Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2005-08-11
2008-08-05
Mullis, Jeffrey C (Department: 1796)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S036800, C428S036900, C525S088000, C525S09200D, C525S09200D, C525S09200D, C525S09200D
Reexamination Certificate
active
07407694
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° 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° 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.
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Chiba Takeshi
Hiiro Tomoki
Kaneda Yutaka
Kokubo Tadashi
Kumasaki Atsushi
Brinks Hofer Gilson & Lione
Kaneka Corporation
Mullis Jeffrey C
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