US 2002/0055592 A1Published application

Thermoplastic resin composition

AssigneeSumitomo Chemical Company, Limited

InventorsHirofumi Johoji, Hidetake Hozumi, Tadaaki Nishiyama

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Abstract

There is disclosed a thermoplastic resin composition comprising: (A) 5 to 95% by weight of a thermoplastic resin having a melt flow rate of from 0.001 to 100 g/10 min. and a die swell ratio of not less than 1.7, and (B) 95 to 5% by weight of an olefin polymer satisfying the following formula (1), Ua≦1.5×Sa×(Ta/100)3.3 (1) wherein (i) Ua is a flexural modulus of a resin opposition for evaluation composed of 50 parts by weight of said olefin polymer and 50 parts by weight of a specific homopolypropylene resin, (ii) Sa is a flexural modulus of said homopolypropylene resin, and (iii) Ta is a containing ratio of said homopolypropylene resin in the resin composition for evaluation, provided that the sum of the component (A) and the component (B) is 100% by weight.

Claims10

Dependent claims

A thermoplastic resin composition comprising:

(A) 5 to 95% by weight of a thermoplastic resin having a melt flow rate of from 0.001 to 100 g/10 min. measured at a temperature of 230° C. under a load of 2.16 kg and a die swell ratio of not less than 1.7, and
(B) 95 to 5% by weight of an olefin polymer satisfying the following formula (1),
Ua≦1.5×Sa×(Ta/100)3.3 (1)
wherein:
(i) Ua is a flexural modulus (MPa) of a resin composition for evaluation measured according to JIS K7203, which composition is composed of 50 parts by weight of said olefin polymer and 50 parts by weight of a homopolypropylene resin having a flexural modulus (Sa) of 1400±100 MPa measured according to JIS K7203, a melt flow rate of 12±3 g/10 min. measured at a temperature of 230° C. under a load of 2.16 kg and a peak position (melting point) on crystal melting of 162±2° C. measured by a differential scanning calorimeter (DSC) according to JIS K7122,
(ii) Sa is a flexural modulus (MPa) of said homopolypropylene resin measured according to JIS K7203, and
(iii) Ta is a containing ratio (50% by weight) of said homopolypropylene resin in the resin composition for evaluation, provided that the sum of the component (A) and the component (B) is 100% by weight.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/915,560Filed 27 Jul 2001
Priority: JP 2000-2728698 Sep 2000
Published: 9 May 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

C08L 23/0815
With unsaturated hydrocarbons only containing four or more carbon atoms: with aliphatic 1-olefins containing one carbon-to-carbon double bond
C08L 23/10
Not modified by chemical after-treatment: homopolymers or copolymers of propene
C08L 53/00
Compositions of block copolymers containing at least one sequence of a polymer
C08L 2314/06
Polymer mixtures characterised by way of preparation: metallocene or single site catalysts

Family

US 6,525,138 B2Related patent
US 2002/0055592 A1This patent

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