The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2014
Filed:
Sep. 30, 2004
Yasuhiko Nabeshima, Hiroshima, JP;
Atsunori Koshirai, Toyama, JP;
Yasuhiko Nabeshima, Hiroshima, JP;
Atsunori Koshirai, Toyama, JP;
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Abstract
A flowability improver for engineering plastics which comprises a polymer (A) comprising of 50 to 99.5% by mass of aromatic vinyl monomer units (a1), 0.5 to 50% by mass of (meth)acrylate monomer units (a2) having an ester group of phenyl or substituted phenyl group, and 0 to 40% by mass of other monomer units (a3) (with the proviso that the total of the units (a1) to (a3) is 100% by mass) and having a weight average molecular weight of 5000 to 150000. The flowability improver can improve engineering plastics in melt-flow characteristics (processability in molding) and chemical resistance without impairing the plastics in heat resistance, exfoliation resistance, and transparency.