Patent US3947393A successfully refreshed from Google Patents.
US3947393A
Expired / Lapsed
US
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Resin composition for laminates and prepared therefrom
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1974-07-29
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Granted: 1976-03-30
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Expires: 1994-07-29
Abstract
Abstract A resin composition for laminates excellent in water resistance, electrical properties, mechanical strength, punchability and heat resistance is obtained by blending a drying oil-modified-resol type phenolic resin and a resol type water soluble phenolic resin with a drying oil-phenols-modified mesitylene-formaldehyde resin.
Inventors
- 👤 Shunichi Sato
- 👤 Mineaki Tanigaichi
- 👤 Kazuyoshi Iwasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:33
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/14; C08J; C08J5/00; C08J5/24; C08J5/245; C08J5/249; C09; C09D; C09D161/00; C09D161/34; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; C08J2361/00; C08J2361/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A composition for preparing laminates which comprises, A. a drying oil-phenols-modified mesitylene-formaldehyde resin, obtained by first reacting a mixture of a mesitylene-formaldehyde resin, phenols and drying-oils in the presence of acid catalyst, followed by reacting the obtained product with formaldehyde in the presence of basic catalyst, B. a drying oil modified resol type phenolic resin, obtained by first reacting phenols with drying-oils in the presence of acid catalyst, followed by reacting with formaldehyde in the presence of basic catalyst, C. a resol type water-soluble phenolic resin, obtained by reacting phenols with formaldehyde in the presence of basic catalyst, wherein the amount of (A) to be mixed is from 5 to 95 parts by weight based on 100 parts of the sum of the amounts of (A) and (B) and the amount of (C) to be mixed is 5 to 45 parts by weight based on 100 parts of the sum of the amounts of (A) and (B).
Claim 2
Dependent Claim
157 words
A composition for preparing laminates which comprises, A. a drying oil-phenols-modified mesitylene-formaldehyde resin, obtained by first reacting a mixture of a mesitylene-formaldehyde resin, phenols and drying-oils in the presence of acid catalyst, followed by reacting the obtained product with formaldehyde in the presence of basic catalyst, B. a drying oil modified resol type phenolic resin, obtained by first reacting phenols with drying-oils in the presence of acid catalyst, followed by reacting with formaldehyde in the presence of basic catalyst, C. a resol type water-soluble phenolic resin, obtained by reacting phenols with formaldehyde in the presence of basic catalyst, wherein the amount of (A) to be mixed is from 5 to 95 parts by weight based on 100 parts of the sum of the amounts of (A) and (B) and the amount of (C) to be mixed is 5 to 45 parts by weight based on 100 parts of the sum of the amounts of (A) and (B).
Claim 3
Dependent Claim
20 words
Resin composition according to claim 1 wherein, as for phenols for modifying mesitylene-formaldehyde resin in Resin (A), phenol is used.
Claim 4
Dependent Claim
52 words
A resin composition according to claim 1, wherein said drying oil-phenols-modified mesitylene resin is at least one member selected from the group consisting of tung oil-phenol-modified mesitylene-formaldehyde resin, linseed oil-phenol-modified mesitylene-formaldehyde resin, dehydrated castor oil-phenol-modified mesitylene-formaldehyde resin, tung oil-xylenol-modified mesitylene-formaldehyde resin, tung oil-m-cresol-modified mesitylene-formaldehyde resin and tung oil-bisphenol A-modified mesitylene formaldehyde resin.
Claim 5
Dependent Claim
46 words
A resin composition according to claim 1, wherein said drying oil-modified resol type phenolic resin is at least one member selected from the group consisting of tung oil-modified resol type phenolic resin, tung oil-modified resol type xylenol resin and dehydrated castor oil-modified resol type phenol resin.
Claim 6
Dependent Claim
32 words
A resin composition according to claim 1, wherein said mesitylene-formaldehyde in resin (A) is a resin obtained by reacting C 9 -aromatic hydrocarbons containing at least 50 percent of mesitylene with formaldehyde.
Claim 7
Dependent Claim
31 words
A resin composition according to claim 1, wherein said mesitylene-formaldehyde in resin (A) is a resin obtained by reacting C 9 -aromatic hydrocarbons containing at least 70% of mesitylene with formaldehyde.
Claim 8
Dependent Claim
27 words
A varnish of the resin composition according to claim 1, which is obtained by mixing said resins A, B and C with one or more of solvents.
Claim 9
Dependent Claim
23 words
A varnish according to claim 7, wherein said solvent is selected from the group consisting of lower molecular alcohols, ketones and aromatic hydrocarbons.
Claim 10
Dependent Claim
19 words
A resin composition according to claim 3, wherein drying oil-phenols-modified mesitylene formaldehyde resin is tung oil-phenol-modified mesitylene formaldehyde resin.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |