| 摘要 |
1333241 Quaternary ammonium groupcontaining polymers ROHM & HAAS CO 17 Aug 1970 [20 Aug 1967] 39599/70 Heading C3P [Also in Divisions D2 and H1] Polymers comprising recurring units of the formula where R is H or methyl, R<SP>1</SP> is hydroxyethyl or hydroxypropyl, A is ethylene or propylene, R<SP>2</SP> and R<SP>3</SP> are each an alkyl group of up to four carbon atoms, and X- is a halogen anion, are made by quaternizing polymers comprising units of with ethylene oxide or propylene oxide, or by first quaternizing the monomer and then polymerizing it. In Example A, dimethylaminoethyl methacrylate hydrochloride is dissolved in water and polymerized with a redox catalyst system (ammonium persulphate and hydrosulphite). The polymer solution is cooled and autoclaved with ethylene oxide. |
