Patent US4268337A successfully refreshed from Google Patents.
US4268337A
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US
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Sheet molding material produced by associating a layer comprising a photopolymerizable material with layers comprising thermosetting resins
Assignee: Asahi Kasei Corp
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Filing: 1979-11-09
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Granted: 1981-05-19
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Expires: 1999-11-09
Abstract
Abstract A sheet molding material comprising (1) an interlayer containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin, and (2) a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin on both surfaces of the interlayer (1); and a process for the production of the sheet molding material.
Inventors
- 👤 Jyoji Ibata
- 👤 Hisaaki Fukui
- 👤 Takeo Yuasa
- 👤 Michio Katoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:43
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/26; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B27/06; B32B27/08; B32B27/16; B32B27/20; B32B37/00; B32B37/14; B32B37/15; B32B37/153; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/036; B32B2250/00; B32B2250/03; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2201/0242; H05K2201/0251
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
A process for continuously producing a sheet molding material comprising (1) an interlayer containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin and (2) a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin on both surfaces of the interlayer (1), which comprises extruding a composition containing a photopolymerizable resin and a photocuring agent for the polymerizable resin as the interlayer (1) using an extruder and a sheet die, adhering a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin to both surfaces of the interlayer (1) to form surface layers (2) thereon, and irradiating the assembly with light to cure the interlayer (1).
Claim 2
Dependent Claim
119 words
A process for continuously producing a sheet molding material comprising (1) an interlayer containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin and (2) a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin on both surfaces of the interlayer (1), which comprises extruding a composition containing a photopolymerizable resin and a photocuring agent for the polymerizable resin as the interlayer (1) using an extruder and a sheet die, adhering a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin to both surfaces of the interlayer (1) to form surface layers (2) thereon, and irradiating the assembly with light to cure the interlayer (1).
Claim 3
Dependent Claim
41 words
The process of claim 1, wherein the surface layer of the thermosetting resin containing a heat curing agent for the thermosetting resin adhered as one surface layer (2) additionally contains a photopolymerizable resin and a photocuring agent for the photopolymerizable resin.
Claim 4
Dependent Claim
29 words
The process of claim 1, wherein the composition for the interlayer (1) is free of a heat curing agent and both surface layers (2) contain a continuous-phase base material.
Claim 5
Dependent Claim
26 words
The process of claim 3, wherein the composition for the interlayer (1) additionally contains at least one of a short fiber material and an inorganic filler.
Claim 6
Dependent Claim
14 words
The process of claim 3, wherein the continuous-phase base material is a glass cloth.
Claim 7
Dependent Claim
142 words
A process for continuously producing a metal-clad laminate comprising (1) an interlayer containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin, (2) a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin on both surfaces of the interlayer (1), and (3) a metal layer on one surface layer (2), which process comprises extruding a composition containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin as the interlayer (1) using an extruder and a sheet die, adhering a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin to both surfaces of the interlayer (1) to form surface layers (2) thereon, irradiating the assembly with light to cure the interlayer (1), and laminating on at least one of the surface layers (2) a metal layer (3).
Claim 8
Dependent Claim
142 words
A process for continuously producing a metal-clad laminate comprising (1) an interlayer containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin, (2) a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin on both surfaces of the interlayer (1), and (3) a metal layer on one surface layer (2), which process comprises extruding a composition containing a photopolymerizable resin and a photocuring agent for the photopolymerizable resin as the interlayer (1) using an extruder and a sheet die, adhering a surface layer of a thermosetting resin containing a heat curing agent for the thermosetting resin to both surfaces of the interlayer (1) to form surface layers (2) thereon, irradiating the assembly with light to cure the interlayer (1), and laminating on at least one of the surface layers (2) a metal layer (3).
Claim 9
Dependent Claim
14 words
The process of claim 6, wherein the metal layer is a layer of copper.
Claim 10
Dependent Claim
29 words
The process of claim 6, wherein the composition for the interlayer (1) is free of a heat curing agent and both surface layers (2) contain a continuous-phase base material.
Claim 11
Dependent Claim
26 words
The process of claim 8, wherein the composition for the interlayer (1) additionally contains at least one of a short fiber material and an inorganic filler.
Claim 12
Dependent Claim
14 words
The process of claim 8, wherein the continuous-phase base material is a glass cloth.
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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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |