APPARATUS FOR BULK POLYMERIZATION AND METHOD FOR CONTROL THEREOF

Japanese Patent JPH0258503

A

PURPOSE:To obtain an apparatus, designed to hold helical blades having different twisting directions on plural rotating shafts provided in the upper part of a vessel, scrape off the inner wall with the blades and take a product from the lower part of the vessel and capable of controlling the rotation according to a change in viscosity without sticking and retention of a polymerization solution. CONSTITUTION:A bulk polymerization apparatus of a structure, equipped with helical blades (5a) and (5b) having respective different twisting directions held on two rotating shafts (3a) and (3b) provided in the upper part of a vessel body 1 at an interval so as to rotate while mutually entering the tips thereof in the rotation regions of the opposite sides and respective stirring members (10a) and (10b) on the inside of the helical blades and scraping off the inner wall part of the vessel with the helical blades is used to charge polymerization raw materials and a catalyst, etc., from a charging port 12 into the vessel body 1. A high temperature heating medium is passed through a jacket 2 and the helical blades are rotated to detect the viscosity of the polymerization solution with a torque meter 6. Polymerization is carried out while regulating the number of revolutions of a motor 7 with a rotation controller 8 according to a change in viscosity thereof. The resultant polymer is then taken from the lower part 11 of the vessel body to afford the objective product.

ODA CHIKAO
NAKAMOTO HIDEKAZU
KINOSHITA TAKATOSHI

JP20838088A

February 27, 1990

August 24, 1988

Click for automatic bibliography generation  

HITACHI LTD

B01F7/00; B01F7/16; B01J19/20; C08F2/00; C08F2/02; C08G85/00; (IPC1-7): B01F7/00; B01J19/20; C08F2/00; C08F2/02; C08G85/00

Katsuo Ogawa (1 person outside)

Next Patent: PRODUCTION OF AQUEOUS RESIN DISPERSION