Pharmaceutical and cosmetic gels, emulsions, creams and films
摘要
Novel gels are prepd. by deacylating hyaluronic acid (HA) with a base in an alcohol and taking up the prod. in purified water or a physiological buffer soln. in a concn. of 1-2 wt.%, where the HA is isolated from animal tissue or produced by biotechnology methods. Also claimed are emulsions, gels, creams or films based on deacetylated HA, where the deacetylated HA is crosslinked with itself or with other biopolymers or synthetic polymers in the presence of an activated dicarboxylic acid in water at "medium" pH values.
申请公布号
DE4439575(A1)
申请公布日期
1996.05.09
申请号
DE19944439575
申请日期
1994.11.05
申请人
"PERMSELECT" GESELLSCHAFT FUER ZELLSTRUKTURIERTE MATERIALIEN MBH, 12489 BERLIN, DE
发明人
WESTPHAL, GUENTER, PROF. DR., 10319 BERLIN, DE;WASICKI, HELGARD, 10409 BERLIN, DE;SCHOEBEL, LEANDER, 12557 BERLIN, DE;KLUEGEL, ULRICH, 12681 BERLIN, DE
