您的位置: 首页 > 农业专利 > 详情页

Capsule, and, Method for reducing the water permeability of a capsule shell.
专利权人:
COLGATE-PALMOLIVE COMPANY
发明人:
SHIRA PILCH,JAMES G. MASTERS
申请号:
BRPI0811109
公开号:
BRPI0811109A2
申请日:
2008.04.30
申请国别(地区):
BR
年份:
2014
代理人:
摘要:
A capsule comprising a core and a shell surrounding and enclosing the core, the shell comprising at least one first polymer having a first water solubility parameter, and at least one second polymer having a water solubility parameter higher than the first water solubility parameter, wherein the second polymer is crosslinked, and/or all of the at least one second polymer is present in an amount that is less than all of the at least one first polymer. Upon exposure to an aqueous medium, the first polymer begins to swell, and water begins to leak into the capsule. Also, the second polymer is attracted to the entering water. As the second polymer absorbs water and swells, the mean free space in the shell decreases and the tortuous pathway for materials crossing the boundary of the wall increases. As a result, leakage rates across the capsule wall decrease.
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