COPOLYMERIZED POLYURETHANE RESIN AND AQUEOUS EMULSION

WIPO Patent Application WO/2014/088023

A1

[Problem] To provide a method in which: the amount of organic solvent removed by evaporation in an emulsification process according to the acetone method is reduced; a polyether segment is copolymerized to the molecular terminal as a method for shortening the process time; and polymer components are phase-transitioned quickly from a high-concentration polymer/organic solvent solution phase to an aqueous phase. [Solution] A polyether segment is copolymerized in the molecule of this polyurethane resin, and thus, the solution viscosity of the organic solvent solution is reduced effectively. Further, said ether segment exists at the molecular terminal, and thus, the polyurethane resin produced in the organic solvent phase during the aqueous emulsion production process is phase-transitioned smoothly from the high-concentration organic solvent solution phase to the aqueous phase. As a result, the amount of organic solvent to be removed by evaporation can be reduced, and thus, the efficiency of production can be improved as a result of reduction in process time, and environmental loads can be reduced as a result of reduction in the amount of organic solvent waste.

SHINOZAWA NAOKO (JP)
KIZUMOTO HIROTOSHI (JP)

PCT/JP2013/082550

June 12, 2014

December 04, 2013

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TOYO BOSEKI (JP)

C08G18/10; C08G18/50; C09K3/00

WO2010053065A1	2010-05-14
WO2010053065A1	2010-05-14

JPH10330454A	1998-12-15
JPH10506658A	1998-06-30
JPS63168421A	1988-07-12
JP2009235276A	2009-10-15
JP2007308588A	2007-11-29
JPH01115920A	1989-05-09
JP2010280842A	2010-12-16
JPH0214209A	1990-01-18
JP2010275441A	2010-12-09
JPH0753788B2	1995-06-07

See also references of EP 2930196A4

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