Method for preparing light-absorbing polymeric compositions
申请人:——
公开号:US20040195552A1
公开(公告)日:2004-10-07
The present invention recites a method comprising reacting in a solvent in the presence of a base
a) at least one diacidic monomer comprising about 1 to 100 mole % of at least one light-absorbing monomer having a light absorption maximum between about 300 nm and about 1200 nm and 99-0 mole % of a non-light absorbing monomer which does not absorb significant light at wavelengths above 300 nm or has a light absorption maximum below 300 nm, with
b) an organic compound of Formula II
X—B—X
1
wherein B is a divalent organic radical to form a light absorbing composition comprising a mixture of a polymer having the formula
1
and a cyclic compound having the general formula
2
wherein B is as defined above; n is at least 2, m is 1, 2, 3 or 4 and A comprises the residue of a diacidic monomer comprising about 1 to 100 mole % of at least one light-absorbing monomer having a light absorption maximum between about 300 nm and about 1000 nm and wherein the remaining portion of A comprises the residue of a non-light absorbing monomer which does not absorb significant light at wavelengths above 300 nm or has a light absorption maximum below 300 nm.
Colorants containing copolymerizable vinyl groups and sulfonamide linkages
申请人:——
公开号:US20020128343A1
公开(公告)日:2002-09-12
Disclosed are thermally-stable, colored, photopolymerizable compounds containing a vinyl group which are capable of being copolymerized with reactive vinyl monomers to produce colored compositions such as polyacrylates, polymethacrylates, polystyrene, etc. The compounds exhibit good thermal stability, fastness (stability) to UV-light, good solubility in the reactive monomers and good color strength.