Acrylic block copolymer, resin composition and shaped article including the same, and optical component
US-2018112023-A1 · Apr 26, 2018 · US
Pellets including block copolymer and shaped articles obtained from such pellets
US2021347931A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021347931-A1 |
| Application number | US-201917283191-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 4, 2019 |
| Priority date | Oct 10, 2018 |
| Publication date | Nov 11, 2021 |
| Grant date | — |
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- Title
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Abstract
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Sufficiently antiblock pellets are provided that include an acrylic block copolymer which has a polymer block including methyl acrylate units. A shaped article is provided from the pellets with high productivity while avoiding deterioration in the outstanding characteristics of the acrylic block copolymer. The pellets include an acrylic block copolymer (I) including at least one polymer block (A1) including methacrylic acid ester units, and at least one polymer block (B1) including acrylic acid ester units, and an acrylic polymer (II) containing 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. The acrylic acid ester units present in the polymer block (B1) of the acrylic block copolymer (I) consist solely of methyl acrylate units and acrylic acid ester (1) units represented by the general formula CH2═CH—COOR1 (1) (wherein R1 represents a C4-C12 organic group). The mass ratio (I)/(II) of the acrylic block copolymer (I) to the acrylic polymer (II) is 90/10 to 40/60.
First claim
Opening claim text (preview).
1 . 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 solely of methyl acrylate units and acrylic acid ester units formula CH 2 ═CH—COOR 1 (1), wherein R 1 represents a C4-C12 organic 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. 2 . The pellets of claim 1 , further comprising 200 to 2000 ppm of an antiblocking agent. 3 . A shaped article obtained by shaping the pellets of claim 1 .
Assignees
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Classifications
containing two or more polymers of the same C08L -group · CPC title
Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title
modified · CPC title
- C08L53/00Primary
Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers · CPC title
polymerising acrylic acid, methacrylic acid or derivatives thereof · CPC title
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- What does patent US2021347931A1 cover?
- Sufficiently antiblock pellets are provided that include an acrylic block copolymer which has a polymer block including methyl acrylate units. A shaped article is provided from the pellets with high productivity while avoiding deterioration in the outstanding characteristics of the acrylic block copolymer. The pellets include an acrylic block copolymer (I) including at least one polymer block (…
- Who is the assignee on this patent?
- Kuraray Co
- What technology area does this patent fall under?
- Primary CPC classification C08L53/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Nov 11 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).