Polyester polyol comprising an imide moiety and methods of manufacture thereof
A method of forming an aromatic polyester polyol compound comprising an imide moiety, wherein the method comprises reacting: (i) a cyclic anhydride compound; (ii) a phthalic acid based compound; (iii) a primary amine compound; and (iv) an aliphatic diol compound.
1 . A method for forming an aromatic polyester polyol compound comprising an imide moiety, wherein the method comprises reacting a reactive mixture comprising:
(i) a cyclic anhydride compound comprising Structure (1), Structure (2), or combinations thereof;
wherein X is a cyclic anhydride moiety, OH, or COOH, which attached directly to the structure or through R which is an aromatic ring, aliphatic ring, aliphatic chain radical each containing from 1 through 12 carbon atoms with or without alkyl branches, and with or without hetero atoms comprising, O, N, S etc. and n is an integer from 0 through 1;
wherein Component (i) is present in an amount of 3% to 20% by weight based on a total weight of the reactive mixture;
(ii) a phthalic acid based compound, wherein Component (ii) is present in an amount of 2% to 40% by weight based on the total weight of the reactive mixture,
(iii) a primary amine compound comprising Structure (3);
NH 2 —R—X Structure (3)
wherein X is —NH2, —OH or —COOH, and R is an aromatic ring, aliphatic ring, aliphatic chain radical each containing from 1 through 12 carbon atoms with or without alkyl branches, and with or without hetero atoms comprising, O, N, S, or combinations thereof;
wherein Component (iii) is present in an amount of 1% to 15% by weight based on the total weight of the reactive mixture;
(iv) an aliphatic diol compound, wherein Component (iv) is present in an amount of 40% to 70% by weight based on the total weight of the reactive mixture;
(v) optionally, a high functionality, low molecular weight polyether polyol compound;
(vi) optionally, a hydrophobic compound; and
wherein the weight ratio of Component (i) to Component (ii) is from 1:24 to 24:1; and wherein the aromatic polyester polyol is liquid at 25° C. and comprises a hydroxy value ranging from about 30 to about 600.
2 . The method according to claim 1 , wherein the viscosity of the aromatic polyester polyol compound ranges from about 200 to about 150,000 centipoises at 25° C.
3 . The method according to claim 1 , wherein the acid value of the aromatic polyester polyol compound ranges from about 0.1 mg of KOH/g to about 10 mg of KOH/g.
4 . The method according to claim 1 , wherein the method comprises reacting Components (i), (ii), (iii), and (iv) in a single pot synthesis process.
5 . The method according to claim 1 , wherein the reaction does not occur in the presence of a solvent.
6 . The method according to claim 1 , wherein the aromatic polyester polyol compound has a better thermal stability than a non-imide moiety containing aromatic polyester polyol compound having similar aromatic content, hydroxy number, functionality, and acid value.
7 . An aromatic polyester polyol compound comprising an imide moiety, wherein the aromatic polyester polyol is the reaction product of a reactive mixture comprising:
(i) a cyclic anhydride compound comprising Structure (1), Structure (2), or combinations thereof;
wherein X is a cyclic anhydride moiety, OH, or COOH, which attached directly to the structure or through R which is an aromatic ring, aliphatic ring, aliphatic chain radical each containing from 1 through 12 carbon atoms with or without alkyl branches, and with or without hetero atoms comprising, O, N, S etc. and n is an integer from 0 through 1;
wherein Component (i) is present in an amount of 3% to 20% by weight based on a total weight of the reactive mixture;
(ii) a phthalic acid based compound, wherein Component (ii) is present in an amount of 2% to 40% by weight based on the total weight of the reactive mixture,
(iii) a primary amine compound comprising Structure (3);
NH 2 —R—X Structure (3)
wherein X is —NH2, —OH or —COOH, and R is an aromatic ring, aliphatic ring, aliphatic chain radical each containing from 1 through 12 carbon atoms with or without alkyl branches, and with or without hetero atoms comprising, O, N, S, or combinations thereof;
wherein Component (iii) is present in an amount of 1% to 15% by weight based on the total weight of the reactive mixture;
(iv) an aliphatic diol compound, wherein Component (iv) is present in an amount of 40% to 70% by weight based on the total weight of the reactive mixture;
(v) optionally, a high functionality, low molecular weight polyether polyol compound;
(vi) optionally, a hydrophobic compound; and
wherein the weight ratio of Component (i) to Component (ii) is from 1:24 to 24:1; and wherein the aromatic polyester polyol is liquid at 25° C. and comprises a hydroxy value ranging from about 30 to about 600.
8 . The aromatic polyester polyol compound according to claim 7 , wherein the viscosity of the aromatic polyester polyol compound ranges from about 200 to about 150,000 centipoises at 25° C.
9 . The aromatic polyester polyol compound according to claim 7 , wherein the acid value of the aromatic polyester polyol compound ranges from about 0.1 mg of KOH/g to about 10 mg of KOH/g.
10 . The aromatic polyester polyol compound according to claim 7 , wherein the method comprises reacting Components (i), (ii), (iii), and (iv) in a single pot synthesis process.
11 . The aromatic polyester polyol compound according to claim 7 , wherein the reaction does not occur in the presence of a solvent.
12 . The aromatic polyester polyol compound according claim 7 , wherein the aromatic polyester polyol compound has a better thermal stability than a non-imide moiety containing aromatic polyester polyol compound having similar aromatic content, hydroxy number, functionality, and acid value.
13 . The method according to claim 1 , wherein Component (v) is present in the reaction mixture.
14 . The method according to claim 1 , wherein Component (vi) is present in the reaction mixture.
15 . The method according to claim 1 , wherein Component (v) and Component (vi) are present in the reaction mixture.