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:
Jun. 28, 2011
Filed:
Jan. 04, 2008
Yoon-ho Kim, Jeollanam-do, KR;
Geon-soo Kim, Daejeon, KR;
Chan-hong Lee, Daejeon, KR;
Hyung-jin Kim, Jeollanam-do, KR;
Yoon-ho Kim, Jeollanam-do, KR;
Geon-soo Kim, Daejeon, KR;
Chan-hong Lee, Daejeon, KR;
Hyung-jin Kim, Jeollanam-do, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a graft copolymer for a transparent thermoplastic polyurethane resin prepared by graft copolymerization of (a) 50-85 weight % of rubber latex having a multi-layered structure composed of an inner layer and an outer layer comprising a conjugated diene monomer and an ethylenically unsaturated aromatic compound in which the refractive index of the inner layer is greater than that of the outer layer; and (b) 15-50 weight % of a C-Cvinyl monomer; a method for making same; and a thermoplastic polyurethane resin composition comprising same having excellent color properties, calendaring properties, low temperature impact strength and transparency.