Preparation of acrylic polymer

Abstract

Abstract PURPOSE:To obtain the titled optionally improved uniform polymer continuously, by rapidly polymerizing a monomer in a reactor having feed inlets for main and assistant raw materials, a transferring means and temperature controlling mechanisms, feeding an addition polymerization monomer from the feed inlet for the secondary raw material, and adding the raw material to the polymer. CONSTITUTION:A raw material, consisting of an acrylic monomer essentially, and having <=10 poises viscosity at ordinary temperature is fed continuously to a reactor 1 having a transferring means, e.g. a screw 6, transferring the contents continuously fed from a feed inlet 2 for a main raw material continuously to a taking outlet 3 while renewing the surface thereof, temperature controlling mechanisms 7-11 extending all over the transferring process and a feed inlet 4 for the secondary raw material in the course of the transferring process, and rapidly polymerized to increase the viscosity thereof, and the raw materials are polymerized to a given conversion. A raw material consisting of a monomer for addition polymerization is continuously fed from the feed inlet 4 for the secondary raw material and added to the acrylic polymer to give the aimed mass polymer having the monomer for the addition polymerization added to the acrylic polymer.

Inventors

• 👤 Naoki Matsuoka
• 👤 直樹 松岡
• 👤 Yutaka Hori
• 👤 豊 堀
• 👤 Ichiro Ijichi
• 👤 伊地知　市郎
• 👤 Makoto Sunakawa
• 👤 砂川　誠
• 👤 Keiji Matsumoto
• 👤 啓司 松本
• 👤 Kenji Sano
• 👤 建志 佐野

Bibliographic Details