公开(公告)号：US20230357591A1

公开(公告)日：2023-11-09

申请号：US17795692

申请日：2021-01-15

Applicant: BASF SE

Inventor： Wolfgang GASCHLER ,  Rodrigo CONIGLIO MOSKOVICS

IPC: C09D133/06 ,  C09D15/00 ,  C09D5/02 ,  C09D7/61 ,  C09D125/14 ,  C08F220/18

CPC classification number: C09D133/064 ,  C09D15/00 ,  C09D5/022 ,  C09D7/61 ,  C09D125/14 ,  C08F220/1808 ,  C08F220/1805 ,  C08F220/1804

Abstract: The present invention relates to a process of coating wood with at least two waterbased coating compositions the process comprising: a) applying a coating composition A comprising at least one anionic polymer A with a Hansch parameter ≤1.6, and drying or allowing to dry said aqueous coating composition A, b) applying a coating composition B comprising at least one anionic polymer B with a Hansch parameter ≥1.7 and pigment, and drying or allowing to dry said aqueous coating composition B, with the proviso that the difference of the Hansch Parameters of anionic polymer B and anionic polymer A is at least 0.5. The invention also relates to wood coated accordingly, and the use of a coating composition A, comprising an aqueous anionic polymer A with a Hansch parameter ≤1.6, as an undercoat for coating wood.