Patent US4169186A successfully refreshed from Google Patents.
US4169186A
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US
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Molding material structure
Assignee: Asahi Kasei Corp
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Filing: 1978-04-13
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Granted: 1979-09-25
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Expires: 1998-04-13
Abstract
Abstract A molding material structure of a thermoplastic resin composition comprising (1) at least one pillar-shaped body made of a bundle of glass fiber filaments and a non-oriented thermoplastic resin and (2) an outer covering layer of an oriented thermoplastic resin compatible with the resin in said inner body is found to produce molded articles in which glass fiber filaments are dispersed uniformly in the resin matrix with longer average length to improve various properties of molded articles, especially impact strength.
Inventors
- 👤 Kichiya Tazaki
- 👤 Tamotsu Tahara
- 👤 Akihiro Wada
- 👤 Yukihisa Mizutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:45
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; B29; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B29B15/122; B29B9/00; B29B9/02; B29B9/06; B29B9/12; B29B9/14; B29C; B29C48/00; B29C48/03; B29C48/04; B29C48/15; B29C48/156; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C70/10; B29C70/16; B29C70/20; B29K; B29K2105/00; B29K2105/0058; B29K2105/0064; B29K2105/0073; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29K2105/108; B29K2709/00; B29K2709/08; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0051; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/2998
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A thermoplastic resin pellet having a length of 1 to 20 mm and suitable for manufacture of molded articles which consists essentially of: (1) at least one inner pillar-shaped body, each comprising a bundle of glass fiber filaments embedded in a non-oriented thermoplastic resin, said glass fibers being respectively separated from each other and extending in parallel to each other through the said non-oriented resin and (2) an outer covering layer devoid of glass fiber filaments and made of an oriented thermoplastic resin which is substantially oriented in the axial direction of said glass fiber filaments and compatible with said non-oriented thermoplastic resin in the inner pillar-shaped body, the glass fiber content in the composition being from 5 to 60% by weight, the proportion of the thermoplastic resin in the inner body being from 0.25 to 18% by weight and the thermoplastic resin in the outer layer being from 94.75 to 22% by weight, all proportions being based on the total composition.
Claim 2
Dependent Claim
162 words
A thermoplastic resin pellet having a length of 1 to 20 mm and suitable for manufacture of molded articles which consists essentially of: (1) at least one inner pillar-shaped body, each comprising a bundle of glass fiber filaments embedded in a non-oriented thermoplastic resin, said glass fibers being respectively separated from each other and extending in parallel to each other through the said non-oriented resin and (2) an outer covering layer devoid of glass fiber filaments and made of an oriented thermoplastic resin which is substantially oriented in the axial direction of said glass fiber filaments and compatible with said non-oriented thermoplastic resin in the inner pillar-shaped body, the glass fiber content in the composition being from 5 to 60% by weight, the proportion of the thermoplastic resin in the inner body being from 0.25 to 18% by weight and the thermoplastic resin in the outer layer being from 94.75 to 22% by weight, all proportions being based on the total composition.
Claim 3
Dependent Claim
46 words
A pellet of a thermoplastic resin composition as in claim 1, wherein the thermoplastic resin for the outer layer is selected from the group consisting of polystyrene and rubber-modified high-impact polystyrene and that for the inner body from the group consisting of polystyrene and styrene-butadiene copolymer.
Claim 4
Dependent Claim
63 words
A pellet as in claim 1, wherein the thermoplastic resin for the outer layer is selected from the group consisting of acrylonitrile-styrene copolymer and that for the inner body from the group consisting of acrylonitrile-styrene copolymer and copolymers of styrene with at least one monomer selected from the group consisting of acrylonitrile, acrylic acid and its derivative, and methacrylic acid and its derivative.
Claim 5
Dependent Claim
84 words
A pellet as in claim 1, wherein the thermoplastic resin for the outer layer is selected from the group consisting of acrylonitrile-butadiene-styrene copolymer, methyl methacrylate-acrylonitrile-styrene-butadiene copolymer, methyl methacrylate-styrene-butadiene copolymer and acrylonitrile-butadiene-α-methyl styrene-styrene copolymer and that for the inner body from the group consisting of acrylonitrile-butadiene-styrene copolymer, methyl methacrylate-acrylonitrile-styrene-butadiene copolymer, methyl methacrylate-styrene-butadiene copolymer, acrylonitrile-butadiene-α-methyl styrene-styrene copolymer, acrylonitrile-styrene copolymer, and copolymers of styrene with at least one monomer selected from the group consisting of acrylonitrile, acrylic acid and its derivative, and methacrylic acid and its derivative.
Claim 6
Dependent Claim
44 words
A pellet as in claim 1, wherein the thermoplastic resin for the outer layer is from the group consisting of polyphenylene ether and modified polyphenylene ether and that for the inner body from the group consisting of polyphenylene ether, modified polyphenylene ether and polystyrene.
Claim 7
Dependent Claim
43 words
A pellet as in claim 1, wherein the thermoplastic resin for the outer layer is selected from the group consisting of polyethylene and polypropylene and that for the inner body from the group consisting of polyethylene, polypropylene, ethylene-vinyl acetate copolymer and ethylenic ionomer.
Claim 8
Dependent Claim
29 words
A pellet as in claim 1, wherein the thermoplastic resin for the outer layer and that for the inner body are of the same kind of a thermoplastic resin.
Claim 9
Dependent Claim
27 words
A pellet as in claim 1, wherein the thermoplastic resin for the outer layer has a melt flow rate not higher than that for the inner body.
Claim 10
Dependent Claim
16 words
A pellet according to claim 1 wherein the glass fiber bundle contains 500 to 2000 filaments.
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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) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |