干女生尤物视频网站_惠民福利极品人妻老师的娇喘呻吟_美国成人毛片免费观看_久久AV无码专区亚洲_午夜国产欧美_日韩亚洲国产一级片_亚洲一区二区色在线视频网站_激情无码视频_五月婷一本到五月天_美女高潮喷白浆网站

Service hotline:+86-158-7060-8400
Mobile
Products
ultraviolet absorber UV-3638

1. Chinese name: ultraviolet absorber UV-3638

2. Chemical name: 2,2 '- (1,4-phenylene) bis-4H-3,1-benzoxazin-4-one

3、CAS:18600-59-4

4. Molecular formula: C22H12N2O4

5. Structural formula:


6. Appearance: white or almost white powder

7. Content: ≥ 99%

8. Application: PET Film

Fiber

Containers

PETG

PC-Capstock

PC Molding

Structural type:ultraviolet absorber UV-3638
Back