JP2011105935A5

JP2011105935A5 - Acrylic resin and molded body

Info

Publication number: JP2011105935A5
Application number: JP2010237540A
Authority: JP
Filing date: 2010-10-22
Publication date: 2012-10-11
Anticipated expiration: 2030-10-22

Description

本発明は、アクリル系樹脂、及び前記アクリル系樹脂を用いた成形体に関する。 The present invention relates to a molded body using the acrylic resins, and the acrylic resin.

〔１〕
ＪＩＳ−Ｚ８８０１に基づく篩を用いて篩い分けを行ったときの、
５００μｍ以上の粒子径の粒子の重量平均分子量（Ａ）と、
３５５μｍ〜３００μｍの粒子径の粒子の重量平均分子量（Ｂ）と、
１５０μｍ以下の粒子径の粒子の重量平均分子量（Ｃ）と、
において、下記関係式（１）、（２）を満たすアクリル系樹脂。
０≦｜[（Ａ）−（Ｂ）]／（Ｂ）｜×１００（％）≦１０・・・（１）
０≦｜[（Ｃ）−（Ｂ）]／（Ｂ）｜×１００（％）≦１０・・・（２）
〔２〕
メタクリル酸エステル単量体単位８０〜９９．５質量％、及び少なくとも１種のメタク
リル酸エステルに共重合可能な他のビニル単量体単位０．５〜２０質量％を含むアクリル
系樹脂であって、
ゲルパーミエーションクロマトグラフィ（ＧＰＣ）で測定した重量平均分子量が６万〜
３０万であり、
ＧＰＣ溶出曲線から得られるピーク分子量（Ｍｐ）の１／５以下の分子量成分が、前記
ＧＰＣ溶出曲線から得られるエリア面積比率にして７〜４０％含まれている前記〔１〕に
記載のアクリル系樹脂。
〔３〕
平均粒子径が１００〜５００μｍである前記〔１〕又は〔２〕に記載のアクリル系樹脂
。
〔４〕
前記〔１〕乃至〔３〕のいずれか一に記載のアクリル系樹脂を成形することにより得られる成形体。
〔５〕
車両用部品である前記〔４〕に記載の成形体。 [1]
When sieving using a sieve based on JIS-Z8801,
A weight average molecular weight (A) of particles having a particle diameter of 500 μm or more;
A weight average molecular weight (B) of particles having a particle diameter of 355 μm to 300 μm;
A weight average molecular weight (C) of particles having a particle diameter of 150 μm or less;
And an acrylic resin that satisfies the following relational expressions (1) and (2).
0 ≦ | [(A) − (B)] / (B) | × 100 (%) ≦ 10 (1)
0 ≦ | [(C) − (B)] / (B) | × 100 (%) ≦ 10 (2)
[2]
An acrylic resin comprising 80 to 99.5% by mass of methacrylic acid ester monomer units and 0.5 to 20% by mass of other vinyl monomer units copolymerizable with at least one methacrylic acid ester. ,
Weight average molecular weight measured by gel permeation chromatography (GPC) is 60,000 to
300,000
The acrylic system according to [1], wherein a molecular weight component of 1/5 or less of the peak molecular weight (Mp) obtained from the GPC elution curve is contained in an area area ratio of 7 to 40% obtained from the GPC elution curve. resin.
[3]
The acrylic resin according to [1] or [2], wherein the average particle size is 100 to 500 μm.
[ 4 ]
The molded object obtained by shape | molding the acrylic resin as described in any one of said [1] thru | or [3] .
[ 5 ]
The molded product according to [4] , which is a vehicle component.

Claims

When sieving using a sieve based on JIS-Z8801,
A weight average molecular weight (A) of particles having a particle diameter of 500 μm or more;
A weight average molecular weight (B) of particles having a particle diameter of 355 μm to 300 μm;
A weight average molecular weight (C) of particles having a particle diameter of 150 μm or less;
And an acrylic resin that satisfies the following relational expressions (1) and (2).
0 ≦ | [(A) − (B)] / (B) | × 100 (%) ≦ 10 (1)
0 ≦ | [(C) − (B)] / (B) | × 100 (%) ≦ 10 (2)

An acrylic resin comprising 80 to 99.5% by mass of methacrylic acid ester monomer units and 0.5 to 20% by mass of other vinyl monomer units copolymerizable with at least one methacrylic acid ester. ,
Weight average molecular weight measured by gel permeation chromatography (GPC) is 60,000 to
300,000
2. The acrylic resin according to claim 1, wherein a molecular weight component of 1/5 or less of a peak molecular weight (Mp) obtained from a GPC elution curve is contained in an area area ratio of 7 to 40% obtained from the GPC elution curve. .

The acrylic resin according to claim 1 or 2, wherein the average particle diameter is 100 to 500 µm.

The molded object obtained by shape | molding the acrylic resin as described in any one of Claims 1 thru | or 3 .

The molded article according to claim 4 , which is a vehicle part.