claim 9
Dependent Claim
18 words
A composition according to claim 2, wherein the siliceous filler is finely divided precipitated silica or pyrogenic silica.
Claim 10
Dependent Claim
20 words
A composition according to claim 2 wherein Alk is a saturated aliphatic hydrocarbon, unsaturated aliphatic hydrocarbon or cylcoaliphatic hydrocarbon group.
Claim 11
Dependent Claim
14 words
A composition according to claim 9 wherein Alk has 1 to 6 carbon atoms.
Claim 12
Dependent Claim
20 words
A composition according to claim 10 wherein Alk is a saturated aliphatic hydrocarbon group of 2 to 4 carbon atoms.
Claim 13
Dependent Claim
10 words
A composition according to claim 11 wherein Z is (3).
Claim 14
Dependent Claim
24 words
A composition according to claim 12 wherein Alk has 3 carbon atoms and all R2 groups are alkoxy of 1 to 4 carbon atoms.
Claim 15
Dependent Claim
26 words
A composition according to claim 12 wherein Alk is a saturated aliphatic hydrocarbon group of 2 to 3 carbon atoms and all R2 groups are ethoxy.
Claim 16
Dependent Claim
10 words
The product obtained by curing the composition of claim 2.
Claim 17
Dependent Claim
16 words
A composition according to claim 2 wherein the polymer is a polymer of a conjugated diene.
Claim 18
Dependent Claim
30 words
A composition according to claim 2 wherein the polymer is natural rubber, polybutadiene, polyisoprene, butadiene-styrene copolymer, butadiene-acrylonitrile copolymer, polychlorobutadiene, butyl rubber, chlorobutyl rubber, bromobutyl rubber or ethylene-propylene non-conjugated polyene terpolymer.
Claim 19
Dependent Claim
19 words
A composition according to claim 17 wherein the polymer is a sulfur curable polymer and the composition includes sulfur.
Claim 20
Dependent Claim
10 words
The product obtained by curing the composition of claim 18.
Claim 21
Dependent Claim
16 words
A composition accirding to claim 18 wherein the siliceous material is silica, kaolin or aluminum silicate.
Claim 22
Dependent Claim
13 words
A composition according to claim 20 wherein the organosilane compound comprises 3,3''-bis-(triethoxysilyl propyl)-tetrasulfide.
Claim 23
Dependent Claim
12 words
A composition according to claim 21 wherein the siliceous material is silica.
Claim 24
Dependent Claim
16 words
A composition according to claim 12 wherein the siliceous material is silica, kaolin or aluminum silicate.
Claim 25
Dependent Claim
12 words
A composition according to claim 23 wherein the siliceous material is silica.
Claim 26
Dependent Claim
14 words
A composition according to claim 24 wherein the silica is finely divided pyrogenic silica.
Claim 27
Dependent Claim
13 words
A composition according to claim 25 wherein the organosilane compound comprises 3,3-bis-(triethoxysilyl propyl)-tetreasulfide.
Claim 28
Dependent Claim
12 words
A composition according to claim 1 wherein the organosilane has the formula
Claim 29
Dependent Claim
37 words
A composition according to claim 27 including sulfur, accelerator and the curable rubbery polymer is at least one member of the group consisting of natural rubber, butadiene-styrene copolymer, cis-1,4-polyisoprene, butadiene-acrylonitrile copolymer, polybutadiene, polychlorobutadiene and ethylene-propylene-non-conjugated polyene terpolymer.
Claim 30
Dependent Claim
9 words
The product by curing the composition of claim 28.
Claim 31
Dependent Claim
12 words
A composition according to claim 2 including a rubber reinforcing carbon black.
Claim 32
Dependent Claim
16 words
A composition according to claim 30 including sulfur, accelerator, processing oil, light stabilizers and ozone stabilizer.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |