Polymerization of vinyl monomer

Abstract

Abstract PURPOSE:To polymerize a vinyl monomer while preventing scale deposition, by previously applying a specified compound to the inside surface of a polymerizer and polymerizing the monomer in an aqueous medium therein. CONSTITUTION:A vinyl monomer is polymerized in an aqueous medium, in a polymerizer with its inside surface being previously coated with a reaction product among a hydroxystyrene polymer, a polyphenol compound and an aromatic aldehyde compound. The hydroxystyrene polymer used is synthesized from an o-, m- or p-hydroxystyrene. A commercially available oxime polymer of a MW of about 1,000-40,000 can also be suitable used. Although diphenol compounds such as catechol and bisphenol A, triphenols such as pyrogallol and phloroglucinol, etc., can be used as said polyphenols, the use of non- substituted benzaldehyde is the most advantageous cost wise.

Inventors

• 👤 Tetsuya Asahi
• 👤 旭　哲也
• 👤 Hiroshi Kaneko
• 👤 博 金子
• 👤 Toru Iwashita
• 👤 岩下　徹
• 👤 Akio Kiyohara
• 👤 清原　明男

Bibliographic Details