Patent US1041177A successfully refreshed from Google Patents.
EP0057415A2
Expired / Lapsed
EP
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Polyester resin composition
Assignee: Teijin Ltd
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Filing: 1982-01-27
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Granted: —
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Expires: 2002-01-27
Abstract
Abstract A polyester resin composition having an excellent molding mobility and crystallizing property, comprises (A) at least one thermoplastic polyester resin selected from polyethylene terephthalate resins and polybutylene terephthalate resins; (B) a polycaprolactone having a. number average molecular weight of from 200 to 20,000 in an amount of 0.1 to 30 parts by weight per 100 parts by weight of the polyester resin, in which polycaprolactone molecules, at least a portion of the terminal radicals thereof, may be modified to be non-reactive, and, optionally, (C) at least one additive selected from filler, crystal nucleating agents, and specific phosphorous compounds which may be in combination with a specific epoxy compound, the polyester resin composition being useful for producing a molded product having an excellent dimensional stability and mechanical strength.
Inventors
- 👤 Yoshinari Ogawa
- 👤 Noriyuki Akagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 09:07
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/02; C08K3/04; C08K3/18; C08K3/24; C08K3/26; C08K3/34; C08K3/40; C08K5/00; C08K5/04; C08K5/15; C08K5/49; C08K5/0008; C08K5/0083; C08L67/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A polyester resin composition comprising: (A) at least one thermoplastic polyester resin selected from the group consisting of polyethylene terephthalate resins and polybutylene terephthalate resins; and (B) per 100 parts by weight of said polyester resin, 0.1 to 30 parts by weight of a polycaprolactone having a number average molecular weight of from 200 to 20,000, in which polycaprolactone molecules, at least a portion of the terminal radicals thereof may be modified to be non-reactive.
Claim 2
Dependent Claim
75 words
A polyester resin composition comprising: (A) at least one thermoplastic polyester resin selected from the group consisting of polyethylene terephthalate resins and polybutylene terephthalate resins; and (B) per 100 parts by weight of said polyester resin, 0.1 to 30 parts by weight of a polycaprolactone having a number average molecular weight of from 200 to 20,000, in which polycaprolactone molecules, at least a portion of the terminal radicals thereof may be modified to be non-reactive.
Claim 3
Dependent Claim
31 words
A polyester resin composition as claimed in claim 1, wherein said polyethylene terephthalate resin has an intrinsic viscosity of from 0.35 or more determined in ortho-chlorophenol at a temperature of 35°C.
Claim 4
Dependent Claim
31 words
A polyester resin composition as claimed in claim 1, wherein said polybutylene terephthalate resin has an intrinsic viscosity of from 0.4 to 1.5 determined in orthochlorophenol at a temperature of 35°C.
Claim 5
Dependent Claim
38 words
A polyester resin composition as claimed in claim 1, wherein said polyester resin (A) is a mixture of 5 to 95% by weight of at least one polyethylene terephthalate and 5 to 95% by weight of polybutylene terephthalate.
Claim 6
Dependent Claim
38 words
A polyester resin composition as claimed in claim 1, wherein the number of said modified terminal radicals in the polycaprolactone molecules corresponds to 50% or more of the entire number of the terminal radicals in the polycaprolactone molecules.
Claim 7
Dependent Claim
120 words
A polyester resin composition as claimed in claim 1, wherein the polycaprolactone molecules having the modified terminal groups thereof, are of the formula (I) [R 1 CO(O(CH 2 ) 5 CO) n O] m R[CO-O-CH 2 ) 5 CO) p OR 2 ] q (I) wherein n and p respectively represent, independently from each other, an integer of 2 or more; m and q respectively represent, independently from each other, zero or an integer of from l to 4, the sum of m-and q being 1 or more; R represents an organic radical having a valence corresponding to the sum of m and q; and R 1 and R 2 respectively represent, independently from each other, a monovalent organic radical.
Claim 8
Dependent Claim
31 words
A polyester resin composition as claimed in claim 1, which additionally contains 200 parts by weight or less of an inorganic filler, per 100 parts by weight of said polyester resin.
Claim 9
Dependent Claim
52 words
A polyester resin composition as claimed in claim 7, wherein said inorganic filler comprises at least one member selected from the group consisting of glass fibers, asbestos, carbon fibers, potassium titanate fibers, and mica, silica, talc, calcium carbonate, glasses, clay and wollastonite in the forms of particles, grains, flakes and small plates.
Claim 10
Dependent Claim
37 words
. A polyester resin composition as claimed in claim 1, which additionally contains 10 parts by weight or less of a crystal nucleating agent for said polyester resin, per 100 parts by weight of said polyester resin.
Claim 11
Dependent Claim
63 words
A polyester resin composition as claimed in claim 9, wherein said crystal nucleating agent comprises at least one member selected from the group consisting of salts of carboxylic acids with metals of Groups I and II in the periodic table, talc and ionic copolymers of a-olefins with salts of α,β-unsaturated carboxylic acid with metals of Group I and II in the periodic table.
Claim 12
Dependent Claim
94 words
A polyester resin composition as claimed in claim 1, which additionally contains, per 100 parts by weight of said polyester resin, 0.01 to 2 parts by weight or less of at least one phosphorus compound selected from those of the formulae (II) and, (III): and wherein X, Y and Z respectively represent, independently from each other, a member selected from the group' consisting of a hydrogen atom, monovalent hydrocarbon radicals and radicals of the formula -O R 3 in which R 3 represents a member selected from a hydrogen atom and monovalent hydrocarbon radicals.
Claim 13
Dependent Claim
36 words
A polyester resin composition as claimed in claim 11, wherein said monovalent hydrocarbon radicals represented by R 3 are selected from substituted and unsubstituted alkyl, aralkyl and aryl radicals each having 12 carbon atoms or less.
Claim 14
Dependent Claim
38 words
A polyester resin composition as claimed in claim 11, wherein said monovalent hydrocarbon radicals represented by X, Y and/or Z are selected from substituted and unsubstituted alkyl, aralkyl and aryl radicals each having 12 carbon atoms or less.
Claim 15
Dependent Claim
61 words
A polyester resin composition as claimed in claim 11, which additionally contains, per 100 parts by weight of said polyester resin, 3 parts by weight or less of at least one epoxy compound selected from those of the formula (IV): wherein r represents an integer of 2 or more and R represents a r-valent hydrocarbon radicals together with said phosphorus compound.
Claim 16
Dependent Claim
46 words
A polyester resin composition as claimed in claim 14, wherein said hydrocarbon radical represented by R 4 is selected from alkylene radicals having 1 to 16 carbon atoms, cyclic alkylene radicals having 5 to 16 carbon atoms, phenylene, naphthylene, methylphenylene, and aromatic radicals of the formulae:
References Cited (Backward Citations)
No citation records indexed.
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