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US4344874A
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Polyethylene terephthalate resin compositions
Assignee: Teijin Ltd
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Filing: 1981-04-28
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Granted: 1982-08-17
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Expires: 2001-04-28
Abstract
Abstract A polyethylene terephthalate resin composition capable of providing a molded article of a high crystallinity and an excellent dimensional stability and thermal resistance consists essentially of a polyethylene terephthalate resin having an intrinsic viscosity of 0.35 to 0.9 and, per 100 parts by weight of the polyethylene terephthalate resin, 5 to 200 parts by weight of an inorganic filler, 0.01 to 20 parts by weight of dimethyl or diethyl terephthalate and 0.01 to 5 parts by weight of a salt of a carboxylic acid with a metal of Group I or II in the periodic table or 0.1 to 10 parts by weight of an ionic copolymer of an α-olefin with a salt of an α,β-unsaturated carboxylic acid and containing an ion of a metal of Group I or II in the periodic table.
Inventors
- 👤 Noriyuki Akagi
- 👤 Yoshinari Ogawa
- 👤 Kouichi Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K3/00; C08K3/01; C08K3/013; C08K3/34; C08K3/40; C08K5/10; C08K5/12; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
128 words
A polyethylene terephthalate resin composition consisting essentially of (A) a polyethylene terephthalate resin having an intrinsic viscosity of 0.35 to 0.9 as measured in ortho-chlorophenol at 35° C. and, per 100 parts by weight of the polyethylene terephthalate resin, (B) 5 to 200 parts by weight of an inorganic filler, (C) 0.1 to 20 parts by weight of dimethyl terephthalate or diethyl terephthalate and (D) 0.01 to 5 parts by weight of a salt of a carboxylic acid with a metal of Group I or II in the periodic table or 0.1 to 10 parts by weight of an ionic copolymer of an α-olefin with a salt of an α,β-unsaturated carboxylic acid and containing an ion of a metal of Group I or II in the periodic table.
Claim 2
Dependent Claim
128 words
A polyethylene terephthalate resin composition consisting essentially of (A) a polyethylene terephthalate resin having an intrinsic viscosity of 0.35 to 0.9 as measured in ortho-chlorophenol at 35° C. and, per 100 parts by weight of the polyethylene terephthalate resin, (B) 5 to 200 parts by weight of an inorganic filler, (C) 0.1 to 20 parts by weight of dimethyl terephthalate or diethyl terephthalate and (D) 0.01 to 5 parts by weight of a salt of a carboxylic acid with a metal of Group I or II in the periodic table or 0.1 to 10 parts by weight of an ionic copolymer of an α-olefin with a salt of an α,β-unsaturated carboxylic acid and containing an ion of a metal of Group I or II in the periodic table.
Claim 3
Dependent Claim
34 words
A composition as claimed in claim 1, wherein the (B) component is selected from glass fiber, asbestos, carbon fiber, potassium titanate fiber, mica, silica, talc, calcium carbonate, glass bead, glass flakes, clay and wollastonite.
Claim 4
Dependent Claim
33 words
A composition as claimed in claim 1, wherein the (C) component is continued in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the polyethylene terephthalate resin.
Claim 5
Dependent Claim
29 words
A compound as claimed in claim 1, wherein the (D) component is selected from salts of carboxylic acids with metals of Groups I and II in the periodic table.
Claim 6
Dependent Claim
37 words
A composition as claimed in claim 4, wherein the (D) component is selected from salts of metals of Groups I and II in the periodic table with aliphatic monocarboxylic acids, aliphatic monocarboxylic acids, and aromatic carboxylic acids.
Claim 7
Dependent Claim
36 words
A composition as claimed in claim 5, wherein the aliphatic monocarboxylic acid is selected from acetic acid, propionic acid, caproic acid, palmitic acid, stearic acid, oleic acid, behenic acid, montanic acid, methacrylic acid and acrylic acid.
Claim 8
Dependent Claim
28 words
A composition as claimed in claim 5, wherein the aliphatic dicarboxylic acid is selected from oxalic acid, adipic acid, succinic acid, sebacic acid, maleic acid and fumaric acid.
Claim 9
Dependent Claim
22 words
A composition as claimed in claim 5, wherein the aromatic carboxylic acid is selected from benzoic acid, terephathalic acid and phthalic acid.
Claim 10
Dependent Claim
33 words
A composition as claimed in claim 4, wherein the (D) component is contained in an amount of 0.05 to 3 parts by weight per 100 parts by weight of the polyethylene terephthalate resin.
Claim 11
Dependent Claim
41 words
A composition as claim in claim 1, wherein the (D) component is selected from ionic copolymers of an α-olefin with an α,β-unsaturated carboxylic acid salt and containing an ion of a metal of Groups I or II in the periodic table.
Claim 12
Dependent Claim
82 words
A composition as claimed in claim 10, wherein the ionic copolymer is selected from those having the units of the following structural formula, ##STR3## in which R 1 is hydrogen, alkyl of 1 to 12 carbon atoms or phenyl, R 2 is hydrogen, methyl or ethyl, M e is a metal atom of Group I or II in the periodic table, x and y are each independently an integer of 1 to 100, and n is an integer of 10 to 10,000.
Claim 13
Dependent Claim
24 words
A composition as claimed in claim 10, wherein the ionic copolymer is selected from those of an α-olefin and an α,β-unsaturated dicarboxylic acid salt.
Claim 14
Dependent Claim
31 words
A composition as claimed in claim 10, wherein the ionic copolymer is selected from those having an α,β-unsaturated carboxylic acid ester chain grafted and then reacted with an alkali metal hydroxide.
Claim 15
Dependent Claim
73 words
A composition as claimed in claim 10, wherein the ionic copolymer is selected from those having the following units (a), (b) and (c), ##STR4## in which R 1 , R 2 and M e are as defined in claim 9, R 3 is hydrogen, methyl or ethyl, R 4 is hydrogen or alkyl of 1 to 12 carbon atoms, and x, y and z are each independently an integer of 1 to 100.
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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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |