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Title:
AQUEOUS COATING COMPOSITION AND COATING FILM
Document Type and Number:
WIPO Patent Application WO/2017/155064
Kind Code:
A1
Abstract:
Provided are an aqueous coating composition and a coating film that are capable of achieving an even higher level of both contamination resistance and weathering resistance. The aqueous coating composition includes a polymer emulsion (α) and an aqueous polymer (β), namely: (α) a polymer emulsion which includes an organosiloxane polymer block (I) having a specific organosiloxane unit and a polymer block (II) of an ethylenically unsaturated monomer; and (β) an aqueous polymer which is a copolymer formed from 40 mol% to less than 100 mol% of one type of ethylenically unsaturated monomer having an amide group and/or an amino group and more than 0 mol% to 60 mol% of at least one type of other ethylenically unsaturated monomer, a homopolymer formed from one type of ethylenically unsaturated monomer having an amide group and/or an amino group, or a copolymer formed from at least two types of ethylenically unsaturated monomers having an amide group and/or an amino group. In addition, the coating film includes a binder component and inorganic particles having an average particle size of 100 nm or smaller, the area occupied by the inorganic particles in the coating film surface being no larger than 49.9% and the average domain size of the inorganic particles being at least 500 square nanometers.

Inventors:
MOTOYAMA KEIKO (JP)
KAMIYAMA YASUYUKI (JP)
Application Number:
PCT/JP2017/009595
Publication Date:
September 14, 2017
Filing Date:
March 09, 2017
Export Citation:
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Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C09D183/10; C08F230/08; C09D5/02; C09D7/12; C09D201/02; C09D5/16
Domestic Patent References:
WO2010143413A12010-12-16
WO2007069596A12007-06-21
Foreign References:
JP2006342280A2006-12-21
JP2002206041A2002-07-26
JP2011189273A2011-09-29
JP2008106163A2008-05-08
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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