EP0185103A1
Expired / Lapsed
EP
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Flexible thermoplastic polyester compositions
Assignee: General Electric Co
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Filing: 1984-12-13
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Granted: —
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Expires: 2004-12-13
Abstract
Abstract New and improved flexible thermoplastic polyester compositions are disclosed having a flexural modulus of not substantially greater than about 140,000 psi (96.5 daN/m M 2 ), which are useful for forming flexible shaped articles such as hoses, tubings, wire coatings, cable jacketing and the like. The compositions comprise (a) a substantially crystalline thermoplastic linear polyester resin composition and (b) an amount of an amorphous copolymer resin effective to reduce the flexural modulus of (a) to not substantially greater than about 140,000 psi (96.5 daN/mm 2 ). In an alternate embodiment ultra-low modulus thermoplastic polyester compositions are provided which additionally comprise (c) a minor effective amount of an enhancing agent capable of further reducing the flexural modulus of (a) plus (b) to not substantially greater than about 70,000 psi (48.26 daN/mm 2 ). It is disclosed that fillers, reinforcements and flame retardant agents may be incorporated into the ultra-low modulus compositions to provide filled, reinforced or flame retardant flexible thermoplastic polyester compositions having flexural moduli which are still not substantially greater than about 140,000 psi (96.5 daN/mm 2 ).
Inventors
- 👤 Hukamchand Agarwal Surendra
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/49; C08K5/51; C08K5/52; C08L33/00; C08L33/04; C08L33/06; C08L51/00; C08L51/003; C08L51/04; C08L69/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
54 words
A low modulus, flexible thermoplastic molding and extrusion composition comprising: (a) a substantially crystalline linear thermoplastic polyester resin composition; and (b) an amount of a component capable of reducing a flexural modulus of (a) to not substantially greater than about 140,000 psi (96.5 daN/mm 2 ), said component comprising a substantially amorphous copolymer resin.
Claim 2
Dependent Claim
54 words
A low modulus, flexible thermoplastic molding and extrusion composition comprising: (a) a substantially crystalline linear thermoplastic polyester resin composition; and (b) an amount of a component capable of reducing a flexural modulus of (a) to not substantially greater than about 140,000 psi (96.5 daN/mm 2 ), said component comprising a substantially amorphous copolymer resin.
Claim 3
Dependent Claim
44 words
A flexible thermoplastic composition as recited in Claim 1, wherein component (a) comprises from about 15 to about 55 parts by weight and component (b) comprises from 35 to about 85 parts by weight, based upon the total weight of (a) and (b) combined.
Claim 4
Dependent Claim
29 words
A flexible thermoplastic composition as recited in Claim 1, wherein the overall composition has a flexural modulus of not substantially greater than about 120,000 psi (82.73 daN/mm 2 ).
Claim 5
Dependent Claim
32 words
A flexible thermoplastic composition as recited in Claim 1, wherein the overall composition has a flexural modulus of not substantially greater than about 100,000 psi (68.9 da N/ m m 2 ).
Claim 6
Dependent Claim
53 words
A flexible thermoplastic composition as recited in Claim 1, wherein the substantially crystalline thermoplastic linear polyester resin composition, component (a), comprises: (i) a poly (alkylene terephthalate) resin; (ii) a blend of a poly (1,4-butylene terephthalate) resin and a poly (ethylene terephthalate) resin; or (iii) a blend of (i) and an aromatic polycarbonate resin.
Claim 7
Dependent Claim
17 words
A flexible thermoplastic composition as recited in Claim 1, wherein component (a) comprises a polyalkylene terephthalate resin.
Claim 8
Dependent Claim
18 words
A flexible thermoplastic composition as recited in Claim 1, wherein component (a) comprises a poly (1,4-butylene terephthalate) resin.
Claim 9
Dependent Claim
24 words
A flexible thermoplastic composition as recited in Claim 1, wherein component (a) comprises a blend of polyalkylene terephthalate resin and an aromatic polycarbonate resin.
Claim 10
Dependent Claim
32 words
A flexible thermoplastic composition as recited in Claim 8, wherein said aromatic polycarbonate resin comprises recurring structural units of the formula: wherein A is a divalent aromatic radical of a dihydric phenol.
Claim 11
Dependent Claim
22 words
A flexible thermoplastic composition as recited in Claim 9, wherein in said formula, A is derived from a 4,4'-dihydroxy-di (mononuclear aryl) alkane.
Claim 12
Dependent Claim
19 words
ll. A flexible thermoplastsic composition as recited in Claim 8, wherein said aromatic polycarbonate resin comprises poly (2,2-dihydroxydiphenylpropane) carbonate.
Claim 13
Dependent Claim
66 words
A flexible thermoplastic polyester composition as recited in Claim 1, wherein the substantially amorphous copolymer resin, component (b), is selected from: (i) an acrylate-based core-shell multiphase composite interpolymer resin; (ii) a butadiene-based core-shell multiphase composite interpolymer resin; (iii) a terpolymer derived from a C 1 -C 6 alkyl acrylate, a Cl-C6 alkyl methacrylate and a monoalkenyl aromatic compound; or (iv) mixtures of any of (i)-(iii) above.
Claim 14
Dependent Claim
64 words
A flexible thermoplastic composition as recited in Claim 1, wherein amorphous copolymer resin (b) comprises (i) an acrylate-based core-shell multiphase composite interpolymer resin comprising a first elastomeric core stage of a C l -C 6 alkyl acrylate, a crosslinking monomer and a graft-linking monomer and a rigid thermoplastic final or shell stage comprising at least about 50% by weight of a Cl-C6 alkyl methacrylate.
Claim 15
Dependent Claim
46 words
A flexible thermoplastic composition as recited in Claim 13, wherein said acrylate-based core-shell multiphase composite interpolymer resin comprises a first elastomeric core phase of n-butyl acrylate with a ;butylene diacrylate crosslinking monomer and an allyl methacrylate graft-linking monomer and a hard shell phase of methyl methacrylate.
Claim 16
Dependent Claim
22 words
A flexible thermoplastic composition as recited in Claim 1, wherein amorphous copolymer resin (b) comprises a butadiene-based core-shell multiphase composite interpolymer resin.
Claim 17
Dependent Claim
45 words
A flexible thermoplastic composition as recited in Claim 15, wherein said butadiene-based core-shell multiphase composite interpolymer resin comprises a core phase comprising a butadiene-styrene copolymer, an intermediate phase comprising polymerized styrene and a shell phase comprising methyl methacrylate and 1,3-butylene glycol dimethacrylate as a cross-linker.
Claim 18
Dependent Claim
86 words
A flexible thermoplastic composition as recited in Claim 15, wherein said butadiene-based core-shell multiphase composite interpolymer comprises a core phase polymerized from 71 parts by weight butadiene, 3 parts by weight styrene, 4 parts by weight methyl methacrylate and 1 part by weight divinyl benzene; a second intermediate phase polymerized from 11 parts by weight styrene; and a shell phase polymerized from 11 parts by weight methyl methacrylate and 0.1 parts by weight 1,3-butylene glycol dimethacrylate, based upon the total weight of the butadiene-based core-shell interpolymer.
Claim 19
Dependent Claim
39 words
A flexible thermoplastic composition as recited in Claim 1, wherein amorphous copolymer resin, component (b), comprises a terpolymer derived from a C 1 -C 6 alkyl acrylate, a C l -C 6 alkyl methacrylate, and a monoalkenyl aromatic compound.
Claim 20
Dependent Claim
22 words
A flexible thermoplastic composition as recited in Claim 18, wherein component (b) comprises a terpolymer of n-butyl acrylate, methyl methacrylate and styrene.
Claim 21
Dependent Claim
102 words
An ultra-low modulus, flexible thermoplastic molding and extrusion composition comprising: (a) a substantially crystalline thermoplastic linear polyester resin; (b) an amount of a component capable of reducing the flexural modulus of (a) to not substantially greater than about 140,000 psi (96.5 daN/mm 2 ), said component comprising an amorphous copolymer resin; and (c) a minor effective amount of an enhancing agent capable of further reducing the flexural modulus of (a) plus (b) to not substantially greater than about 70,000 psi (48.26 daN/mm 2 ), said enhancing agent being an organic compound selected from: (i) o,p-toluene sulfonamides; (ii) N-alkyl toluenesulfonamides, or (iii) triarylphosphates.
Claim 22
Dependent Claim
102 words
An ultra-low modulus, flexible thermoplastic molding and extrusion composition comprising: (a) a substantially crystalline thermoplastic linear polyester resin; (b) an amount of a component capable of reducing the flexural modulus of (a) to not substantially greater than about 140,000 psi (96.5 daN/mm 2 ), said component comprising an amorphous copolymer resin; and (c) a minor effective amount of an enhancing agent capable of further reducing the flexural modulus of (a) plus (b) to not substantially greater than about 70,000 psi (48.26 daN/mm 2 ), said enhancing agent being an organic compound selected from: (i) o,p-toluene sulfonamides; (ii) N-alkyl toluenesulfonamides, or (iii) triarylphosphates.
Claim 23
Dependent Claim
64 words
An ultra-low modulus thermoplastic composition as recited in Claim 20 further comprising (d) an additive selected from the group consisting of: (i) mineral fillers selected from clay, mica, talc and mixtures of any of said fillers; (ii) glass fiber reinforcing agents; (iii) flame retardant agents alone or in combination with a synergist compound; and (iv) mixtures of any of (i), (ii), or (iii) above.
References Cited (Backward Citations)
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