超碰aⅴ人人做人人爽欧美丨欧美一区二区三区久久综合丨国产成人啪精品视频免费软件丨色欲综合一区二区三区丨国产精品无码无卡无需播放器

Hindered amines have good inhibition effect on photooxygen degradation of polymers and organic compounds, and are a kind of excellent light stabilizers.

It is a light stabilizer that can absorb the ultraviolet part of sunlight and fluorescent light sources without changing itself.

The oxidation process of polymers can be delayed or inhibited to prevent the aging of polymers and extend their service life.

It can be used as an efficient inhibitor in the distillation or transport of olefins and fats in olefins.

Tetramethyl guperone, tetramethyl guperol and its derivatives, tert-octylamine and other products.

Improve the antioxidant properties and outdoor UV resistance of plastic products, extend the service life.