US 11,873,230 B2
Hydrotalcite particles, method for producing hydrotalcite particles, resin stabilizer containing hydrotalcite particles, and resin composition containing hydrotalcite particles
Koji Kakuya, Sanyoonoda (JP); Atsuko Yasunaga, Sanyoonoda (JP); and Nobukatsu Shigi, Sakai (JP)
Assigned to TODA KOGYO CORP., Hiroshima (JP); and SAKAI CHEMICAL INDUSTRY CO., LTD., Sakai (JP)
Appl. No. 16/957,711
Filed by TODA KOGYO CORP., Hiroshima (JP); and SAKAI CHEMICAL INDUSTRY CO., LTD., Sakai (JP)
PCT Filed Dec. 17, 2018, PCT No. PCT/JP2018/046380
§ 371(c)(1), (2) Date Jun. 24, 2020,
PCT Pub. No. WO2019/131281, PCT Pub. Date Jul. 4, 2019.
Claims priority of application No. 2017-247552 (JP), filed on Dec. 25, 2017.
Prior Publication US 2020/0361780 A1, Nov. 19, 2020
Int. Cl. C01F 7/785 (2022.01); C08L 101/00 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC C01F 7/785 (2022.01) [C08L 101/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01P 2002/60 (2013.01); C01P 2002/72 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. Hydrotalcite particles having a ratio of an intensity to a half value width, intensity/half value width, of higher than or equal to 4000 cps/degree, the intensity and the half value width being values of a diffraction peak of crystal plane (015) in an X-ray diffraction pattern, wherein the hydrotalcite particles are produced by a method comprising:
dissolving aluminum hydroxide in an alkaline solution to prepare an aluminate solution;
causing a reaction of the aluminate solution with carbon dioxide to precipitate a low-crystallinity aluminum compound;
causing a first-order reaction by mixing the low-crystallinity aluminum compound with a magnesium compound to prepare a reactant containing hydrotalcite nuclear particles; and
causing a hydrothermal reaction of the reactant to synthesize hydrotalcite particles.