Capsule manufacture

Details Capsule manufacture Capsule manufacture

1984-06-12

1985-11-12

Lovering, Richard D.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

264 47, 346215, 428914, B01J 1302

Patent

active

045528110

ABSTRACT:
A process is disclosed for performing encapsulation, en masse, by an in situ polymerization reaction to yield capsule wall material. The reaction comprises the polymerization of urea and formaldehyde, or monomeric or low molecular weight polymers of dimethylol urea or methylated dimethylol urea, melamine and formaldehyde, monomeric or low molecular weight polymers of methylol melamine or methylated methylol melamine, in an aqueous vehicle and the reaction is conducted in the presence of certain acrylic acid copolymers. The disclosed encapsulation process provides improved resistance of the emulsion of intended capsule core material to destabilization and permits the manufacture of microcapsules with improved drop size distribution, improved resistance to frictional smudge damage and enhanced impermeability.

REFERENCES:
patent: 3704264 (1972-11-01), Gorman
patent: 4105823 (1978-08-01), Hasler et al.
patent: 4221710 (1980-09-01), Hoshi et al.
patent: 4251386 (1981-02-01), Saeki et al.
patent: 4353809 (1982-10-01), Hoshi et al.
patent: 4356109 (1982-10-01), Saeki et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1879818