A CURABLE JETTABLE FLUID FOR MAKING A FLEXOGRAPHIC PRINTING MASTER
申请人:AGFA NV
公开号:EP2656144B1
公开(公告)日:2020-06-24
PHOTOCHROMIC FILMS AND METHOD FOR MANUFACTURING THE SAME
申请人:Kim Sang Young
公开号:US20090250670A1
公开(公告)日:2009-10-08
Disclosed is a photochromic film for automobiles prepared by curing a photochromic composition comprising an acrylic resin, a crosslinking agent having an intramolecular UV stabilizing structure, and a photochromic dye, a preparation method of the photochromic film for automobiles, and an article comprising the photochromic film for automobiles.
CURABLE JETTABLE FLUID FOR MAKING A FLEXOGRAPHIC PRINTING MASTER
申请人:Vanmaele Luc
公开号:US20130269558A1
公开(公告)日:2013-10-17
The present invention relates to a curable jettable fluid for making a flexographic printing master comprising an initiator, a cyclic monofunctional (meth)acrylate monomer and a difunctional (meth)acrylate monomer characterized in that the initiator is an oligomer, a polymer or a copolymerizable compound.
US4329360A
申请人:——
公开号:US4329360A
公开(公告)日:1982-05-11
Tuning the color switching of naphthopyrans via the control of polymeric architectures
作者:Wilasinee Sriprom、Marjorie Néel、Christopher D. Gabbutt、B. Mark Heron、Sébastien Perrier
DOI:10.1039/b617865k
日期:——
A range of polymerisable photochromic naphthopyrans were prepared via the synthesis of an acrylate moiety on either the naphthalene ring (R) and/or the di-aryl (Ar) rings on the 3-position of the naphthopyran. The monomers obtained (NA) were copolymerised with methyl methacrylate (MMA) and methyl acrylate (MA) by the RAFT (reversible addition fragmentation chain transfer) process in order to control the structure of the polymeric chains and accurately control the number of photochromic molecules per chain. Films were prepared with the synthesized photochromic polymers and their photochromic properties were assessed. We found that the fading rate of the photochromic dye was slower in a matrix of PMMA (higher Tg) than in a matrix of PMA (lower Tg). By producing block copolymers of PMMA-b-poly(MA-co-NA), the fading rate was increased, and the production of PS-b-poly(MA-co-NA) further enhanced the speed of switching, as phase separation occurred between the poly(MA-co-NA) block and the PS block. This study presents an example of tuning the photochromic properties of a dye via variation of the architecture of its polymeric support.