US4435543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic resin compositions
Assignee: Mitsui Chemicals Inc
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Filing: 1982-04-12
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Granted: 1984-03-06
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Expires: 2002-04-12
Abstract
Abstract Phenolic resin compositions comprising a polymeric substance having a phenolic OH group such as phenol resins, and a rubber having an epoxy group and an epoxy equivalent of 500 to 30,000 such as butadiene copolymers, acrylic copolymers, chloroprene copolymers and urethane copolymers are provided. These resin compositions exhibit improved properties having overcome the drawback of brittle properties intrinsic of conventional phenolic resins, and also exhibit cold resistance; hence they are used as molding materials, laminating materials, casting materials, binders, etc. Further, molding resin compositions having improved solvent-resistance and metal insert properties are provided.
Inventors
- 👤 Kenji Ema
- 👤 Junji Hara
- 👤 Shuhei Ikado
- 👤 Hideo Kawashima
- 👤 Tomohide Yokoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:34
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08L63/00; C08L63/08; Y; Y10; Y10S; Y10S525/00; Y10S525/92
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
Phenolic resin compositions for molding comprising 100 parts by weight of a polymeric substance having a phenolic OH group selected from the group consisting a phenolic resin and a phenolic polymer and 1 to 100 parts by weight of a rubber containing an epoxy group in its molecule and having an epoxy equivalent of 500 to 30,000 said rubber containing an epoxy group being an acrylic polymer and having a glass transition temperature of 25° C. or lower.
Claim 2
Dependent Claim
78 words
Phenolic resin compositions for molding comprising 100 parts by weight of a polymeric substance having a phenolic OH group selected from the group consisting a phenolic resin and a phenolic polymer and 1 to 100 parts by weight of a rubber containing an epoxy group in its molecule and having an epoxy equivalent of 500 to 30,000 said rubber containing an epoxy group being an acrylic polymer and having a glass transition temperature of 25° C. or lower.
Claim 3
Dependent Claim
46 words
Phenolic resin compositions according to claim 1 wherein said polymeric substance having a phenolic OH group is a phenolic resin selected from the group consisting of novolak type phenolic resins, novolak type phenolic resins having a high content of ortho bond and resol type phenolic resins.
Claim 4
Dependent Claim
56 words
Phenolic resin compositions according to claim 1 wherein said polymeric substance having a phenolic OH group is a phenolic polymer selected from the group consisting of alkenylphenol polymers, copolymers of an alkenylphenol with another polymerizable monomer, copolymers of a phenolic compound with a p-xylylene dihalide and copolymers of a phenolic compound with a p-xylylene dialkyl ether.
Claim 5
Dependent Claim
20 words
Phenolic resin compositions according to claim 1 wherein said polymeric substance having a phenolic OH group is a phenolic resin.
Claim 6
Dependent Claim
20 words
Phenolic resin compositions according to claim 1 wherein said polymeric substance having a phenolic OH group is a phenolic polymer.
Claim 7
Dependent Claim
63 words
Phenolic resin compositions for molding obtained by melt-mixing 100 parts by weight of a phenolic resin with 1 to 100 parts by weight of a rubber having an epoxy group in its molecule and having an epoxy equivalent of 500 to 30,000, said rubber having an epoxy group being an acrylic polymer and having a glass transition temperature of 25° C. or lower.
Claim 8
Dependent Claim
63 words
Phenolic resin compositions for molding obtained by melt-mixing 100 parts by weight of a phenolic resin with 1 to 100 parts by weight of a rubber having an epoxy group in its molecule and having an epoxy equivalent of 500 to 30,000, said rubber having an epoxy group being an acrylic polymer and having a glass transition temperature of 25° C. or lower.
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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) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |