US4889770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for the surface treatment of rubber
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1988-09-29
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Granted: 1989-12-26
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Expires: 2008-09-29
Abstract
Abstract A composition for the surface treatment of rubber is disclosed which comprises (A) a diorganopolysiloxane capped with a triorganosiloxy group at one end and a hydroxyl or alkoxy group at the other end; (B) at least one compound selected from organotrialkoxysilanes, organotriacyloxysilanes, organotrioximesilanes or tetraalkyl silicates; and (C) a condensation-reaction catalyst. The composition imparts durable release and lubrication properties to rubber bladders used in the manufacture of tires.
Inventors
- 👤 Isao Ona
- 👤 Tsutomu Naganawa
- 👤 Toshio Suzuki
- 👤 Tadashi Okawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:10
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C33/64; C; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/18; C09; C09D; C09D183/00; C09D183/04; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29L; B29L2030/00; Y; Y10; Y10S; Y10S528/00; Y10S528/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/31859; Y10T428/31938
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
107 words
A composition comprising: (A) 100 parts by weight of a diorganopolysiloxane having the general formula ##STR11## wherein R is a monovalent hydrocarbon group, R 1 is selected from the group consisting of hydrogen and an alkyl group having 1 to 6 carbon atoms and x is an integer having a value of 1 to 1,000; (B) from 0.1 to 30 parts by weight of at least one compound selected from the group consisting of organotrialkoxysilanes, organotriacyloxysilanes, organotrioximesilanes and tetraalkyl silicates; and (C) from 0.1 to 20 parts by weight of a condensation-reaction catalyst selected from the group consisting of amine catalyst lacking organosilicon catalysts and organometallic catalysts.
Claim 2
Dependent Claim
107 words
A composition comprising: (A) 100 parts by weight of a diorganopolysiloxane having the general formula ##STR11## wherein R is a monovalent hydrocarbon group, R 1 is selected from the group consisting of hydrogen and an alkyl group having 1 to 6 carbon atoms and x is an integer having a value of 1 to 1,000; (B) from 0.1 to 30 parts by weight of at least one compound selected from the group consisting of organotrialkoxysilanes, organotriacyloxysilanes, organotrioximesilanes and tetraalkyl silicates; and (C) from 0.1 to 20 parts by weight of a condensation-reaction catalyst selected from the group consisting of amine catalyst lacking organosilicon catalysts and organometallic catalysts.
Claim 3
Dependent Claim
48 words
The composition according to claim 1, wherein said component (B) is selected from the group consisting of alkyl silicates and organosilanes having the general formula YSiZ.sub.3 in which Y is a monovalent organic group and Z is selected from the group consisting of alkoxy, acyloxy and oxime groups.
Claim 4
Dependent Claim
16 words
The composition according to claim 2, wherein R of said diorganopolysiloxane (A) is a methyl radical.
Claim 5
Dependent Claim
32 words
The composition according to claim 3, wherein Y of said compound (B) is selected from the group consisting of aminopropyl, ethylaminopropyl, n-butylaminoethyl, cyclohexylaminopropyl, phenylaminoethyl, N-aminoethyl-gamma-aminopropyl, dimethylaminopropyl, glycidyloxypropyl, 3,4-epoxycyclohexylethyl, mercaptopropyl and methacryloxypropyl groups.
Claim 6
Dependent Claim
17 words
The composition according to claim 4, wherein R 1 is hydrogen and x is 10 to 500.
Claim 7
Dependent Claim
42 words
The composition according to claim 5, wherein from 1 to 10 parts by weight of said compound (B) and from 0.5 to 15 parts by weight of said catalyst (C) are employed for each 100 parts by weight of said diorganopolysiloxane (A).
Claim 8
Dependent Claim
12 words
The composition according to claim 6, wherein said compound (B) is N-aminoethyl-gamma-aminopropyltrimethoxysilane.
Claim 9
Dependent Claim
18 words
The composition according to claim 7, wherein said catalyst (C) is a tin salt of an organic acid.
Claim 10
Dependent Claim
11 words
The composition according to claim 1, further comprising an organic solvent.
Claim 11
Dependent Claim
11 words
The composition according to claim 2, further comprising an organic solvent.
Claim 12
Dependent Claim
11 words
The composition according to claim 4, further comprising an organic solvent.
Claim 13
Dependent Claim
11 words
The composition according to claim 5, further comprising an organic solvent.
Claim 14
Dependent Claim
9 words
An aqueous emulsion of the composition of claim 1.
Claim 15
Dependent Claim
9 words
An aqueous emulsion of the composition of claim 2.
Claim 16
Dependent Claim
9 words
An aqueous emulsion of the composition of claim 4.
Claim 17
Dependent Claim
9 words
An aqueous emulsion of the composition of claim 5.
Claim 18
Dependent Claim
10 words
A rubber substrate treated with the composition of claim 1.
Claim 19
Dependent Claim
10 words
A rubber substrate treated with the composition of claim 2.
Claim 20
Dependent Claim
10 words
A rubber substrate treated with the composition of claim 4.
Claim 21
Dependent Claim
10 words
A rubber substrate treated with the composition of claim 5.
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) | 1992-12-25 | 1993-06-26 | 1993-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-25 | 1997-06-26 | 1997-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-25 | 2001-06-26 | 2001-12-26 | $7700.00 | Window Closed / Lapsed |