Process for continuous production of prepolymer syrups

Details Process for continuous production of prepolymer syrups Process for continuous production of prepolymer syrups

C - Chemistry, Metallurgy

08

F

18/1035, 402/451

C08F 265/06 (2006.01) C08F 20/12 (2006.01)

Patent

CA 1107752

Abstract of the Disclosure A process for the continuous production of a prepolymer syrup which comprises (A) continuously supplying a monomer comprising methyl methacrylate as a main component and a rsdical-polymerization initiator to a reaction zone wherein substantially a complete mixing is achieved, during which the reaction zone is kept under such a condition that the concentration of remaining initiator is 1/2 to 1/1,000 time that of supplied initiator, or (A') continuously supplying said monomer to first reaction area in a reaction zone wherein at least two reaction areas, in which sub- stantially a complete mixing is achieved, are arranged in series, continuously supplying a radical-polymerization initiator at the same time to at least two reaction areas including the first one, and passing the monomer through the reaction areas successively thereby polymerizing the monomer into syrup, during which the reaction areas are kept under such a condition that the concentration of remaining ini- tiator in at least the reaction areas to which the initiator is supplied is 1/2 to 1/1,000 time that of supplied ini- tiator, and then, optionally in the case of (A'), (B) introducing the resulting reaction mixture into reaction zone wherein a piston flow is substantially achieved, and passing it through the zone during which the temperature of the zone ant the average residence time of the mixture are maintained so that the rest of the polymer in the final syrup are produced in the zone and the concentration of remaining initiator is reduced to substantially a negligible - 1 - amount, thereby obtaining the final syrup, the distribution of polymerization degree of the polymer in the syrup being 3.0 or less as expressed in a polydispersity which is a ratio of weight average polymerization degree to number average polymerization degree. - 2 -

312893

Affiliated with

Also associated with

Rating

Process for continuous production of prepolymer syrups does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for continuous production of prepolymer syrups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for continuous production of prepolymer syrups will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-381294