US 12,071,552 B2
Alcohol-based dry erasable ink for writing instrument
Carine Bethouart, Neufchatel-Hardelot (FR)
Assigned to SOCIÉTÉ BIC, Clichy (FR)
Appl. No. 17/280,002
Filed by Société BIC, Clichy (FR)
PCT Filed Sep. 23, 2019, PCT No. PCT/EP2019/075563
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/064652, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 18306251 (EP), filed on Sep. 26, 2018.
Prior Publication US 2021/0395542 A1, Dec. 23, 2021
Int. Cl. C09D 11/00 (2014.01); C09D 11/17 (2014.01)
CPC C09D 11/17 (2013.01) 20 Claims
 
1. Alcohol-based dry erasable ink for writing instrument comprising as separating agent, advantageously as the only separating agent, a mixture of a pentaerythritol tetraester (a1), a fatty acid monoester (a2) and a fatty acid diester (a3).