Patent US4511732A successfully refreshed from Google Patents.
US4511732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low viscosity UV curable polyacrylates
Assignee: Hi Tek Polymers Inc
•
Filing: 1983-04-25
•
Granted: 1985-04-16
•
Expires: 2003-04-25
Abstract
Abstract Photocurable polyacrylate or methacrylate compounds which exhibit extremely low, neat viscosities while at the same time maintaining the high cure response of other related photocurable materials may be represented by the general formula: <IMAGE> wherein R is hydrogen or methyl, R' is C1-C8 alkyl or C3-C8 alkyl ether alkyl and A is the residue of a diol or dicarboxylic acid, preferably a diphenol such as Bisphenol A. The process for preparing these materials involves reacting a C1-C8 aliphatic alcohol or C3-C8 aliphatic ether alcohol with a diglycidyl ether or ester and esterifying the remaining hydroxyl groups with acrylic or methacrylic acid.
Inventors
- 👤 Darrell D. Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:52
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
54 words
A photocurable, relatively low viscosity, liquid monomer having the formula ##STR5## wherein R is hydrogen or methyl, R' is C 1 -C 8 alkyl or C 3 -C 8 alkyl ether alkyl, and A is the aromatic or aliphatic residue of a diol or the diacyl aliphatic or aromatic residue of a dicarboxylic acid.
Claim 2
Dependent Claim
54 words
A photocurable, relatively low viscosity, liquid monomer having the formula ##STR5## wherein R is hydrogen or methyl, R' is C 1 -C 8 alkyl or C 3 -C 8 alkyl ether alkyl, and A is the aromatic or aliphatic residue of a diol or the diacyl aliphatic or aromatic residue of a dicarboxylic acid.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein R' is CH 3 .
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein R' is C 4 H 9 .
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein R' is C 6 H 13 .
Claim 6
Dependent Claim
9 words
The composition of claim 1 wherein R is H.
Claim 7
Dependent Claim
13 words
The composition of claim 1 wherein A is the residue of p,p'-dihydroxydiphenyl propane.
Claim 8
Dependent Claim
17 words
The composition of claim 1 wherein R is hydrogen and A is the residue of p,p'-dihydroxydiphenyl propane.
References Cited (Backward Citations)
US2890202A
Cited
US3480664A
Cited
US3676398A
Cited
US3586529A
Cited
US3586527A
Cited
US3586528A
Cited
US3586530A
Cited
US3586526A
Cited
US4056453A
Cited
US4072592A
Cited
US4146452A
Cited
US4164423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |