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US 12,077,625 B2Granted
Pellets including block copolymer and shaped articles obtained from such pellets
AssigneeKuraray Co., Ltd.
InventorsMoe Kawahara, Makoto Akai, Kanayo Nakada, Tomohiro Ono
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Abstract
Pellets of an acrylic block copolymer (I) having a polymer block (A1) containing methacrylic acid ester units and a polymer block (B1) containing acrylic acid ester units, and an acrylic polymer (II) having 35 mass % or more methyl methacrylate units are provided. The polymer block (B1) is made of methyl acrylate units and acrylic acid ester units of formula CH2═CH—COOR1 (1), wherein R1 represents a C4-C12 alkyl group. A shaped article prepared with the pellets is also provided.
Claims4
Pellets, comprising:
- an acrylic block copolymer (I) comprising a polymer block (A1) comprising methacrylic acid ester units and a polymer block (B1) comprising acrylic acid ester units, and
- an acrylic polymer (II) comprising 35 mass % or more methyl methacrylate units and having a melt flow rate (MFR) measured at 230° C. under 3.8 kg load of not less than 10 g/10 min,
- wherein
- the acrylic acid ester units present in the polymer block (B1) of the acrylic block copolymer (I) consist of methyl acrylate units and acrylic acid ester units of formula CH2═CH—COOR1 (1), wherein R1 represents a C4-C12 alkyl group,
- and
- a mass ratio (I)/(II) of the acrylic block copolymer (I) to the acrylic polymer (II) is from 90/10 to 40/60.
3 more elements
Dependencies are inferred from the claim text.