Patent US1936243A successfully refreshed from Google Patents.
US4792587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition which exhibits anisotropism when melted
Assignee: Polyplastics Co Ltd
•
Filing: 1987-03-16
•
Granted: 1988-12-20
•
Expires: 2007-03-16
Abstract
Abstract A resin composition of the invention, exhibiting the anisotropism when melted, comprises (1) a resin having rigid structure and exhibiting the anisotropism when melted and (2) a resin having a rigid structure portion and a soft structure portion, both resins having been uniformly mixed with each other.
Inventors
- 👤 Toshio Kanoe
- 👤 Tsuneyoshi Okada
- 👤 Kenji Hijikata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:12
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; C09K19/3809; C08; C08L; C08L101/00; C08L67/00; C08L85/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
135 words
A resin composition which exhibits anisotropism when melted, comprising two components uniformly mixed with each other which following injection molding is capable of exhibiting a tensile strength and a flexural strength which exceeds that of each of the two components when separately injection molded, the first component being a resin which has no flexible skeleton and a rigid skeleton selected from the group consisting of polyester, polyesteramide, polyamide, polyazomethine, polyurethane, polysiloxane, and polyphosphazene, and mixtures of the foregoing, and exhibits anisotropism when melted, and the second component being a resin which has a rigid skeleton selected from the group consisting of polyester, polyesteramide, polyamide, polyazomethine, polyurethane, polysiloxane, and polyphosphazene, and mixtures of the foregoing, and a flexible skeleton selected from the group consisting of polyarylate, polyalkylene terephthalate, polycarbonate, polyethersulfone, polyacrylate, and mixtures of the foregoing.
Claim 2
Dependent Claim
135 words
A resin composition which exhibits anisotropism when melted, comprising two components uniformly mixed with each other which following injection molding is capable of exhibiting a tensile strength and a flexural strength which exceeds that of each of the two components when separately injection molded, the first component being a resin which has no flexible skeleton and a rigid skeleton selected from the group consisting of polyester, polyesteramide, polyamide, polyazomethine, polyurethane, polysiloxane, and polyphosphazene, and mixtures of the foregoing, and exhibits anisotropism when melted, and the second component being a resin which has a rigid skeleton selected from the group consisting of polyester, polyesteramide, polyamide, polyazomethine, polyurethane, polysiloxane, and polyphosphazene, and mixtures of the foregoing, and a flexible skeleton selected from the group consisting of polyarylate, polyalkylene terephthalate, polycarbonate, polyethersulfone, polyacrylate, and mixtures of the foregoing.
Claim 3
Dependent Claim
21 words
A resin composition as set forth in claim 1, wherein the second component is a resin which exhibits anisotropism when melted.
Claim 4
Dependent Claim
31 words
A resin composition as set forth in claim 1, wherein the starting materials which constitute the rigid skeleton of the first and second components include at least one compound in common.
Claim 5
Dependent Claim
44 words
A resin composition as set forth in claim 1, wherein the rigid skeleton is composed of one or more kinds of compounds selected from polyester, polyesteramide, and polyamide, and the rigid skeleton per se is a segment which exhibits the properties of liquid crystal.
Claim 6
Dependent Claim
27 words
A resin composition as set forth in claim 1, wherein the rigid skeleton per se is composed of a polyester which exhibits the properties of liquid crystal.
Claim 7
Dependent Claim
40 words
A resin composition as set forth in claim 1, wherein the rigid skeleton is a segment composed mainly of one or more kinds selected from hydroxybenzoic acid residue, naphthalene residue, biphenyl residue, aminophenyl residue, terephthalic acid residue, andd hydroquinone residue.
Claim 8
Dependent Claim
25 words
A resin composition as set forth in claim 1, wherein the rigid skeleton is a segment composed mainly of hydroxybenzoic acid residue and/or naphthalene residue.
Claim 9
Dependent Claim
20 words
A resin composition as set forth in claim 1, wherein the first component is a polymer containing a naphthalene residue.
Claim 10
Dependent Claim
18 words
A resin composition as set forth in claim 8, wherein the naphthalene residue is a hydroxynaphthoic acid residue.
Claim 11
Dependent Claim
19 words
A resin composition as set forth in claim 9, wherein the hydroxynaphthoic acid residue is a 2-hydroxy-6-naphthoic acid residue.
Claim 12
Dependent Claim
26 words
A resin composition as set forth in claim 1, wherein the first component is composed mainly of a hydroxybenzoic acid residue and a hydroxynaphthoic acid residue.
Claim 13
Dependent Claim
26 words
A resin composition as set forth in claim 1, wherein the first component is a polymer composed mainly of a hydroxynaphthoic acid and an aminophenol residue.
Claim 14
Dependent Claim
22 words
A resin composition as set forth in claim 1, wherein the flexible skeleton of the second component is composed of polyalkylene terephthalate.
Claim 15
Dependent Claim
22 words
A resin composition as set forth in claim 13, wherein the alkylene in the polyalkylene terephthalate has 2 to 5 carbon atoms.
Claim 16
Dependent Claim
20 words
A resin composition as set forth in claim 1, which further comprises a third component which is a thermoplastic polymer.
Claim 17
Dependent Claim
34 words
A resin composition as set forth in claim 15, wherein the thermoplastic polymer is one or more kinds selected from the group consisting of non-crystalline aromatic polyester, polyalkylene terephthalate, polycarbonate, polyether sulfone, and polyacrylate.
Claim 18
Dependent Claim
27 words
A resin composition as set forth in claim 15, wherein the thermoplastic polymer is one or more polyester polymers selected from non-crystalline aromatic polyester and polyalkylene terephthalate.
Claim 19
Dependent Claim
16 words
A resin composition as set forth in claim 15, wherein the thermoplastic polymer is polyalkylene terephthalate.
Claim 20
Dependent Claim
27 words
A resin composition as set forth in any of claims 16 to 18, wherein the alkyl group of the polyalkylene terephthalate contains 2 to 5 carbon atoms.
Claim 21
Dependent Claim
37 words
A resin composition as set forth in claim 1, wherein the first component accounts for 95 to 5 wt% of the total weight and the second component accounts for 95 to 5 wt% of the total weight.
References Cited (Backward Citations)
US3778410A
Cited
US4161470A
Cited
US4228218A
Cited
US4386174A
Cited
US4438236A
Cited
US4489190A
Cited
US4460736A
Cited
US4267289A
Cited
US4460735A
Cited
US4276397A
Cited
US4429078A
Cited
US4408022A
Cited
US4451611A
Cited
US4567227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |