Title:
COATING MATERIAL COMPOSITION, CAN LID, AND CAN FOR FOOD AND BEVERAGES
Document Type and Number:
WIPO Patent Application WO/2016/125445
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a coating material composition and a can lid having excellent contaminated content resistance and alkali resistance and capable of forming a coating film for which the workability does not easily decline with the passage of time. In order to solve this technical problem, the coating material composition comprises: a polyester resin (A) with an acid number of at most 30 mgKOH/g and with a glass transition temperature exceeding 25 degrees Celsius and at most 40 degrees Celsius; a polyester resin (B) with an acid number of at most 30 mgKOH/g and a glass transition temperature of 45-85 degrees Celsius; and a phenol resin (C). The polyester resin (A) is a resin obtained by reacting a polycarboxylic acid (a) and a polyol (b), wherein, of a total 100 mol% of the polycarboxylic acid (a), it is preferable to comprise terephthalic acid at 15-35 mol%, isophthalic acid at 55-80 mol%, and any monomer selected from the group consisting of sebacic acid, adipic acid, and 1, 4-cyclohexanedicarboxylic acid at 1-10 mol%, and wherein, of a total 100 mol% of the polyol (b), it is preferable to comprise 1, 4-butanediol at 40-80 mol% and a diol having a carbon number of 2 or 3 at 5-35 mol%.
Inventors:
SATO SHOYA (JP)
Application Number:
PCT/JP2016/000319
Publication Date:
August 11, 2016
Filing Date:
January 22, 2016
Export Citation:
Assignee:
TOYO INK SC HOLDINGS CO LTD (JP)
TOYOCHEM CO LTD (JP)
TOYOCHEM CO LTD (JP)
International Classes:
C09D167/02; C09D161/06
Domestic Patent References:
| WO2013111814A1 | 2013-08-01 |
Foreign References:
| JP2013249376A | 2013-12-12 | |||
| JP2006077118A | 2006-03-23 | |||
| JP2009221316A | 2009-10-01 | |||
| JP2008542457A | 2008-11-27 |
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
Koichi Washida (JP)
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