Commonwealth Scientific and Industrial Research Organisation
发明人:
ADHIKARI, Raju
申请号：
EP16869405
公开号：
EP3383165A4
申请日:
2016.11.30
申请国别(地区):
EP
年份:
2019
代理人:
摘要：
A process for preparing a polymeric membrane for materials used in crop production comprising: a) providing an aqueous dispersion of a polyurethane or polyurethane-urea elastomer comprising segments formed from the copolymer segment of Formula I A1 - [Y1]n - L - [Y2]q - A2 Formula 1 wherein A1 is an end capping group； A2 is hydrogen or an end capping group； each [Y1]n and [Y2]q is independently selected from a polyether macrodiol, polycarbonate macrodiol, polyester macrodiol, and wherein at least one of [Y1]n and [Y2]q is a polyester macrodiol； L is a divalent linking compound independently selected from urethane, urea, carbonate, ester, and phosphonate； n is an integer of 2 to 50； q is an integer of 2 to 50； and b) spraying the aqueous dispersion onto materials to be used in crop production to form a polymeric membrane on the materials.
