US4826895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint composition for under coating
Assignee: Adeka Corp
•
Filing: 1987-12-30
•
Granted: 1989-05-02
•
Expires: 2007-12-30
Abstract
Abstract The paint composition for under coating of the present invention comprises 60 to 90% by weight of an epoxy polyol resin optionally together with a hardener therefor and 10 to 40% by weight of silica particles. Said epoxy polyol resin is obtained by reacting an optionally substituted glycidyl-etherified product of an alkylene oxide adduct of a dihydric phenol with a phosphorus acid having at least one P-OH bond, an ester or a salt thereof to thereby give a precondensate, reacting said precondensate with a dihydric phenol to give an epoxy resin of a high molecular weight, and further reacting said epoxy resin with a compound having an amino group capable of reacting with an epoxy group. Said silica particles comprise a primary particle having an average particle size of 1 to 10 m mu , a surface area of 270 m2/g or above and a concentration of silanol groups on the particle surface of 0.25 mM/100 m2 or above.
Inventors
- 👤 Hiroshi Kanai
- 👤 Joji Oka
- 👤 Hidehiko Kojo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:36
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/14; C08G59/1405; C08G59/1422; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
153 words
A solvent type paint composition for under coating which comprises the following nonvolatile components: (a) 60 to 90% by weight of an epoxy polyol resin which is obtained by reacting an optionally substituted glycidyl-etherified product of an alkylene oxide adduct of a dihydric phenol with a phosphorus acid having at least one P--OH bond or an ester or a salt thereof to thereby give a precondensate, reacting said precondensate with a dihydric phenol to give an epoxy resin of a high molecular weight, and further reacting said epoxy resin with a compound having an amino group capable of reacting with an epoxy group, and (b) 10 to 40% by weight of silica particles wherein a primary particle has an average particle size of 1 to 10 mμ, a surface area of 270 m 2 /g or above and a silanol group concentration on the particle surface of 0.25 mM/100 m 2 or above.
Claim 2
Dependent Claim
153 words
A solvent type paint composition for under coating which comprises the following nonvolatile components: (a) 60 to 90% by weight of an epoxy polyol resin which is obtained by reacting an optionally substituted glycidyl-etherified product of an alkylene oxide adduct of a dihydric phenol with a phosphorus acid having at least one P--OH bond or an ester or a salt thereof to thereby give a precondensate, reacting said precondensate with a dihydric phenol to give an epoxy resin of a high molecular weight, and further reacting said epoxy resin with a compound having an amino group capable of reacting with an epoxy group, and (b) 10 to 40% by weight of silica particles wherein a primary particle has an average particle size of 1 to 10 mμ, a surface area of 270 m 2 /g or above and a silanol group concentration on the particle surface of 0.25 mM/100 m 2 or above.
Claim 3
Dependent Claim
23 words
A paint composition as set forth in claim 1, wherein said epoxy polyol resin has a number-average molecular weight of 1000 to 15,000.
Claim 4
Dependent Claim
23 words
A paint composition as set forth in claim 1, wherein said optionally substituted glycidyl-etherified product has an epoxy equivalent of 200 to 600.
Claim 5
Dependent Claim
33 words
A paint composition as set forth in claim 1, wherein said phosphorus acid having at least one P--OH bond is selected from the group consisting of orthophosphoric acid, phosphorous acid and polyphosphoric acid.
Claim 6
Dependent Claim
27 words
A paint composition as set forth in claim 1, wherein said ester of phosphorus acid is selected from the group consisting of hydroxybutyl phosphate and 2-ethylhexyl monophosphate.
Claim 7
Dependent Claim
29 words
A paint composition as set forth in claim 1, wherein said salt of phosphorus acid is selected from the group consisting of potassium phosphate, calcium phosphate and sodium phosphate.
Claim 8
Dependent Claim
26 words
A paint composition as set forth in claim 1, wherein said epoxy resin of a high molecular weight has an epoxy equivalent of 1000 to 4000.
Claim 9
Dependent Claim
26 words
A paint composition as set forth in claim 1, wherein said compound having an amino group capable of reacting with an epoxy group is a hydroxylamine.
Claim 10
Dependent Claim
16 words
A paint composition as set forth in claim 1, wherein said silica particles are fumed silica.
Claim 11
Dependent Claim
163 words
A solvent type paint composition for under coating which comprises the following nonvolatile components: (a) 60 to 90% by weight, in total, of an epoxy polyol resin which is obtained by reacting an optionally substituted glycidyl-etherified product of an alkylene oxide adduct of a dihydric phenol with a phosphorus acid having at least one P--OH bond or an ester or a salt thereof to thereby give a precondensate, reacting said precondensate with a dihydric phenol to give an epoxy resin of a high molecular weight, and further reacting said epoxy resin with a compound having an amino group capable of reacting with an epoxy group, and a hardener for said epoxy polyol resin, and (b) 10 to 40% by weight of silica particles wherein a primary particle has an average particle size of 1 to 10 mμ, a surface area of 270 m 2 /g or above and a silanol group concentration on th particle surface of 0.25 mM/100 m 2 or above.
Claim 12
Dependent Claim
163 words
A solvent type paint composition for under coating which comprises the following nonvolatile components: (a) 60 to 90% by weight, in total, of an epoxy polyol resin which is obtained by reacting an optionally substituted glycidyl-etherified product of an alkylene oxide adduct of a dihydric phenol with a phosphorus acid having at least one P--OH bond or an ester or a salt thereof to thereby give a precondensate, reacting said precondensate with a dihydric phenol to give an epoxy resin of a high molecular weight, and further reacting said epoxy resin with a compound having an amino group capable of reacting with an epoxy group, and a hardener for said epoxy polyol resin, and (b) 10 to 40% by weight of silica particles wherein a primary particle has an average particle size of 1 to 10 mμ, a surface area of 270 m 2 /g or above and a silanol group concentration on th particle surface of 0.25 mM/100 m 2 or above.
Claim 13
Dependent Claim
23 words
A paint composition as set forth in claim 10, wherein said epoxy polyol resin has a number-average molecular weight of 1000 to 15,000.
Claim 14
Dependent Claim
32 words
A paint composition as set forth in claim 10, wherein said hardener for said epoxy polyol resin is selected from the group consisting of amino resins, resol-type phenol resins and polyisocyanate resins.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |