US4959433A
Expired / Lapsed
US
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Partially polymerized bis(allylic carbonate) monomer having high allylic utilization
Assignee: PPG Industries Inc
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Filing: 1987-03-12
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Granted: 1990-09-25
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Expires: 2007-03-12
Abstract
Abstract Polymerizable, liquid, substantially gel-free, partially polymerized monomer compositions having allylic utilizations greater than 50 percent can be prepared if the monomer which has been partially polymerized is bis(allylic carbonate) monomer of at least one 4,4'-(alkylidene)-bis[phenol], bis(allylic carbonate) monomer of at least one 4,4'-[phenylenebis(alkylidene)]bis [phenol], or a mixture thereof.
Inventors
- 👤 Stephanie J. Oates
- 👤 Edward J. Sare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:12
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
52 words
A polymerizable, liquid, substantially gel-free, partially polymerized monomer composition wherein (a) the monomer which has been partially polymerized is bis(allylic carbonate) monomer of at least one 4,4'-(alkylidene)bis[phenol], bis(allylic carbonate) monomer of at least one 4,4'-[phenylenebis(alkylidene)]-bis[phenol], or a mixture thereof, and (b) the allylic utilization of said composition is greater than 50 percent.
Claim 2
Dependent Claim
52 words
A polymerizable, liquid, substantially gel-free, partially polymerized monomer composition wherein (a) the monomer which has been partially polymerized is bis(allylic carbonate) monomer of at least one 4,4'-(alkylidene)bis[phenol], bis(allylic carbonate) monomer of at least one 4,4'-[phenylenebis(alkylidene)]-bis[phenol], or a mixture thereof, and (b) the allylic utilization of said composition is greater than 50 percent.
Claim 3
Dependent Claim
14 words
The composition of Claim 1 wherein the allylic utilization is at least 51 percent.
Claim 4
Dependent Claim
15 words
The composition of Claim 1 wherein the allylic utilization is at least about 55 percent.
Claim 5
Dependent Claim
15 words
The composition of Claim 1 wherein the allylic utilization is at least about 60 percent.
Claim 6
Dependent Claim
20 words
The composition of Claim 1 wherein the allylic utilization is in the range of from 51 to about 80 percent.
Claim 7
Dependent Claim
21 words
The composition of Claim 1 wherein the allylic utilization is in the range of from about 55 to about 80 percent.
Claim 8
Dependent Claim
21 words
The composition of claim 1 wherein the allylic utilization is in the range of from about 60 to about 80 percent.
Claim 9
Dependent Claim
80 words
The composition of claim 1 wherein the monomer which has been partially polymerized is bis(allylic carbonate) monomer of one or more bisphenolic compounds, each represented by the formula HO--A--OH where A is represented by the formula ##STR9## in which each Q is alkylidene independently containing from 1 to about 5 carbon atoms, each R is independently hydrogen, halo, lower alkyl containing from 1 to about 4 carbon atoms, methoxy, or ethoxy, and the value of n is 0 or 1.
Claim 10
Dependent Claim
10 words
The composition of claim 8 wherein each Q is 1-methylethylidene.
Claim 11
Dependent Claim
14 words
The composition of claim 8 wherein said bis(allylic carbonate) monomer is bis(allyl carbonate) monomer.
Claim 12
Dependent Claim
9 words
The composition of claim 1 which is essentially solvent-free.
Claim 13
Dependent Claim
30 words
The composition of Claim 11 wherein the monomer which has been partially polymerized is bis(allyl carbonate) monomer of at least one bisphenolic compound selected from 4,4'-(1-methylethylidene)bis-[phenol], 4,4'-(1-methylethylidene)bis[2,6-dichlorophenol], 4,4'-(1-methylethylidene)bis[2,6-dibromophenol], and 4,4'-[1,3-phenylenebis(1methylethylidene)]bis[phenol].
Claim 14
Dependent Claim
19 words
The composition of Claim 11 wherein the monomer which has been partially polymerized is bis(allyl carbonate) monomer of 4,4'-(1methylethylidene)bis[phenol].
Claim 15
Dependent Claim
19 words
The composition of Claim 11 wherein the monomer which has been partially polymerized is bis(allyl carbonate) monomer of 4,4'-[1,3phenylenebis(1-methylethylidene)]bis[phenol].
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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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |