US4183844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric adhesion promoters for vulcanizable mixtures of elastomers and mineral fillers
Assignee: Huels AG
•
Filing: 1977-07-26
•
Granted: 1980-01-15
•
Expires: 1997-07-26
Abstract
Abstract Polybutadiene oils of 400-6,000 molecular weight, having double bonds which are 10 to 60% vinyl, 1 to 15% transvinylene and 25 to 85% cis-vinylene, and 3-20% by weight, corresponding to 0.4 to 3% by weight of bound silicon, of which are reactive silyl polymer units of the formula ##STR1## wherein X is a hydrolyzable group and Y and Z are the same as X or are H and/or alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl; are useful as adhesion promoters for vulcanizable elastomer compositions comprising a mineral filler.
Inventors
- 👤 Roland Streck
- 👤 Dieter Zerpner
- 👤 Horst Haag
- 👤 Karl-Heinz Nordsiek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:27
CPC Classifications
C; C08; C08L; C08L21/00; C08C; C08C19/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A polybutadiene oil of molecular weight 400-6,000, having double bonds which are 10 to 60% vinyl, 1 to 15% trans-vinylene and 25 to 85% cis-vinylene, and 3-20% by weight, corresponding to 0.4-3% by weight of bound silicon, of which is reactive silyl polymer units of the formula ##STR6## wherein X is halogen or alkoxy of up to 8 carbon atoms and Y and Z are X, H, alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or carbocyclic aryl of up to 10 carbon atoms.
Claim 2
Dependent Claim
86 words
A polybutadiene oil of molecular weight 400-6,000, having double bonds which are 10 to 60% vinyl, 1 to 15% trans-vinylene and 25 to 85% cis-vinylene, and 3-20% by weight, corresponding to 0.4-3% by weight of bound silicon, of which is reactive silyl polymer units of the formula ##STR6## wherein X is halogen or alkoxy of up to 8 carbon atoms and Y and Z are X, H, alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or carbocyclic aryl of up to 10 carbon atoms.
Claim 3
Dependent Claim
14 words
A polybutadiene oil of claim 1, of molecular weight of from 600 and 2,000.
Claim 4
Dependent Claim
24 words
A polybutadiene oil of claim 1, containing 4-17% of by weight of the reactive silyl groups, corresponding to 0.6-2.5% by weight of bound silicon.
Claim 5
Dependent Claim
11 words
A mineral filler impregnated with a polybutadiene oil of claim 1.
Claim 6
Dependent Claim
20 words
A vulcanizable composition comprising a vulcanizable elastomer, mineral filler and, as an adhesion promoter, a polybutadiene oil of claim 1.
Claim 7
Dependent Claim
27 words
A method of compounding a vulcanizable elastomer with a mineral filler and an adhesion promoter which comprises employing as adhesion promoter a polybutadiene oil of claim 1.
Claim 8
Dependent Claim
20 words
A method of claim 6, which comprises impregnating the filler with the polybutadiene oil prior to compounding with the elastomer.
Claim 9
Dependent Claim
16 words
The polybutadiene oil of claim 1, wherein X is alkoxy of up to 8 carbon atoms.
References Cited (Backward Citations)
US4105567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |