摘要:
Curable compositions comprising (a) a fluorine- or silicon-containing copolymer, (b) a (meth)acrylic copolymer and (c) at least one curing agent are described, each of the two copolymers comprising functional groups which can react with the curing agent, wherein the fluorine- or silicon-containing copolymer comprises a UV absorber which is chemically bound by reaction with the free reactive groups of the copolymer. These copolymer compositions can be used as paint binders.
摘要:
The stabilised binder is a mixture of two copolymers and at least one curing agent. The one copolymer contains fluorine or silicon and a UV absorber in copolymerised form. The other copolymer is an acrylic resin. Suitable curing agents are melamine resins or polyisocyanates.
摘要:
The stabilized binder is a mixture of two copolymers and at least one curing agent. The one copolymer contains fluorine or silicon and a UV absorber in copolymierized form. The other copolymer is an acrylic resin. Suitalbe curing agents are melamine resins or polyisocyanates.
摘要:
2-(2-Hydroxyphenyl)-4,6-diaryl-1,3,5-triazines, which carry in the 4-position of the 2-hydroxyphenyl radical a silyl group linked through oxygen to the phenyl nucleus, as well as condensation products whose ##STR1## units contain 2-(2-hydroxyphenyl)-4,6-diaryl-1,3,5-triazines in the side-chain, are UV absorbers which are suitable for use as stabilizers for organic polymers.
摘要:
Compounds which comprise at least one group of the formula I or II ##STR1## and at least one polyalkylpiperidine group of the formula III ##STR2## in which R and R.sub.1 to R.sub.6 have the meaning indicated in claim 1, are effective stabilizers for organic materials against damage by light, oxygen and heat.
摘要:
o-Hydroxyphenyl-s-triazines of the formula I in which n is 1 to 4 and R1 to R7 are as defined in claim 1, can be used, in combination with sterically hindered amines of the polyalkylpiperidine type, for stabilizing organic polymers. Some of these compounds ate novel and can also be used without polyalkylpiperidine.
摘要:
Compounds which comprise at least one group of the formula I or II ##STR1## and at least one polyalkylpiperidine group of the formula III ##STR2## in which R and R.sub.1 to R.sub.6 have the meaning indicated in claim 1, are effective stabilisers for organic materials against damage by light, oxygen and heat.
摘要:
2-(2-Hydroxyphenyl)-4,6-diphenyl- and -4,6-di-p-tolyl-1,3,5-triazines are particularly suitable stabilisers, especially against light-induced degradation, for coating materials. They are superior in this respect to the corresponding 4,6-bis(2,4-dimethylphenyl) derivatives.
摘要:
o-Hydroxyohenyl-s-triazines containing suitable functional groups are incorporated in polymers by copolymerisation, copolycondensation, copolyaddition or by polymer-analogous reaction. The modified polymers so obtained have excellent stability to degradation induced by light, oxygen and heat. They can also be used as stabilisers.
摘要:
Light-stabilized star polymer microparticles are described which are prepared with particular advantage by group transfer polymerization. The light stabilization is effected by carrying out at least a part step of the polymerization in the presence of a light stabilizer, for example a hindered amine or/and a UV absorber. With particular advantage, those light stabilizers are used which contain reactive groups in the molecule and, in this way, can be chemically incorporated into the polymer. The polymer microparticles show excellent light stability and are outstandingly suitable as constituents in coating compositions which can be processed, for example, to give coating films of high light stability.