US4461871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester resinous composition, molded articles and process for preparation thereof
Assignee: Toray Industries Inc
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Filing: 1982-07-21
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Granted: 1984-07-24
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Expires: 2002-07-21
Abstract
Abstract A polyester resinous composition comprising (a) an aromatic polyester, (b) a copolymer of an α-olefin and a glycidyl ester of α,β-ethylenically unsaturated carboxylic acid and (c) an ethylene based copolymer of ethylene and α-olefin having more than three carbon atoms. The composition has highly improved impact strength at low temperature and good flow properties upon injection molding. The composition can be molded to form various articles by conventional molding methods.
Inventors
- 👤 Kiichi Kometani
- 👤 Yoshiyuki Yamamoto
- 👤 Masana Yanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:31
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
79 words
A polyester resinous composition comprising: (a) an aromatic polyester; (b) a copolymer containing glycidyl groups; and (c) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolyermization ratio of ethylene to α-olefin is in a range between 40/60 to 99/1; and wherein components (b) and (c) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a).
Claim 2
Dependent Claim
79 words
A polyester resinous composition comprising: (a) an aromatic polyester; (b) a copolymer containing glycidyl groups; and (c) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolyermization ratio of ethylene to α-olefin is in a range between 40/60 to 99/1; and wherein components (b) and (c) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a).
Claim 3
Dependent Claim
11 words
The composition of claim 1, wherein component (a) is poly(alkylene terephthalate).
Claim 4
Dependent Claim
12 words
The composition of claim 2, wherein the poly(alkylene terephthalate) is poly(butylene terephthalate).
Claim 5
Dependent Claim
38 words
The composition of claim 1, wherein the sum of the amounts of component (b) and component (c) is from about 2 to 50 parts by weight per 100 parts by weight of the aromatic polyester of component (a).
Claim 6
Dependent Claim
28 words
The composition of claim 1, wherein weight ratio of the amount of the component (b) to the component (c) is in a range between about 1/9 to 8/2.
Claim 7
Dependent Claim
22 words
The composition of claim 1, wherein component (b) is a copolymer of an α-olefin and glycidyl ester of α,β-ethylenically unsaturated carboxylic acid.
Claim 8
Dependent Claim
13 words
The composition of claim 6, wherein the α-olefin in component (b) is ethylene.
Claim 9
Dependent Claim
33 words
The composition of claim 6, wherein a glycidyl ester of α,β-ethylenically unsaturated carboxylic acid in the component (b) is a member of the group consisting of a glycidyl methacrylate and a glycidyl acrylate.
Claim 10
Dependent Claim
15 words
The composition of claim 7 or 8, wherein component (b) is an ethylene/glycidyl methacrylate copolymer.
Claim 11
Dependent Claim
23 words
The composition of claim 1, wherein α-olefin in the component (c) is a member of the group consisting of propylene, butene-1 and hexene-1.
Claim 12
Dependent Claim
12 words
The composition of claim 10, wherein component (c) is an ethylene/butene-1 copolymer.
Claim 13
Dependent Claim
30 words
The composition of claim 6, wherein the polymerized amount of the glycidyl ester of α,β-ethylenically unsaturated carboxylic acid in the component (b) ranges from about 1 to 50% by weight.
Claim 14
Dependent Claim
30 words
The composition of claim 6, wherein the copolymerized amount of the glycidyl ester of α,β-ethylenically unsaturated carboxylic acid in the component (b) ranges from about 2 to 20% by weight.
Claim 15
Dependent Claim
23 words
The composition of claim 1, wherein copolymerization ratio of ethylene to α-olefin in the copolymer of component (c) ranges between 70/30 to 95/5.
Claim 16
Dependent Claim
10 words
The composition of claim 1, further comprising fibrous reinforcement material.
Claim 17
Dependent Claim
10 words
The composition of claim 1, further comprising granular reinforcement material.
Claim 18
Dependent Claim
20 words
The composition of claim 15 or 16, wherein the reinforcement material is up to 50% by weight of the composition.
Claim 19
Dependent Claim
33 words
The composition of claim 15 or 16, wherein said reinforcement material is selected from the group consisting of glass fiber, carbon fiber, metal fiber, glass bead, glass flake, wollastonite, mica, talc and clay.
Claim 20
Dependent Claim
39 words
The composition of claim 1, further comprising at least one additive material selected from the group consisting of tertiary amines, phosphites, phosphonium compounds, tertiary phosphines, metal salts of carboxylic acids, metal salts of sulfonic acids and organic sulfate salts.
Claim 21
Dependent Claim
29 words
The composition of claim 19, wherein content of the additive material is from about 0.01 to 5 parts by weight per 100 parts by weight of said aromatic polyester.
Claim 22
Dependent Claim
38 words
The composition of claim 1, further comprising up to 30% by weight, based on weight of the composition, of a halogenated organic compound and up to 20% by weight, based on weight of the composition, of antimony trioxide.
Claim 23
Dependent Claim
16 words
The composition of claim 21, wherein the halogenated organic compound has at least one benzene ring.
Claim 24
Dependent Claim
110 words
A process for preparing a polyester resinous composition comprising: (a) dry blending (i) an aromatic polyester, (ii) a copolymer containing glycidyl groups and (iii) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolyermization ratio of ethylene to α-olefin is in a range between 40/60 to 99/1; and wherein components (ii) and (iii) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a), (b) melt mixing said dry blended components by use of a screw extruder at a temperature above the melting point of said aromatic polyester.
Claim 25
Dependent Claim
110 words
A process for preparing a polyester resinous composition comprising: (a) dry blending (i) an aromatic polyester, (ii) a copolymer containing glycidyl groups and (iii) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolyermization ratio of ethylene to α-olefin is in a range between 40/60 to 99/1; and wherein components (ii) and (iii) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a), (b) melt mixing said dry blended components by use of a screw extruder at a temperature above the melting point of said aromatic polyester.
Claim 26
Dependent Claim
79 words
An injection molded article comprising: (a) an aromatic polyester; (b) a copolymer containing glycidyl groups; and (c) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolymerization ratio of ethylene to α-olefin is in the range between 40/60 to 99/1; and wherein components (b) and (c) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a).
Claim 27
Dependent Claim
79 words
An injection molded article comprising: (a) an aromatic polyester; (b) a copolymer containing glycidyl groups; and (c) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolymerization ratio of ethylene to α-olefin is in the range between 40/60 to 99/1; and wherein components (b) and (c) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a).
Claim 28
Dependent Claim
91 words
An extrusion molded article comprising: (a) an aromatic polyester; (b) a copolymer containing glycidyl groups; and (c) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolymerization ratio of ethylene to α-olefin is in a range between 40/60 to 99/1; and wherein components (b) and (c) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a) in a shape selected from the group consisting of films and rods.
Claim 29
Dependent Claim
91 words
An extrusion molded article comprising: (a) an aromatic polyester; (b) a copolymer containing glycidyl groups; and (c) a copolymer consisting essentially of ethylene and an α-olefin having more than three carbon atoms, wherein the molar copolymerization ratio of ethylene to α-olefin is in a range between 40/60 to 99/1; and wherein components (b) and (c) are each present in an amount from about 1 to 50 parts by weight per 100 parts by weight of said aromatic polyester (a) in a shape selected from the group consisting of films and rods.
References Cited (Backward Citations)
US4246378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |