This invention provides a method of augmenting an epithelial mucosal barrier, by contacting the barrier with a topical composition. This invention also provides the topical composition.
The topical composition comprises, dispersed or dissolved in a topically acceptable vehicle, at least one polymer containing either a repeat unit of structure 1 or a repeat unit of structure 2, or a mixture
This method and composition are useful in improving mucosal barrier function by, for example, topical application to an exposed or injured epithelial surface or by coating a compromised mucosal barrier in, for example, inflammatory bowel disease.
A circuit board includes a flexible board, a composite film, and a copper layer. The composite film is formed on the flexible board and defines at least one through hole. The composite film includes a base layer having an active surface, and a conductive layer formed by coated a conductive polymer on the active surface. The conductive polymer is made by a mixture comprising liquid crystal monomers, a silver complex, an initiator, and a catalytic agent, and a solvent, the mixture is heated to undergo atom transfer radical polymerization. The copper layer covers the conductive layer and an inner wall of each of the at least one through hole. The copper layer is electrically connected to the flexible substrate by the through hole.
Alpha-halogenated acid esters with polyvalent alcohols as atom transfer radical polymerization initiators
申请人:——
公开号:US20040260051A1
公开(公告)日:2004-12-23
The invention relates to &agr;-halocarboxylic acid esters of polyhydric, at least trihydric, alcohols, which can be used as initiators for ATRP. Using those initiators it is possible to prepare block copolymers having branched structures.