Title:
PELLETS CONTAINING BLOCK COPOLYMER AND MOLDED ARTICLE OBTAINED FROM SAID PELLETS
Document Type and Number:
WIPO Patent Application WO/2020/075655
Kind Code:
A1
Abstract:
Provided are: pellets that contain an acrylic block copolymer having a polymer block containing a methyl acrylate unit, and that are sufficiently prevented from adhering to each other; and a molded article which is produced from the pellets with high efficiency, and in which excellent characteristics possessed by the acrylic block copolymer are not impaired. The pellets each comprise: an acrylic block copolymer (I) having at least one polymer block (A1) containing a methacrylic acid ester unit and at least one polymer block (B1) containing an acrylic acid ester unit; and an acrylic polymer (II) containing 35 mass% or more of a methyl methacrylate unit and having a melt flow rate (MFR) of 10 g/10 min or more at 230°C with a load of 3.8 kg, wherein the acrylic acid ester unit contained in the polymer block (B1) of the acrylic block copolymer (I) consists only of a methyl acrylate unit and an acrylic acid ester (1) unit represented by general formula CH2=CH-COOR1 (1) (in the formula, R1 represents an organic group having 4-12 carbon atoms), and the mass ratio (I)/(II) of the acrylic block copolymer (I) and the acrylic polymer (II) is 90/10 to 40/60.
Inventors:
KAWAHARA MOE (JP)
AKAI MAKOTO (JP)
NAKADA KANAYO (JP)
ONO TOMOHIRO (JP)
AKAI MAKOTO (JP)
NAKADA KANAYO (JP)
ONO TOMOHIRO (JP)
Application Number:
PCT/JP2019/039382
Publication Date:
April 16, 2020
Filing Date:
October 04, 2019
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08L53/00; C08F297/02; C08L33/04
Domestic Patent References:
| WO2013183567A1 | 2013-12-12 | |||
| WO2016190138A1 | 2016-12-01 | |||
| WO2017179415A1 | 2017-10-19 | |||
| WO2007060930A1 | 2007-05-31 | |||
| WO2017179479A1 | 2017-10-19 | |||
| WO2016175119A1 | 2016-11-03 |
Foreign References:
| JP2015116693A | 2015-06-25 | |||
| JP2012207155A | 2012-10-25 | |||
| JP2012213912A | 2012-11-08 | |||
| JP2013039287A | 2013-02-28 | |||
| JP2017145315A | 2017-08-24 | |||
| JP2017179231A | 2017-10-05 | |||
| JP2003253005A | 2003-09-10 | |||
| JPH11335432A | 1999-12-07 | |||
| JPH0725859B2 | 1995-03-22 | |||
| JPH0693060A | 1994-04-05 |
Other References:
MACROMOL. CHEM. PHYS., vol. 201, 2000, pages 1108 - 1114
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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