Title:
ACRYLIC POLYMER COAGULATES
Document Type and Number:
WIPO Patent Application WO/2019/146782
Kind Code:
A1
Abstract:
The present invention provides multilayer acrylic polymer coagulates. The multilayer acrylic polymer coagulates are characterized by having a bulk density of 0.3–0.6 g/cm3 and a median diameter of 50–400 μm. The multilayer acrylic polymer coagulates are also characterized in that no more than 50% of particles have a particle diameter of 75 μm or shorter and in that the alkali metals and alkali earth metals contained therein satisfy formula (1). (1) Σ(N/a)×(120-Tg)≤100, N being the amount (mmol/kg) of the alkali metals and alkali earth metals contained in the coagulates, Tg being the glass transition temperature (°C) of an acetone-soluble fraction, and a being the valence of the alkali metals and alkali earth metals contained in the coagulates.
Inventors:
NIIMURA TAKURO (JP)
AKARI MASASHI (JP)
OZAWA HIROSHI (JP)
AKARI MASASHI (JP)
OZAWA HIROSHI (JP)
Application Number:
PCT/JP2019/002731
Publication Date:
August 01, 2019
Filing Date:
January 28, 2019
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08F6/22; C08F265/00
Foreign References:
| JP2000119476A | 2000-04-25 | |||
| JPH1017626A | 1998-01-20 | |||
| JP2003321549A | 2003-11-14 | |||
| JP2003342321A | 2003-12-03 | |||
| JP2001247621A | 2001-09-11 | |||
| JP2009013318A | 2009-01-22 | |||
| JP2003277528A | 2003-10-02 | |||
| JP2017061646A | 2017-03-30 | |||
| JP2017061645A | 2017-03-30 |
Other References:
See also references of EP 3747914A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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