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:
Mar. 13, 2012
Filed:
Jul. 10, 2008
Young-man Yoo, Gyeonggi-do, KR;
Jae-kyoung Roh, Gyeonggi-do, KR;
Kye-yune Lee, Gyeonggi-do, KR;
Tae-woong Lee, Gyeonggi-do, KR;
Young-Man Yoo, Gyeonggi-do, KR;
Jae-Kyoung Roh, Gyeonggi-do, KR;
Kye-Yune Lee, Gyeonggi-do, KR;
Tae-Woong Lee, Gyeonggi-do, KR;
SK Chemicals Co., Ltd., , KR;
Abstract
A polyester resin which includes acid components having aromatic dibasic acid component and trivalent or higher acid component; alcohol components including aliphatic, aromatic or cycloaliphatic diol component, and trihydric or higher alcohol component; polyolefin polyol having 1,800 to 2,500 number average molecular weight and hydroxyl value of 40 to 55 KOHmg/g; and wax having melting point of 80 to 110, wherein the amount of the polyolefin polyol is 0.1 to 2 weight % and the amount of the wax is 0.5 to 15 weight % with respect to the total polyester resin. Also disclosed is a method for preparing polyester resin by (a) carrying out an esterification reaction or an ester exchange reaction with the acid components, the alcohol components, and the polyolefin polyol; and (b) carrying out a polycondensation reaction for reaction product of the esterification or ester exchange reaction in the presence of the wax.