US 12,006,418 B2
Binder composition, rigid body, and method for manufacturing rigid body
Yuichi Kawata, Suita (JP); and Ikuo Shimizu, Suita (JP)
Assigned to Nippon Shokubai Co., Ltd., Osaka (JP)
Appl. No. 16/641,364
Filed by Nippon Shokubai Co., Ltd., Osaka (JP)
PCT Filed Aug. 9, 2018, PCT No. PCT/JP2018/029950
§ 371(c)(1), (2) Date Feb. 24, 2020,
PCT Pub. No. WO2019/049604, PCT Pub. Date Mar. 14, 2019.
Claims priority of application No. 2017-170596 (JP), filed on Sep. 5, 2017.
Prior Publication US 2020/0190285 A1, Jun. 18, 2020
Int. Cl. C08K 5/47 (2006.01); C08G 18/62 (2006.01); C08K 3/40 (2006.01); C08K 5/37 (2006.01); C08K 5/46 (2006.01); C08K 7/14 (2006.01)
CPC C08K 5/47 (2013.01) [C08G 18/6225 (2013.01); C08K 3/40 (2013.01); C08K 5/37 (2013.01); C08K 5/46 (2013.01); C08K 7/14 (2013.01)] 25 Claims
 
1. A binder composition comprising
a rust inhibitor comprising at least one selected from the group consisting of 2-Mercaptothiazoline, 2-Amino-5-mercapto-1,3,4-thiadiazole, 2,2′-Dibenzothiazole disulfide, 3-Mercaptopropionic acid, 3,3′-Dithiodipropionic acid, 1,3-Diethyl-2-thiourea, L-cysteine, L-cystine, 2-Mercaptobenzothiazole, 2-Mercaptobenzothiazole sodium, 2,5-dimercapto-1,3,4-thiadiazole, 2-thioacetic acid-5-mercapto-1,3,4-thiadiazole, and 2,5-dithioacetic acid-1,3,4-thiadiazole, and
a carboxyl group-containing polymer, in which a percentage of structural units containing a carboxyl group to the total structural units constituting the carboxyl group-containing polymer is 50 mol % or more,
wherein the binder composition is an aqueous solution, and a pH of the aqueous solution is 1 or more and less than 5,
wherein the content of the rust inhibitor in the binder composition is 10 to 3000 ppm, and
wherein the composition causes a weight reduction of less than 0.5% to a rolled steel sheet having an opening (grate: SPCC-SD, size: a thickness of 1 mm, a length of 30 mm, and a width of 30 mm) hung with a string-like Teflon® and immersed into the binder composition.