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Title:
METHOD FOR PREPARING A SUPERABSORBENT POLYMER
Document Type and Number:
WIPO Patent Application WO/2011/007974
Kind Code:
A2
Abstract:
The present invention relates to a method for preparing a superabsorbent polymer, and more particularly, to a method for preparing a superabsorbent polymer comprising: a step of preparing a monomer composition containing a water-soluble ethylenically unsaturated monomer and non-reactive fine particles having a diameter of 20 nm to 1 mm; and a step of performing a thermal polymerization or UV polymerization process on the monomer composition. The present invention injects fine particles into the monomer to provide a passage for smoothly discharging moisture or heat from the superabsorbent polymer during or after polymerization, and thus produces a high-quality superabsorbent polymer having superior physical properties with a low moisture content and a low temperature, and reduces energy consumption during a drying process.

Inventors:
KIM, Gi-Cheul (9-302, LG Employee Apt. Doryong-dong, Yuseong-gu, Daejeon 305-340, 305-340, KR)
김기철 (대전광역시 유성구 도룡동 LG사원아파트 9동 302호, 305-340 Daejeon, 305-340, KR)
LEE, Sang-Gi (1 Sejong Apt, Jeonmin-dong, Yuseong-gu, Daejeon 305-728, 305-728, KR)
이상기 (대전광역시 유성구 전민동 세종아파트 109동 1104호, 305-728 Daejeon, 305-728, KR)
KIM, Kyu-Pal (706 Sambaek Crasian, 420-35 Guseo-dong, Geumjeong-gu, Busan 609-310, 609-310, KR)
Application Number:
KR2010/004330
Publication Date:
January 20, 2011
Filing Date:
July 02, 2010
Export Citation:
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Assignee:
LG CHEM, LTD. (20 Yoido-dong, Youngdungpo-gu, Seoul 150-721, 150-721, KR)
주식회사 엘지화학 (서울특별시 영등포구 여의도동 20, 150-721 Seoul, 150-721, KR)
KIM, Gi-Cheul (9-302, LG Employee Apt. Doryong-dong, Yuseong-gu, Daejeon 305-340, 305-340, KR)
김기철 (대전광역시 유성구 도룡동 LG사원아파트 9동 302호, 305-340 Daejeon, 305-340, KR)
LEE, Sang-Gi (1 Sejong Apt, Jeonmin-dong, Yuseong-gu, Daejeon 305-728, 305-728, KR)
이상기 (대전광역시 유성구 전민동 세종아파트 109동 1104호, 305-728 Daejeon, 305-728, KR)
International Classes:
C08F2/44; C08F20/00; C08K7/18; C08L33/00
Foreign References:
JP2006110545A2006-04-27
JP2005095759A2005-04-14
US4735987A1988-04-05
US20050113252A12005-05-26
JPS56161408A1981-12-11
JPS57158209A1982-09-30
JPS57198714A1982-12-06
JP2004250689A2004-09-09
KR100330127B12002-03-13
Other References:
See also references of EP 2455405A2
Attorney, Agent or Firm:
YOU ME PATENT & LAW FIRM (Seolim Bldg, 649-10 Yoksam-dong, Kangnam-ku, Seoul 135-080, 135-080, KR)
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