US4396751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homo- and copolymers of 1,3-dienes containing reactive silyl groups, and their preparation and use
Assignee: Huels AG
•
Filing: 1981-06-15
•
Granted: 1983-08-02
•
Expires: 2001-06-15
Abstract
Abstract A homo- or copolymer of a 1,3-diene having reactive silyl groups bound thereto, and containing 0.4-12% by weight of bound silicon, prepared by reacting at a temperature of 150°-300° C., a 1,3-diene homo- or copolymer, having less than 1% of its aliphatic double bonds conjugated and having a molecular weight (M n ) of 400-8,000, with a silicon compound of the formula ##STR1## wherein R is an unsaturated aliphatic hydrocarbon residue of 2-20 carbon atoms, X is halogen, C 1-6 alkoxy, C 1-6 alkoxyalkoxy, C 6-12 aryloxy, C 1-8 alkanoyloxy, C 1-6 ketoximato or C 1-8 hydrocarbylamido, Y and Z independently are one of the X groups, hydrogen, alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl.
Inventors
- 👤 Wolfgang Kampf
- 👤 Roland Streck
- 👤 Horst G. Haag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:47
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/25; C08C19/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
A process for preparing a homo- or copolymer of a 1,3-diene carrying reactive silyl groups and having 0.4-12% by weight of bound silicon consisting essentially of, reacting of 1,3-diene homo- or copolymer having a molecular weight (Mn) of 400-8,000 and containing less than 1% of its aliphatic double bonds in conjugation, at a temperature of 150°-300° C., with a silicon compound of the formula ##STR6## wherein R is an unsaturated aliphatic hydrocarbon residue of 2-20 carbon atoms, X is halogen, C 1-6 alkoxy, C 1-6 alkoxyalkoxy, C 6-12 aryloxy, C 1-8 alkanoyloxy, C 1-6 ketoximato or C 1-12 hydrocarbylamido, Y and Z independently are one of the X groups, hydrogen, alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl.
Claim 2
Dependent Claim
124 words
A process for preparing a homo- or copolymer of a 1,3-diene carrying reactive silyl groups and having 0.4-12% by weight of bound silicon consisting essentially of, reacting of 1,3-diene homo- or copolymer having a molecular weight (Mn) of 400-8,000 and containing less than 1% of its aliphatic double bonds in conjugation, at a temperature of 150°-300° C., with a silicon compound of the formula ##STR6## wherein R is an unsaturated aliphatic hydrocarbon residue of 2-20 carbon atoms, X is halogen, C 1-6 alkoxy, C 1-6 alkoxyalkoxy, C 6-12 aryloxy, C 1-8 alkanoyloxy, C 1-6 ketoximato or C 1-12 hydrocarbylamido, Y and Z independently are one of the X groups, hydrogen, alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl.
Claim 3
Dependent Claim
12 words
A process of claim 1, wherein the reaction temperature is 200°-280° C.
Claim 4
Dependent Claim
20 words
A process of claim 1, wherein the starting diene polymer is a polybutadiene of a molecular weight (Mn) of 600-3,000.
Claim 5
Dependent Claim
15 words
A process of claim 1, wherein R in the silicon compound is vinyl or allyl.
Claim 6
Dependent Claim
15 words
A process of claim 4, wherein X in the silicon compound is halo or alkoxy.
Claim 7
Dependent Claim
18 words
A process of claim 4, wherein the bound silicon content is of the product is 1-5% by weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |