MULTI-STAGE POLYMER COMPOSITIONS HAVING A TRIGGERED RESPONSE.

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专利权人:

ROHM AND HAAS COMPANY

发明人:

CHING-JEN CHANG

申请号：

MX2003PA11211

公开号：

MXPA03011211(A)

申请日:

2003.12.04

申请国别(地区):

墨西哥

年份:

2004

代理人:

摘要：

This invention provides barrier materials and devices prepared from multi-stage polymer compositions that protect active ingredients and beneficial agents in an aqueous system and that are triggered to release such agents to an environment of use.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/