US 12,286,548 B2
Coating agent, adhesive, and coated product
Keisuke Morikawa, Houston, TX (US); Tatsuya Tanida, Frankfurt am Main (DE); and Yuta Taoka, Okayama (JP)
Assigned to KURARAY CO., LTD., Kurashiki (JP)
Appl. No. 17/041,807
Filed by KURARAY CO., LTD., Kurashiki (JP)
PCT Filed Mar. 25, 2019, PCT No. PCT/JP2019/012539
§ 371(c)(1), (2) Date Sep. 25, 2020,
PCT Pub. No. WO2019/189000, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-057528 (JP), filed on Mar. 26, 2018.
Prior Publication US 2021/0009842 A1, Jan. 14, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 129/04 (2006.01); C08K 3/013 (2018.01); C08K 5/00 (2006.01); C09D 133/02 (2006.01); C09J 129/04 (2006.01); C09J 133/02 (2006.01); D21H 19/20 (2006.01)
CPC C09D 129/04 (2013.01) [C08K 3/013 (2018.01); C08K 5/0025 (2013.01); C09D 133/02 (2013.01); C09J 129/04 (2013.01); C09J 133/02 (2013.01); D21H 19/20 (2013.01)] 13 Claims
 
1. A coating agent, comprising a modified vinyl alcohol polymer (A),
the modified vinyl alcohol polymer (A) comprising:
a structural unit derived from a derivative (a) of an ethylenically unsaturated dicarboxylic acid in a content (X) of 0.05 mol % or more and 10 mol % or less;
wherein
a degree of saponification of the modified vinyl alcohol polymer (A) is 80.0 mol % or more and 99.9 mol % or less,
the modified vinyl alcohol polymer (A) is obtained in a particle form wherein 95 mass % or more passes through a sieve having 1.00 mm openings and 30 mass % or more passes through a sieve having 500 μm openings,
the modified vinyl alcohol polymer (A) comprises an alcohol component,
the alcohol component consists of methanol,
a methanol content of the modified vinyl alcohol polymer (A) is less than 3.0 mass % as measured by headspace gas chromatography, and
the modified vinyl alcohol polymer (A) comprises an amount of 0.1 ppm or more and less than 2,000 ppm of a component insoluble in a 90° C., 5 mass % aqueous solution.