Patent US4741987A successfully refreshed from Google Patents.
US4741987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable composition including benzotriazole carboxylic acid
Assignee: Tokyo Ohka Kogyo Co Ltd
•
Filing: 1987-06-12
•
Granted: 1988-05-03
•
Expires: 2007-06-12
Abstract
Abstract The composition of this invention comprises: (a) a thermoplastic organic polymer, (b) a non-gaseous ethylenically unsaturated compound containing at least two terminal ethylenic groups capable of forming a polymer by photoinitiated addition polymerization, (c) an addition polymerization initiator activatable by actinic radiation, and (d) a benzotriazole carboxylic acid.
Inventors
- 👤 Hiroyuki Tohda
- 👤 Shigeru Otawa
- 👤 Junichi Onodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:49
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0076; G; G03; G03F; G03F7/00; G03F7/004; G03F7/085; H05K2203/00; H05K2203/12; H05K2203/122; H05K2203/124; H05K3/02; H05K3/06; H05K3/061; H05K3/064; H05K3/38; H05K3/389; Y; Y10; Y10S; Y10S430/00; Y10S430/155
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A photopolymerizable composition consisting essentially of: (a) a thermoplastic organic polymer, (b) a non-gaseous ethylenically unsaturated compound containing at least two terminal ethylenic groups capable of forming a polymer by photoinitiated addition polymerization, (c) an addition polymerization initiator activatable by actinic radiation, and (d) from 0.005 to 5 percent by weight, based on the weight of the composition, of a benzotriazole carboxylic acid or its derivative represented by the general formula: ##STR3## where R represents a hydrogen atom, an alkali metal atom or an aliphatic hydrocarbon group having from 1 to 12 carbon atoms.
Claim 2
Dependent Claim
94 words
A photopolymerizable composition consisting essentially of: (a) a thermoplastic organic polymer, (b) a non-gaseous ethylenically unsaturated compound containing at least two terminal ethylenic groups capable of forming a polymer by photoinitiated addition polymerization, (c) an addition polymerization initiator activatable by actinic radiation, and (d) from 0.005 to 5 percent by weight, based on the weight of the composition, of a benzotriazole carboxylic acid or its derivative represented by the general formula: ##STR3## where R represents a hydrogen atom, an alkali metal atom or an aliphatic hydrocarbon group having from 1 to 12 carbon atoms.
Claim 3
Dependent Claim
57 words
The photopolymerizable composition as defined in claim 1, comprising: (a) from 10 to 85% by weight of the thermoplastic organic polymer, (b) from 10 to 85% by weight of the ethylenically unsaturated compound, (c) from 1 to 15% by weight of the photopolymerization initiator, and (d) from 0.005 to 5% by weight of the benzotriazole carboxylic acid.
Claim 4
Dependent Claim
18 words
The photopolymerizable composition as defined in claim 1, wherein the thermoplastic organic polymer is a linear vinylic copolymer.
Claim 5
Dependent Claim
60 words
The photopolymerizable composition as defined in claim 3, wherein the linear vinylic copolymer is a copolymer of compounds selected from the group consisting of methyl methacrylate, butyl methacrylate, ethyl acrylate, styrene, α-methylstyrene, vinyl toluene, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, acrylic acid, methacrylic acid, glycidyl methacrylate, t-butyl aminoethyl methacrylate, 2,3-dibromopropyl methacrylate, 3-chloro-2-hydroxypropyl methacrylate, tetrahydrofurfryl methacrylate, tribromophenyl acrylate, acryl amide, acrylonitrile and butadiene.
Claim 6
Dependent Claim
20 words
The photopolymerizable composition as defined in claim 3, wherein the linear vinylic copolymer is soluble in an aqueous alkaline solution.
Claim 7
Dependent Claim
27 words
The photopolymerizable composition as defined in claim 5, wherein the linear vinylic copolymer soluble in an aqueous alkaline solution has an acid value from 30 to 130.
Claim 8
Dependent Claim
24 words
The photopolymerizable composition as defined in claim 1, wherein the benzotriazole carboxylic acid is a mixture of 4-benzotriazole carboxylic acid and 5-benzotriazole carboxylic acid.
References Cited (Backward Citations)
US4438190A
Cited
US4572888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |