Title:
O/W TYPE EMULSION COMPOSITION CONTAINING POLYMER
Document Type and Number:
WIPO Patent Application WO/2022/138480
Kind Code:
A1
Abstract:
Provided is an O/W type emulsion composition having improved emulsification stability. More particularly, provided is an O/W type emulsion composition containing a water absorbent polymer, wherein the water absorbent polymer satisfies the following conditions (A), (B) and (C): (A) after swelling with water, having a particle size of 100 to 600 μm; (B) satisfying the following conditions (B-1) and/or (B-2): (B-1) in a double logarithmic graph of the steady-state flow viscosity of a 1 mass% aqueous solution of the polymer, the inclination being -1 or more and less than 0 (in the shear rate range of 0.1 to 1,000 s-1); and (B-2) the yield stress/yield strain balance of the 1 mass% aqueous solution of the polymer being 10 or more; and (C) when an aqueous solution of 1 mass% of the polymer and 0.5 mass% of sodium chloride is sieved through a sieve with a 75 µm aperture, the amount of the polymer remaining on the sieve being 50 mass% or less of the amount of the polymer contained in the aqueous solution.
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Inventors:
MIYAMOTO MAKIKO (JP)
YAMAGUCHI HIROFUMI (JP)
YAMAGUCHI HIROFUMI (JP)
Application Number:
PCT/JP2021/046704
Publication Date:
June 30, 2022
Filing Date:
December 17, 2021
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C08F20/04; C08K3/36; C08K5/00; C08K5/06; C08L101/14
Domestic Patent References:
| WO2016002751A1 | 2016-01-07 | |||
| WO2018198737A1 | 2018-11-01 |
Foreign References:
| JP2015224240A | 2015-12-14 | |||
| JP2018095637A | 2018-06-21 | |||
| JP2016023143A | 2016-02-08 | |||
| JP2016147813A | 2016-08-18 | |||
| JP2017081875A | 2017-05-18 |
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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