润滑科技信息平台

专利摘要

本发明涉及一种制备超支化聚酯混合物的方法,该混合物可通过使含羟基的羧酸(B)与至少一个羧酸基团和至少两个羟基基团与分子量为大于100g/mol,任选在至少一种另外的反应物存在下,其中所述至少一种另外的反应物是在允许形成酯和醚的反应条件下具有至少三个羟基的多元醇(A); 以及使得自步骤(a)的混合物与疏水性羧酸(D)反应,得到超支化聚酯混合物。本发明还涉及所述超支化聚酯混合物以及作为蜡抑制剂、倾点下降剂、润滑剂或在润滑油中的用途。 ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2019710436
申请日期:
2019-03-19
专利申请人:
分类号:
["C08G83/00","C08G63/06","C08G63/60","C10M171/00","C08G63/78","C08G63/91","C10M101/00","C10M107/32","C10M111/04"]
发明/设计人:
MUELLER-CRISTADORO, ANNA MARIA ， BOHRES, EDWARD ， FRENZEL, STEFAN ， FU, XIAO ， WESTERHAUS, FELIX ALEXANDER ， NOACK, TINA ， KIERAT, RADOSLAW
权利要求: 1. Method for the preparation of a hyperbranched polyester mixture, the method comprising the steps (a) reacting a hydroxyl group containing carboxylic acid (B) with at least one carboxylic acid group and at least two hydroxyl groups with a diol (C) having a molecular weight of more than 100 g/mol, in the presence of at least one further reactant, wherein the at least one further reactant is a polyol (A) having at least three hydroxyl groups under a reaction condition allowing ester and ether formation; and (b) reacting the mixture resulting from step (a) with a hydrophobic carboxylic acid (D) of formula Rh-COOH, wherein Rh is a hydrocarbon radical with at least 10 carbon atoms, or in the form of a salt or activated derivatives of the carboxylic acid group that can be used for ester formation, wherein at least 30 % of terminal OH groups are converted into hydrophobically modified groups by reacting with the hydrophobic carboxylic acid (D), resulting in the hyperbranched polyester mixture.2. The method of claim 1, wherein the reaction condition in step (a) comprises a reaction temperature of more than 80°C, preferably more than 100°C, more preferably more than 120°C, even more preferably more than 140°C.3. The method of claim 1 or 2, wherein the reaction condition in step (a) comprises acidic conditions, preferably in that the reaction in step (a) is carried out in the presence of an acid.4. The method of any one of claims 1 to 3, wherein the molar ratio of carboxylic acid (B) and polyol (A), (B):(A), is from 1000:1 to 10:1.5. The method of any one of claims 1 to 4, wherein the molar ratio of carboxylic acid (B) and diol (C), (B):(C), is from 1000:1 to 10:1.6. The method of any one of claims 1 to 5, wherein the hyperbranched polyester mixture has an acid number of below 100 mg KOH/g, preferably in the range from 50 to 0 mg KOH/g.7. The method of any one of claims 1 to 6, wherein the hyperbranched polyester mixture comprises a polyester showing a partial structure resulting from ether formation of at least one hydroxyl group of polyol (A) with at least one hydroxyl group of diol (C).8. The method of any one of claims 1 to 7, wherein the hyperbranched polyester mixture comprises a polyester showing a partial structure resulting from ester formation of at least one hydroxyl group of polyol (A) with the at least one carboxylic acid group of hydroxyl group containing carboxylic acid (B).9. The method of any one of claims 1 to 8, wherein the hyperbranched polyester mixture comprises a polyester showing a partial structure resulting from ether formation of at least one hydroxyl group of the hydroxyl group containing carboxylic acid (B) with at least one hydroxyl group of diol (C).10. The method of any one of claims 1 to 9, wherein the polyol (A) having at least three hydroxyl groups is a polyol (A) having three hydroxyl groups, preferably the polyol (A) is 1,1,1-trimethylolpropane, glycerol or an alkoxylated derivative of 1,1,1-trimethylolpropane or glycerol, more preferably 1,1,1-trimethylolpropane or glycerol, even more preferably 1,1,1-trimethylolpropane.11. The method of any one of claims 1 to 10, wherein the hydroxyl group containing carboxylic acid (B) with at least one carboxylic acid group and at least two hydroxyl groups is a hydroxyl group containing carboxylic acid (B) with one carboxylic acid group and two hydroxyl groups, preferably dimethylolpropionic acid.12. The method of any one of claims 1 to 11, wherein diol (C) is a polymeric diol, preferably a polyether diol, preferably with a number average molecular weight of at least 150 g/mol.13. The method of any one of claims 1 to 12, wherein hydrophobic carboxylic acid (D) is represented by the formula Rh-COOH, wherein Rh is an aliphatic, linear or branched, saturated or unsaturated, aromatic or non-aromatic hydrocarbon group having 10 to 32 carbon atoms, more preferably 12 to 26, carbon atoms.14. A hyperbranched polyester mixture obtainable by a method of any one of claims 1 to 13.15. Use of a hyperbranched polyester mixture of claim 14 as wax inhibitor, as pour point depressant, as lubricant or in lubricating oils.16. A lubricating oil composition comprising: (a) at least one base oil component, (b) hyperbranched polyester mixture of claim 14, and (c) optionally other additives.