Polymerization process

Details Polymerization process Polymerization process

1981-12-02

1983-12-06

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524504, 524522, 524523, C08L 3302

Patent

active

044194650

ABSTRACT:
A process is described for making sterically stabilized non-aqueous dispersions of composite polymer microparticles, in which (1) monomers including at least one crosslinking monomer are polymerized in an aqueous medium at a temperature at least 10.degree. higher than the glass transition temperature of the polymer to be formed, in the presence of a block or graft copolymer stabilizing agent, under conditions such that there is at no time present a separate monomer phase, (2) further monomers, not including any crosslinking monomer, are polymerized in the dispersion thus obtained, the presence of a separate monomer phase again being avoided, and (3) the microparticles are transferred from the resulting dispersion into a non-aqueous medium which is a solvent for the non-crosslinked polymer generated in (2). The microparticles are of value for incorporation into coating compositions the main film-forming constituent of which is compatible with the non-crosslinked component of the particles.

REFERENCES:
patent: 3317635 (1967-05-01), Osmond
patent: 3514500 (1970-05-01), Osmond
patent: 3574161 (1971-04-01), Campion
patent: 3929693 (1975-12-01), Hochberg
patent: 4025474 (1977-05-01), Porter
patent: 4102846 (1978-07-01), Bentley
patent: 4115472 (1978-09-01), Porter
patent: 4209435 (1980-06-01), Backhouse
patent: 4229339 (1980-10-01), Bentley

Affiliated with

Also associated with

Rating

Polymerization process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymerization process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymerization process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2030305