US4812588A
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Polyorganosiloxane-bridged bisbenzocyclobutene monomers
Assignee: Dow Chemical Co
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Filing: 1987-12-14
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Granted: 1989-03-14
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Expires: 2007-12-14
Abstract
Abstract Bisbenzocyclobutene monomers bridged by a polyorganosiloxane group. The monomers are liquid at room temperature.
Inventors
- 👤 Alan K. Schrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:57
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A bisbenzocyclobutene monomer represented by the formula: ##STR9## each R is independently alkyl of 1 to 6 carbon cycloalkyl, aralkyl, or phenyl: each R 1 is independently vinyl, allyl, or methallyl: each R 2 is independently alkyl of 1 to 6 carbon atoms, methoxy, or chloro; each R 3 is independently alkyl of 1 to 6 carbon atoms, chloro, or cyano: n is an integer of 1 or more; and each q and r is independently an integer of zero or 1.
Claim 2
Dependent Claim
82 words
A bisbenzocyclobutene monomer represented by the formula: ##STR9## each R is independently alkyl of 1 to 6 carbon cycloalkyl, aralkyl, or phenyl: each R 1 is independently vinyl, allyl, or methallyl: each R 2 is independently alkyl of 1 to 6 carbon atoms, methoxy, or chloro; each R 3 is independently alkyl of 1 to 6 carbon atoms, chloro, or cyano: n is an integer of 1 or more; and each q and r is independently an integer of zero or 1.
Claim 3
Dependent Claim
68 words
The bisbenzocyclobutene monomer of claim 1 represented by the formula: ##STR10## wherein each R is independently methyl, cycloalkyl, aralkyl, or phenyl; each R 1 is independently vinyl, allyl, or methallyl; each R 2 is independently methyl, methoxy, or each R 3 is independently methyl, chloro, or n is an integer between 1 and 4500, inclusive: and each q and r is independently an integer of zero or 1.
Claim 4
Dependent Claim
64 words
The bisbenzocyclobutene monomer of claim 2 represented by the formula: ##STR11## wherein each R is independently methyl, cycloalkyl, aralkyl, or phenyl; each R 1 is independently vinyl, allyl, or methallyl; each R 2 is independently methyl or chloro; R 3 is chloro; n is an integer between 1 and 4500, inclusive; and each q and r is independently an integer of zero or 1.
Claim 5
Dependent Claim
39 words
The bisbenzocyclobutene monomer of claim 3 represented by the formula: ##STR12## wherein each R is independently methyl, cycloalkyl, or phenyl; each R 1 is independently vinyl, allyl, or methallyl; and n is an integer between 1 and 10, inclusive.
Claim 6
Dependent Claim
24 words
The bisbenzocyclobutene monomer of claim 4 represented by the formula: ##STR13## wherein each R is independently methyl or phenyl, and n=1, 2, or 3.
Claim 7
Dependent Claim
11 words
The bisbenzocyclobutene monomer of claim 5 represented by the formula: ##STR14##
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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |