✦ LIBER ✦
Convenient method for preparing polystyrene having β-hydroxy group: Its application to the synthesis of polyethylene glycol-grafted polystyrene resin
✍ Scribed by Byeong-Deog Park; Hyeong-Ik Lee; Sun-Jong Ryoo; Yoon-Sik Lee
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 280 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
An effiecient method for preparing B-hydroxy polystyrene resin is described. FriedeI-Crafts alkylation of polystyrene resin with propylene oxide in the presence of a Lewis acid catalyst affored 2-(1-methyl) hydroxyethyl polystyrene (PS-PO), Addition of ethylene oxides to the PS-PO in the presence of base gave PS-g.-PEG resins. The resin contained 60-80%(w/w) of PEG and showed excellent stability in highly acidic media.