US4855375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styrene terminated multifunctional oligomeric phenols as new thermosetting resins for composites
Assignee: Honeywell International Inc
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Filing: 1988-11-28
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Granted: 1989-08-08
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Expires: 2008-11-28
Abstract
Abstract Thermosetting resins which are essentially vinylbenzyl end-capped ethers of the oligomeric condensation products of certain dihydric phenols and formaldehyde are readily polymerized to give an extensively cross-linked polymer particularly useful in printed circuit boards and similar laminates. Effective cost reduction may be enjoyed by replacing up to 50% of the vinylbenzyl moieties by other groups, such as alkyl and benzyl groups, without destroying the usefulness of the resulting thermosetting resins. The vinylbenzyl ether product from bisphenol-A is especially recommended.
Inventors
- 👤 Joseph J. Zupancic
- 👤 Andrew M. Zweig
- 👤 James A. Wrezel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:16
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G8/36; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/225; C08G8/04; C08G8/08; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
159 words
A thermosetting resin which is a vinylbenzyl ether of the oligomeric condensation product of a dihydric phenoland formaldlehyde and with the formula: ##STR5## where the recurring unit Q has the structure, ##STR6## and n is an integer from 1 to 10; s is 0 or 1; each X is independently selected from the group consisting of CH 2 , C(CH 3 ) 2 , C(CF 3 ) 2 , S(O) 2 , and OC 6 H 4 O; each R 1 and nR 2 is independently selected from the group consisting of hydrogen, alkyl and alkoxy moieties containing 1 to 10 carbon atoms, phenyl and phenoxy; a and b are independently 0 or integers from 1 to 4; Z is C1 or Br; E is selected from the group consisting of the vinylbenzyl moiety, alkyl moieties containing 1 to 10 carbona toms, or benzyl, subject to the constraint that at least 50% of all E's are the vinylbenzyl moiety.
Claim 2
Dependent Claim
159 words
A thermosetting resin which is a vinylbenzyl ether of the oligomeric condensation product of a dihydric phenoland formaldlehyde and with the formula: ##STR5## where the recurring unit Q has the structure, ##STR6## and n is an integer from 1 to 10; s is 0 or 1; each X is independently selected from the group consisting of CH 2 , C(CH 3 ) 2 , C(CF 3 ) 2 , S(O) 2 , and OC 6 H 4 O; each R 1 and nR 2 is independently selected from the group consisting of hydrogen, alkyl and alkoxy moieties containing 1 to 10 carbon atoms, phenyl and phenoxy; a and b are independently 0 or integers from 1 to 4; Z is C1 or Br; E is selected from the group consisting of the vinylbenzyl moiety, alkyl moieties containing 1 to 10 carbona toms, or benzyl, subject to the constraint that at least 50% of all E's are the vinylbenzyl moiety.
Claim 3
Dependent Claim
24 words
The resin of claim 1 where each R 1 and R 2 is selected from the group consisting of hydrogen, methyl, and tert-butyl moieties.
Claim 4
Dependent Claim
14 words
The resin of claim 2 where all R 1 and R 2 are hydrogen.
Claim 5
Dependent Claim
14 words
The resin of claim 2 where all R 1 and R 2 are methyl.
Claim 6
Dependent Claim
17 words
The resin of claim 1 where s is 1 and X is C(CH 3 ) 2 .
Claim 7
Dependent Claim
22 words
The resin of claim 1 where Z is Br and each of a and b is an integer from 1 to 4.
Claim 8
Dependent Claim
18 words
The resin of claim 1 where E is primary alkyl moiety containing from 1 to 10 carbon atoms.
Claim 9
Dependent Claim
15 words
The resin of claim 7 where the alkyl moietty containsn 1 to 4 carbon atoms.
Claim 10
Dependent Claim
9 words
The resin of claim 1 where E is benzyl.
Claim 11
Dependent Claim
18 words
The resin of claim 1 where from 70 to 100% of the E mooieties are the vinylbenzyl moiety.
Claim 12
Dependent Claim
17 words
The resin of claim 10 where from 95 to 100% of the E moieties are vinylbenzyl moieties.
Claim 13
Dependent Claim
14 words
The resin of claim 1 where n is an integer from 1 to 6.
Claim 14
Dependent Claim
14 words
The resin of claim 1 where the number average of n is about 3.
References Cited (Backward Citations)
US4116936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |