THERMALLY EXPANDABLE MICROCAPSULE AND METHOD FOR PRODUCING THE SAME

Japanese Patent JP2005325264

A

To provide a method for efficiently and readily producing a thermally expandable microcapsule and hardly causing the remaining of an inorganic material and a metal component on the surface or in the interior of the particle.

The method for producing the thermally expandable microcapsule uses a cellulose ether providing 0.2 wt.% aqueous solution having 48×10-5-60×10-5 N/cm surface tension and 2 wt.% aqueous solution having 2-5,000 mPa s viscosity at 23°C as a suspension disperser when producing the thermally expandable microcapsule by subjecting an aqueous suspension containing a monomer component comprising at least one kind of radically polymerizable vinylic monomer and a polyfunctional monomer, a volatile expanding agent to be formed into a gas shape at a temperature not higher than the softening point of the polymer obtained from the monomer component, and the suspension disperser to a suspension polymerization.

JP5241039	Wall membrane for microcapsules, encapsulated microcapsules and method for manufacturing the same.
WO/2002/049752	MULTI-STEP METHOD FOR PRODUCING GAS-FILLED MICROCAPSULES
WO/2014/111477	REINFORCED GEL CAPSULES, AND REINFORCED LYOPHILIZED GEL CAPSULES, CONTAINING NANO-OBJECTS AND PROCESSES FOR PREPARING SAME

OMURA TAKAHIRO
MAENAKA HIROSHI
NAGATANI NAOYUKI

JP2004145473A

November 24, 2005

May 14, 2004

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SEKISUI CHEMICAL CO LTD

B01J13/14; B01J13/20; C08F2/20; C09K3/00; C09K23/52; C09K23/48; (IPC1-7): C09K3/00; B01F17/48; B01F17/52; B01J13/14; B01J13/20; C08F2/20

JP2003531928A	2003-10-28
JPH1172955A	1999-03-16
JPS6413556A	1989-01-18

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