您的位置: 首页 > 农业专利 > 详情页

RÉSINE ABSORBANT L'EAU À BASE D'ACIDE POLYACRYLIQUE ET SON PROCÉDÉ DE PRODUCTION
专利权人:
NIPPON SHOKUBAI CO.; LTD.
发明人:
TAKAAI, TOSHIHIRO,WADA, HIDENORI,FUJINO, SHINICHI
申请号:
EP11800917
公开号:
EP2589613A4
申请日:
2011.06.29
申请国别(地区):
EP
年份:
2014
代理人:
摘要:
Provided is a method for producing a water absorbent resin, which promotes the formation of interconnected voids (continuous gas bubbles) in a foamed polymer (foam-like water absorbent resin) by a more convenient method, and produces with high efficiency a water absorbent resin which exhibits a high water absorption rate even when stepped into a sheet form or a powder form in hygiene articles and the like. Disclosed is a a method for producing a polyacrylic acid-type water absorbent resin, comprising (A) a step of obtaining an aqueous solution of acrylic acid-type monomers containing gas bubbles dispersed therein; (B) a step of polymerizing the aqueous monomer solution and thereby obtaining a foamed polymer; and (C) a step of heating and drying the foamed polymer, wherein gas bubbles are incorporated such that the volumetric expansion factor defined by the following formula (1); [Formula 1] exceeds 1.1 times, and the aqueous monomer solution having a monomer concentration defined by the following formula (2) ; [Formula 2] of 40% by weight or greater is boiling temperature of 100°C or higher.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

意 见 箱

匿名:登录

个人用户登录

找回密码

第三方账号登录

忘记密码

个人用户注册

必须为有效邮箱
6~16位数字与字母组合
6~16位数字与字母组合
请输入正确的手机号码

信息补充