Production method of microcapsules

Details Production method of microcapsules Production method of microcapsules

1993-05-12

1994-11-08

Kight, III, John

Stock material or miscellaneous articles

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

Particulate matter

42840221, 264 47, 503215, B32B 516, B32B 904

Patent

active

053625650

ABSTRACT:
A production method of microcapsules using a copolymer including at least three types of monomers including 50 to 90 by weight of acrylic acid, 2 to 40% by weight of an acrylamidealkylsulfonic acid such as acrylamidepropanesulfonic acid, and 2 to 15% by weight of an alkylacrylate such as butylacrylate as an anionic water-soluble polymer as an emulsifier and a reaction promoter for a core substance of the microcapsules, whereby obtaining microcapsules for use in pressure-sensitive copy paper having wall films of an amine-aldehyde condensation polymer which reduces spot staining generated when the capsules are used in pressure-sensitive copy paper by reducing coarse particles present in traces in the microcapsule slurry.

REFERENCES:
patent: 5061410 (1991-10-01), Sakamoto et al.

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