US4610810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable resin, paint or ink vehicle composition comprising said resin and magnetic recording medium or resistor element using said resin
Assignee: Panasonic Holdings Corp
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Filing: 1985-05-17
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Granted: 1986-09-09
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Expires: 2005-05-17
Abstract
Abstract A resin having a monomer unit structure represented by the formula: ##STR1## can be cured by an actinic irradiation such as electron beam, ultraviolet ray or infrared ray to give a heat-resistant, moisture-resistant, acid- and alkali-resistant and solvent-resistant film which is especially suitable for a paint vehicle resin for use in resistor element or magnetic recording medium. A composition comprising said resin modified by incorporating at least of one monomer or oligomer containing at least one acryl, methacryl or allyl group therein for facilitating the control of the characteristics of a resistor element obtained by using said composition is also disclosed.
Inventors
- 👤 Yo Hasegawa
- 👤 Satoshi Murakawa
- 👤 Yukihiro Shimazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:56
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/7026; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/30; C08G; C08G8/00; C08G8/28; C08G8/32; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/101; C09D4/00; G11B5/7023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
32 words
A resistor element characterized in that which is prepared by curing a conductive paint or ink comprising an acryl or methacryl ester solution of bisphenol A-formaldehyde condensation product, and a conductive powder.
Claim 2
Dependent Claim
32 words
A resistor element characterized in that which is prepared by curing a conductive paint or ink comprising an acryl or methacryl ester solution of bisphenol A-formaldehyde condensation product, and a conductive powder.
Claim 3
Dependent Claim
52 words
A resistor element characterized in that which is prepared by curing a conductive paint or ink comprising a mixture of an acryl or methacryl ester solution of bisphenol A-formaldehyde condensation product and at least one monomer or oligomer containing at least one acryl, methacryl or allyl group therein, or a mixture thereof.
Claim 4
Dependent Claim
52 words
A resistor element characterized in that which is prepared by curing a conductive paint or ink comprising a mixture of an acryl or methacryl ester solution of bisphenol A-formaldehyde condensation product and at least one monomer or oligomer containing at least one acryl, methacryl or allyl group therein, or a mixture thereof.
Claim 5
Dependent Claim
41 words
A resistor element as claimed in claim 1, wherein said conductive powder is a metal powder of silver, copper or their alloy, a metal oxide powder, a metal carbide powder, a metal boride powder, carbon black, graphite or a mixture thereof.
Claim 6
Dependent Claim
57 words
A resistor element as claimed in claim 2, wherein said monomer or oligomer is selected from the group consisting of: (a) acrylate or oligoacrylate of primary or polyhydric alcohol, (b) methacrylate or oligomethacrylate of primary or polyhydric alcohol, and (c) allyl alcohol, diallyl ether, diallyl adipate, diallyl phthalate and both end diallylate of low molecular weight polyurethane.
Claim 7
Dependent Claim
54 words
A resistor element comprising a conductive powder and a cured resin having a monomer structure represented by the formula: ##STR3## wherein, R is methylol group, acrylated or methacrylated methylol group, and the molar ratio of the methylol group to the acrylated or methacrylated methyol group is in the range of from 20:1 to 1:3.
Claim 8
Dependent Claim
54 words
A resistor element comprising a conductive powder and a cured resin having a monomer structure represented by the formula: ##STR3## wherein, R is methylol group, acrylated or methacrylated methylol group, and the molar ratio of the methylol group to the acrylated or methacrylated methyol group is in the range of from 20:1 to 1:3.
Claim 9
Dependent Claim
30 words
A resistor element as claimed in claim 5, wherein said cured product further comprises at least one monomer or oligomer containing at least one acryl, methacryl or allyl group therein.
Claim 10
Dependent Claim
59 words
A magnetic recording medium having as its magnetic coating film a magnetic powder and a cured resin having a monomer structure represented by the formula: ##STR4## wherein, R is methylol group, acrylated or methacrylated methylol group, and the molar ratio of the methylol group to the acrylated or methacrylated methyol group in the range of from 20:1 to 1:3.
Claim 11
Dependent Claim
59 words
A magnetic recording medium having as its magnetic coating film a magnetic powder and a cured resin having a monomer structure represented by the formula: ##STR4## wherein, R is methylol group, acrylated or methacrylated methylol group, and the molar ratio of the methylol group to the acrylated or methacrylated methyol group in the range of from 20:1 to 1:3.
Claim 12
Dependent Claim
31 words
A magnetic recording medium as claimed in claim 7, wherein said cured product further comprises at least one monomer or oligomer containing at least one acryl, methacryl or allyl group therein.
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) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |