Preparation of bead-form expandable styrene polymers

Details Preparation of bead-form expandable styrene polymers Preparation of bead-form expandable styrene polymers

C - Chemistry, Metallurgy

08

J

403/80

C08J 9/20 (2006.01) C08J 9/22 (2006.01)

Patent

CA 2018278

- 11 - O.Z. 0050/40907 Abstract of the Disclosure: Bead-form expandable styrene polymers are obtained by suspension polymerization of styrene with addition of from 1 to 10 % by weight of C3- to C6-hydrocarbons as blowing agents and, if desired, customary additives, where a) the polymerization is initiated by rapidly heating the polymerization batch to from 80 to 90°C within a maximum of 2 hours, b) subsequently allowing the reaction temperature to increase to from 120°C to 130°C by from 8 to 17°C per hour, and c) the conversion is from 30 to 60 % when 100°C is reached, and d) the conversion is 80 % or more when the maximum temperature is reached, and e) the batch is subsequently kept at from 100 to 130°C until the residual monomer content in the polymer has dropped to less than 0.1 %.

Affiliated with

Also associated with

Rating

Preparation of bead-form expandable styrene polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of bead-form expandable styrene polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of bead-form expandable styrene polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1597110