公开(公告)号：US20240191018A1

公开(公告)日：2024-06-13

申请号：US18286773

申请日：2022-04-11

Applicant: BASF SE

Inventor： Samane MEHRAVAR ,  Manfred DARGATZ ,  Paola URIBE AROCHA ,  Daniel VON NESSEN ,  Chintankumar Jayantilal PATEL

IPC: C08G18/34 ,  C08G18/10 ,  C09D175/06

CPC classification number: C08G18/348 ,  C08G18/10 ,  C09D175/06 ,  C08G2650/36

Abstract: The present invention relates a process of the present invention for the preparation of an aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof, comprises the steps of (i) reacting at least one first polyisocyanate (A1) with at least one polyol carrying at least one COOH group (BX) and optionally at least one first polyol carrying no COOH group (B1) to form a first composition (C1), (ii) treating the first composition (C1) obtained in step (i) with at least one second polyol carrying no COOH group (B2), and optionally with at least one second polyisocyanate (A2), to form a second composition (C2), and (iii) optionally treating the second composition (C2) obtained in step (ii) with at least one third-polyisocyanate (A3), to form a third composition (C3), wherein step (i) is stopped at a reaction index in the range of 0.05 to 0.94, wherein reaction index=reaction rate×[mol initial NCO groups of all A1/(mol initial OH groups of all BX and, if present, mol initial OH groups of all B1)] (formula 1) wherein reaction rate=1 minus (mol NCO groups of C1/mol initial NCO groups of all A1), and to an aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof obtainableby this process, to a process for the preparation of an aqueous composition comprising a polyurethane/poly(meth)acrylate hybrid polymer using the aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof of the present invention, to aqueous compositions comprising a polyurethane/poly(meth)acrylate hybrid polymer obtainable by the this process, to coating compositions comprising the aqueous composition comprising a polyurethane carrying COOH groups and/or salt groups thereof or the aqueous compositions comprising a polyurethane/poly(meth)acrylate hybrid polymer, and to substrates coated with these coating compositions.

公开(公告)号：US20230374192A1

公开(公告)日：2023-11-23

申请号：US18027677

申请日：2021-09-14

Applicant: BASF SE

Inventor： Samane MEHRAVAR ,  Paola URIBE AROCHA ,  Daniel VON NESSEN ,  Konrad ROSCHMANN ,  Florian Ludwig GEYER ,  Mo Kit CHAU ,  Florian SCHLUETTER ,  Juergen KACZUN ,  David TUERP

IPC: C08G18/42 ,  C08G63/20 ,  C08G63/91 ,  C08G18/32 ,  C08G18/34 ,  C08G18/66 ,  C08G18/75 ,  C08K5/25 ,  C09D175/12 ,  C09D7/63 ,  C09D7/20 ,  C09D15/00

CPC classification number: C08G18/4241 ,  C08G63/20 ,  C08G63/916 ,  C08G18/4216 ,  C08G18/4202 ,  C08G18/3206 ,  C08G18/348 ,  C08G18/3234 ,  C08G18/3275 ,  C08G18/3228 ,  C08G18/6659 ,  C08G18/755 ,  C08K5/25 ,  C09D175/12 ,  C09D7/63 ,  C09D7/20 ,  C09D15/00

Abstract: The present invention relates to polyester polyols (1) carrying at least one keto-type C═O group derived from HO—C(═O)—L1—C(═O)—R1 (1i) or from a derivative thereof, wherein L1 is a linking group and R1 is selected from the group consisting of C1-20-alkyl, C5-8-cycloalkyl, C6-10-aryl and C7-20-aralkyl, to aqueous polyurethane dispersions (PUD) comprising at least one polyurethane (2) carrying at least one keto-type C═O group, water, and optionally at least one organic solvent (4), wherein the at least one polyurethane (2) carrying at least one keto-type C═O group comprises units derived from at least one polyester polyol (1), to aqueous self-crosslinkable polyurethane dispersions (SC-PUD) comprising at least one polyurethane (2) carrying at least one keto-type C═O group, at least one compound (3) carrying at least two keto-type C═O group reactive groups, water, and optionally at least one organic solvent (4), wherein the at least one polyurethane (2) carrying at least one keto-type C═O group comprises units derived from at least one polyester polyol (1), to aqueous self-crosslinkable polyurethane coating composition comprising the aqueous self-crosslinkable polyurethane dispersion (SC-PUD) optionally at least one organic solvent (5), at least one coating composition additive (6), optionally at least one polymer (7) different from the polyurethane (2), and optionally at least one monomer (8) carrying at least one olefinically unsaturated group, to substrate coated with the aqueous self-crosslinkable polyurethane coating composition, and to a process for coating the substrate with the aqueous self-crosslinkable polyurethane coating composition.