(2) (2) Rhodorsil HALS, a brand of Rhodiola company, has introduced various finishing agents, which can give fabric softness without yellowing. Rhodorsil HALS is a combination of HALS technology and silica gel skeleton. Its formula of non-yellowing amino silicone has been patented.
③ Cyclohexylamino silicone oil has excellent yellowing resistance. The preparation method of cyclohexylaminosiloxane is the addition of allyl cyclohexylamine and hydrosilane catalyzed by platinum. & lt/P & gt；
④ Piperazine modified amino silicone oil can inhibit yellowing by introducing cyclic molecular oxygen into polydimethylsiloxane molecules.
⑤ Epoxy silicone oil was prepared by hydrosilylation of hydrogen-containing silicone oil with α -alkenyl epoxy compound, and then cyclized with organic ammonia to prepare a new type of tertiary amine modified amino silicone oil, which can reduce or avoid yellowing.