Anionic polymerization in high viscosity dispersing medium to fo

Details Anionic polymerization in high viscosity dispersing medium to fo Anionic polymerization in high viscosity dispersing medium to fo

1989-02-14

1990-07-17

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526201, 526346, 526909, C08F 214, C08F 448

Patent

active

049422090

ABSTRACT:
The viscosity of the dispersing medium, such as cyclohexane, in the anionic dispersion polymerization of monomers, such as styrene, is increased by adding a higher viscosity inert miscible liquid, such as hexadecane, or a soluble inert solid, or by using a liquid having a viscosity of greater than about 2 cp. The increased viscosity assists in the formation of dispersed polymer particles having a narrower particle size distribution than those produced in the lower viscosity dispersing medium.

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patent: 4829135 (1989-05-01), Gunesin et al.
patent: 4839418 (1989-06-01), Schwaben et al.

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