Ultrasonic polymerization process

Details Ultrasonic polymerization process Ultrasonic polymerization process

1994-01-27

1995-11-14

Nagumo, Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 54, 522 59, 522 61, 522 62, 522 84, 522168, 522175, 522177, 522182, 522184, 522185, 522187, 522188, C08F 256

Patent

active

054667224

ABSTRACT:
Polymerization of ethylenically unsaturated monomers such as methyl methacrylate can be initiated in solutions containing monomer and a special non-polymeric initiator with intense ultrasound. The number average molecular weight of the poly(methyl methacrylate) that forms is about 300,000 gmol.sup.-1 as compared with polystyrene standards. The conversion of the polymerization is about 50% for poly(methyl methacrylate). Variations of the polymerization rate with time and the amount of the initiator are explained by a simple reaction mechanism.

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