US5578657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CRT adhesive composition and CRT obtained by the use thereof
Assignee: Nippon Kayaku Co Ltd
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Filing: 1995-05-11
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Granted: 1996-11-26
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Expires: 2015-05-11
Abstract
Abstract Disclosed herein are adhesive compositions for use in cathode ray tubes comprising a specified epoxy (meth)acrylate, hydroxyl-containing mono (meth)acrylate, a photopolymerization initiator and optionally an urethane (meth)acrylate, the cured products thereof as well as cathode ray tubes obtained by the use thereof. The adhesive compositions of the present invention are excellent in spreadability and the resulting cured products have a good adhesion to glass. Cathode ray tubes in which a sheet of film is bonded to panel-glass by using an adhesive of the present invention exhibit satisfactory screen states comparable to those exhibited by cathode ray tubes subjected to a polishing process.
Inventors
- 👤 Takuji Inoue
- 👤 Tsunenari Saito
- 👤 Kenji Nakayama
- 👤 Hiroe Ito
- 👤 Minoru Yokoshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:02
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; C; C08; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/064; C09; C09J; C09J163/00; C09J163/10; C09J4/00; C09J4/06; C09J2203/00; C09J2203/326
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
89 words
An adhesive composition for use in cathode ray tubes comprising: a bisphenol A epoxy (meth)acrylate which is obtained by reacting a bisphenol A epoxy resin with (meth)acrylic acid and has a molecular weight of 550 or more and/or an epoxy (meth)acrylate (A) represented by the formula (1): ##STR2## in which, R 1 represents a hydrogen atom or CH 3 ; and the average value of n represents a number of 0.5 or more, a hydroxyl-containing mono(meth)acrylate (C) and a photopolymerization initiator (D), optionally together with a urethane (meth)acrylate (B).
Claim 2
Dependent Claim
89 words
An adhesive composition for use in cathode ray tubes comprising: a bisphenol A epoxy (meth)acrylate which is obtained by reacting a bisphenol A epoxy resin with (meth)acrylic acid and has a molecular weight of 550 or more and/or an epoxy (meth)acrylate (A) represented by the formula (1): ##STR2## in which, R 1 represents a hydrogen atom or CH 3 ; and the average value of n represents a number of 0.5 or more, a hydroxyl-containing mono(meth)acrylate (C) and a photopolymerization initiator (D), optionally together with a urethane (meth)acrylate (B).
Claim 3
Dependent Claim
58 words
An adhesive composition for use in cathode ray tubes comprising: an epoxy (meth)acrylate (A) represented by the formula (1): ##STR3## in which, R 1 represents a hydrogen atom or CH 3 ; and the average value of n represents a number of 0.5 or more, a hydroxyl-containing mono(meth)acrylate (C), a photopolymerization initiator (D) and an urethane (meth)acrylate (B).
Claim 4
Dependent Claim
58 words
An adhesive composition for use in cathode ray tubes comprising: an epoxy (meth)acrylate (A) represented by the formula (1): ##STR3## in which, R 1 represents a hydrogen atom or CH 3 ; and the average value of n represents a number of 0.5 or more, a hydroxyl-containing mono(meth)acrylate (C), a photopolymerization initiator (D) and an urethane (meth)acrylate (B).
Claim 5
Dependent Claim
49 words
An adhesive composition for use in cathode ray tubes comprising:a bisphenol A epoxy (meth)acrylate which is obtained by reacting a bisphenol A epoxy resin with (meth)acrylic acid and has a molecular weight of 550 or more, a hydroxyl-containing mono(meth)acrylate (C), a photopolymerization initiator (D) and a urethane (meth)acrylate (B).
Claim 6
Dependent Claim
49 words
An adhesive composition for use in cathode ray tubes comprising:a bisphenol A epoxy (meth)acrylate which is obtained by reacting a bisphenol A epoxy resin with (meth)acrylic acid and has a molecular weight of 550 or more, a hydroxyl-containing mono(meth)acrylate (C), a photopolymerization initiator (D) and a urethane (meth)acrylate (B).
Claim 7
Dependent Claim
53 words
An adhesive composition for use in cathode ray tubes comprising: an epoxy (meth)acrylate (A) represented by the formula (1): ##STR4## in which, R 1 represents a hydrogen atom or CH 3 ; and the average value n represents a number of 0.5 or more, a hydroxyl-containing mono(meth)acrylate (C) and a photopolymerization initiator (D).
Claim 8
Dependent Claim
53 words
An adhesive composition for use in cathode ray tubes comprising: an epoxy (meth)acrylate (A) represented by the formula (1): ##STR4## in which, R 1 represents a hydrogen atom or CH 3 ; and the average value n represents a number of 0.5 or more, a hydroxyl-containing mono(meth)acrylate (C) and a photopolymerization initiator (D).
Claim 9
Dependent Claim
46 words
An adhesive composition for use in cathode ray tubes comprising: a bisphenol A epoxy (meth)acrylate which is obtained by reacting a bisphenol A epoxy resin with (meth)acrylic acid and has a molecular weight of 550 or more, a hydroxyl-containing mono(meth)acrylate (C) and a photopolymerization initiator (D).
Claim 10
Dependent Claim
46 words
An adhesive composition for use in cathode ray tubes comprising: a bisphenol A epoxy (meth)acrylate which is obtained by reacting a bisphenol A epoxy resin with (meth)acrylic acid and has a molecular weight of 550 or more, a hydroxyl-containing mono(meth)acrylate (C) and a photopolymerization initiator (D).
Claim 11
Dependent Claim
36 words
The adhesive compositon for use in cathode ray tube according to any one of the claims 1 to 5, characterized in that said adhesive has a 25° C. refractive index of 1.520 to 1.550 after cured.
Claim 12
Dependent Claim
17 words
A cured product of the adhesive composition for use in cathode ray tubes according to claim 6.
Claim 13
Dependent Claim
23 words
A cathode ray tube in which a sheet of film is bonded to panel-glass by using the adhesive composition according to claim 7.
Claim 14
Dependent Claim
16 words
A cathode ray tube according to claim 8 wherein the sheet of film is polyester film.
Claim 15
Dependent Claim
23 words
A cathode ray tube in which a sheet of film is bonded to panel-glass by using the adhesive composition according to claim 6.
Claim 16
Dependent Claim
16 words
A cathode ray tube according to claim 10 wherein the sheet of film is polyester film.
Claim 17
Dependent Claim
23 words
A cured product of the adhesive composition for use in cathode ray tubes according to any one of the claims 1 to 5.
Claim 18
Dependent Claim
23 words
A cathode ray tube in which a sheet of film is bonded to panel-glass by using the adhesive composition according to claim 12.
Claim 19
Dependent Claim
16 words
A cathode ray tube according to claim 13 wherein the sheet of film is polyester film.
Claim 20
Dependent Claim
29 words
A cathode ray tube in which a sheet of film is bonded to panel-glass by using the adhesive composition according to any one of the claims 1 to 5.
Claim 21
Dependent Claim
16 words
The cathode ray tube according to claim 15 wherein the sheet of film is polyester film.
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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) | 1999-11-26 | 2000-05-27 | 2000-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-26 | 2004-05-27 | 2004-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-26 | 2008-05-27 | 2008-11-26 | $7700.00 | Window Closed / Lapsed |