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. 15, 2004
Filed:
Jul. 29, 2002
Seung-Uk Yeu, Daejeon, KR;
Ho-Yeul Choi, Daejeon, KR;
Chang-Sun Han, Daejeon, KR;
Wan-Sik Cha, Gwangmyung, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to an artificial pigment and a method of preparing the same, specifically, to an artificial pigment with excellent dry pick resistance and to a method of preparing the same. In order to accomplish the present invention, there is provided an artificial pigment of inverted core-shell structure comprising: a) a shell of butadiene polymer including: i) a seed of butadiene polymer having glass transition temperature of −10 to 50° C.; and ii) a seed covering of butadiene polymer having a glass transition temperature of −10 to 20° C.; and b) a core of styrene polymer having a glass transition temperature of 40 to 120° C. Also provided is method of preparing artificial pigment comprising: a) preparing a shell of butadiene polymer; and b) preparing a core of styrene polymer on the inner side of said shell of step a). The coating color comprising the artificial pigment of the present invention can make coated paper having excellent dry pick resistance anti high paper gloss and printing gloss as well as stiffness.