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:
Jul. 05, 2005
Filed:
Apr. 09, 2002
Changjin Lee, Daejeon, KR;
Yongku Kang, Daejeon, KR;
Jong Goo Kang, Choongjoo-shi, KR;
Hee Jung Kim, Busan, KR;
Moon Young Jin, Daejeon, KR;
Sang IL Seok, Daejeon, KR;
Kookheon Char, Seoul, KR;
Sang-hyun Chu, Seoul, KR;
Changjin Lee, Daejeon, KR;
Yongku Kang, Daejeon, KR;
Jong Goo Kang, Choongjoo-shi, KR;
Hee Jung Kim, Busan, KR;
Moon Young Jin, Daejeon, KR;
Sang Il Seok, Daejeon, KR;
Kookheon Char, Seoul, KR;
Sang-Hyun Chu, Seoul, KR;
Korea Research Institute of Chemical Technology, Daejeon, KR;
Abstract
The present invention relates to polyalkylene oxide porogens having hyper-branches and low dielectric-constant insulators using them. More particularly, the present invention relates to polyalkylene oxide porogens having hyper-branches expressed by the following formula (1), where the polyalkylene oxide porogen has a center molecular (D) having branches (W), and low dielectric-constant insulators having nanopores prepared by coating a mixture of the porogen and a high heat-resistant resin such as polysilsesquioxane and thermal treating the coated substrate at a temperature effective to degrade the porogen.DY—W)  (1)