Patent US1746737A successfully refreshed from Google Patents.
Patent US4021403A successfully refreshed from Google Patents.
US4021403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant thermosetting resin composition and metal clad laminate composed of the thermosetting resin composition
Assignee: Maruzen Petrochemical Co Ltd
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Filing: 1975-02-07
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Granted: 1977-05-03
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Expires: 1995-02-07
Abstract
Abstract A thermosetting resin composition having excellent flame resistance and thermal stability comprising an epoxy resin and a halogenated polyhydroxstyrene and a metal clad laminate comprising at least one planar base material having impregnated therein the above-described flame resistant thermosetting resin composition and at least one metal foil laminated thereon.
Inventors
- 👤 Hiroshi Fujiwara
- 👤 Hiroshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:30
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/12; C; C08; C08L; C08L25/00; C08L25/18; B32B13/00; B32B13/04; B32B13/06; B32B15/14; C08L63/00; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/028; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31522
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A flame resistant thermosetting resin composition comprising an epoxy resin comprising an epoxy compound having at least two epoxy groups per molecule and a halogenated polyhydroxystyrene or a mixture of a halogenated polyhydroxystyrene and polyhydroxystyrene, wherein said halogenated polyhydroxystyrene has a mean degree of polymerization of from about 2 to 10,000 and the equivalent ratio of the number of hydroxyl groups in said halogenated polyhydroxystyrene and polyhydroxystyrene to the number of epoxy groups in said epoxy resin is in the range of 0.3 to 10.
Claim 2
Dependent Claim
85 words
A flame resistant thermosetting resin composition comprising an epoxy resin comprising an epoxy compound having at least two epoxy groups per molecule and a halogenated polyhydroxystyrene or a mixture of a halogenated polyhydroxystyrene and polyhydroxystyrene, wherein said halogenated polyhydroxystyrene has a mean degree of polymerization of from about 2 to 10,000 and the equivalent ratio of the number of hydroxyl groups in said halogenated polyhydroxystyrene and polyhydroxystyrene to the number of epoxy groups in said epoxy resin is in the range of 0.3 to 10.
Claim 3
Dependent Claim
26 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said halogenated polyhydroxystyrene has a halogen content of about 15 to 70% by weight.
Claim 4
Dependent Claim
19 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said halogenated polyhydroxystyrene is a brominated polyhydroxystyrene.
Claim 5
Dependent Claim
78 words
The flame resistant thermosetting resin composition as claimed in claim l, wherein said epoxy resin is a bisphenol type epoxy resin, a novolac type epoxy resin, a resole type epoxy resin, a polyphenol type epoxy resin, a polyhydroxybenzene type epoxy resin, a polyglycol type epoxy resin, an aromatic carboxylic acid type epoxy resin, an aliphatic carboxylic acid type epoxy resin, an alicyclic epoxy resin, a nitrogen-containing epoxy resin, a diene type epoxy resin, or a metal-containing epoxy resin.
Claim 6
Dependent Claim
19 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said composition further contains a hardening accelerator.
Claim 7
Dependent Claim
24 words
The flame resistant thermosetting resin composition as claimed in claim 5, wherein said hardening accelerator is dimethylaminobenzaldehyde, dimethylbenzylamine, triethanolamine, diethylenetriamine, urea, dicyandiamide, or dimethylformamide.
Claim 8
Dependent Claim
19 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said ratio is equivalent 0.5 to 5.
Claim 9
Dependent Claim
35 words
The flame resistant thermosetting resin composition as claimed in claim 1, further comprising a plasticizer in an amount of from 0.5 to 20 weight % based on the weight of the resin in the composition.
Claim 10
Dependent Claim
31 words
The flame resistant thermosetting resin composition as claimed in claim 1, further comprising a reinforcing agent in an amount of from 20 to 900 parts per hundred of the resin composition.
Claim 11
Dependent Claim
29 words
The flame resistant thermosetting resin composition as claimed in claim 1, further comprising a filler in an amount of less than 900 parts per hundred of the resin composition.
Claim 12
Dependent Claim
26 words
The flame resistant thermosetting resin composition as claimed in claim 1, further comprising a hardening accelerator selected from the group consisting of tertiary amines or polyamines.
Claim 13
Dependent Claim
29 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said halogenated polyhydroxystyrene is a brominated polyhydroxystyrene having a halogen content of 30 to 60% by weight.
Claim 14
Dependent Claim
35 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said halogenated polyhydroxystyrene is a brominated polyhydroxystyrene in which less than about 30 mole percent of the bromine has been replaced by chlorine.
Claim 15
Dependent Claim
22 words
The flame resistant thermosetting resin composition as claimed in claim 1, wherein said mean degree of polymerization is from 10 to 150.
References Cited (Backward Citations)
US3050476A
Cited
US3884992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |