Title:
ブロック共重合体
Document Type and Number:
Japanese Patent JP4256785
Kind Code:
B2
Abstract:
The present invention relates to a block copolymer (A) including a (meth)acrylic polymer block (a) and an acrylic polymer block (b). The (meth)acrylic polymer block (a) is preferably copolymerized with a monomer having a functional group having high cohesive force, such as a carboxyl group, so that the 5%-weight-loss temperature is 300 DEG C or more or the tensile strength is 3 MPa or more, and the hardness measured by a type A durometer according to JIS K6253 is 50 or less, and a compression set measured after 22 hours at 70 DEG C is 45% or less. The block copolymer (A) exhibits excellent thermal decomposition resistance and low compression set at high temperatures. The block copolymer (A) can be used as a soft material for automobile, and has low hardness, high adhesion, high oil resistance, high weather resistance, high heat resistance, high recycling property, high tensile properties; and high wax remover resistance.
Inventors:
千葉 健
大城 伸明
小久保 匡
日色 知樹
武貞 健太郎
熊崎 敦
谷口 明男
金田 豊
大城 伸明
小久保 匡
日色 知樹
武貞 健太郎
熊崎 敦
谷口 明男
金田 豊
Application Number:
JP2003567960A
Publication Date:
April 22, 2009
Filing Date:
February 12, 2003
Export Citation:
Assignee:
株式会社カネカ
International Classes:
C08F293/00; C08F8/12
Attorney, Agent or Firm:
朝日奈 宗太