A polyether-based dispersant with a light stabilizing effect

A polymer P obtained by reacting:

• at least one polyether A;
• at least one hindered amine light stabilizer (HALS) H selected from H1, H2, H3, H4, H5, H6, or mixtures thereof, and
• at least one compound B having at least one functional group selected from the group consisting of ester, isocyanate, anhydride, carboxylic acid, or epoxide, and the at least one compound B is selected from B1, B2, B3, B4, B5, or mixtures thereof,
• or
• at least one polyether A;
• and
• at least one hindered amine light stabilizer selected from H2, H4, H6, or mixtures thereof;
• wherein,
• the at least one polyether A is selected from at least one polyether of general formula A(a), at least one polyether of general formula A(b), or mixtures thereof;
• wherein
• (a) the at least one polyether of general formula A(a) is
• wherein
• R1 is selected from linear or branched, substituted or unsubstituted C1-C22 alkyl, linear or branched, substituted or unsubstituted C1-C22 alkylenyl, substituted or unsubstituted C6-C15 alkylaryl, or substituted or unsubstituted C6-C14 aryl,
• R2 is selected from linear or branched, substituted or unsubstituted C1-C4 alkyl;
• m is an integer in range of 1 to 100;
• n is an integer in range of 0 to 100;
• m units and n units are distributed to form a random copolymer or a block copolymer or a gradient copolymer;
• and
• Z is selected from —OH, —NH2, or —NHR3, wherein R3 is selected from linear or branched, substituted or unsubstituted C1-C22 alkyl;
• and
• (b) the at least one polyether of general formula A(b) is obtainable by reacting at least one polyether of general formula A(a)
• wherein
• R1, R2, m, n, and Z are as defined above;
• with at least one compound of formula (E)
• wherein,
• R4 is selected from linear or branched, substituted or unsubstituted C1-C22 alkyl, linear or branched, substituted or unsubstituted C1-C22 alkylenyl, substituted or unsubstituted C6-C15 alkylaryl, or substituted or unsubstituted C6-C14 aryl, and
• X is selected from O, S or CH2;
• and wherein the molar ratio of the at least one polyether of general formula A(a) and the at least one compound of formula (E) is in the range from 1:0.8 to 1:5;
• and
• wherein,
• a) the hindered amine light stabilizer (HALS) of general formula H1 is
• wherein
• R5 and R6 are independently selected from H, or substituted or unsubstituted C1-4 alkyl;
• R7 is selected from —OH, —NH2, —NHR9, —R10—OH, —R10—NH2, or —R10—NHR9;
• R8 is selected from —H, —O, linear or branched, substituted or unsubstituted C1-C22 alkyl, linear or branched, substituted or unsubstituted C3-C8 cycloalkyl, —OR11, —R12—OH,— or —O—R12—OH;
• wherein
• R9, and R11 are independently selected from linear or branched, substituted or unsubstituted C1-C22 alkyl;
• and
• wherein
• R10 and R12 are independently selected from linear or branched, substituted or unsubstituted C1-C22 alkylene;
• b) the hindered amine light stabilizer (HALS) H2 is a HALS copolymer comprising
• (i) 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol;
• and
• (ii) at least one dicarboxylic ester of general formula
• wherein,
• R13 is selected from linear or branched, substituted or unsubstituted C1-C12 alkyl;
• and
• R14 is selected from linear or branched, substituted or unsubstituted C2-C12 alkylene;
• c) the hindered amine light stabilizer (HALS) of general formula H3 is a triazine based dimer having —NH or —OH-functionality
• wherein,
• R5, R6, and R8 are as defined above;
• R15 is selected from H, or linear or branched, substituted or unsubstituted C1-C6 alkyl;
• R16 is selected from H, or linear or branched, substituted or unsubstituted C1-C6 alkyl;
• R17 is selected from —H, or —R18—OH, wherein R18 is selected from linear or branched, substituted or unsubstituted C1-C22 alkylene;
• d) the hindered amine light stabilizer (HALS) of general formula H4 is a diester or carbonate functionalized HALS compound
• wherein,
• R5, R6, and R8 are as defined above;
• L1 is
• wherein
• * indicates point of attachment to O, and
• R19 is selected from linear or branched, substituted or unsubstituted C1-C22 alkylene;
• e) the hindered amine light stabilizer (HALS) H5 is a triazine substituted alkylamine-based oligomer having NH-functionality 1,5,8,12-tetrakis[4,6-bis(Nbutyl-N-1,2,2,6,6-pentamethyl-4-piperidylamino)-1,3,5-triazin-2-yl]-1,5,8,12-tetraazadodecane;
• f) the hindered amine light stabilizer (HALS) H6 is a polyol polyester tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl) butane-1,2,3,4-tetracarboxylate;
• and
• wherein,
• B1 is at least one diester or polyester of general formula R20(COOR21)q;
• wherein
• R20 is selected from linear or branched, substituted or unsubstituted C1-C22-alkylene, or substituted or unsubstituted C6-C10 arylene;
• R21 is selected from linear or branched, substituted or unsubstituted C1-C12-alkyl;
• and
• q is an integer in the range of 2 to 5;
• B2 is at least one phthalic anhydride derivative of general formula
• wherein
• R22 is selected from 4-COOH, 4-NO2, 4-F, 4-Cl, or 4-Br;
• B3 is at least one a diisocyanate or polyisocyanate of general formula
• wherein,
• G is selected from a linear or branched, substituted or unsubstituted C2-C22 alkyl, linear or branched, substituted or unsubstituted C3-C8 cycloalkyl, or substituted or unsubstituted C6-C14 arylene, and
• r is 2 or 3 or 4;
• B4 is at least one epoxy polymer;
• and
• B5 is at least one maleic anhydride polymer.