Polyether-modified polybutadienes and processes for preparation thereof
AssigneeEvonik Operations GmbH
InventorsFrank Schubert, Frauke Henning, Sarah Otto, Frank Dzialkowsky, Heike Hahn
Life of this patent
Estimating the term…
Abstract
A process can be used for preparing polyether-modified polybutadienes. The process involves reacting at least one polybutadiene (A) with at least one epoxidizing reagent (B) to give at least one epoxy-functional polybutadiene (C). The at least one epoxy-functional polybutadiene (C) is then reacted with at least one hydroxy-functional compound (D) to give at least one hydroxy-functional polybutadiene (E). The at least one hydroxy-functional polybutadiene (E) is finally reacted with at least one epoxy-functional compound (F) to give at least one polyether-modified polybutadiene (G).
Claims23
A process for preparing one or more polyether-modified polybutadienes, comprising:
- a) reacting at least one polybutadiene (A) with at least one epoxidizing reagent (B) to give at least one epoxy-functional polybutadiene (C);
- b) reacting the at least one epoxy-functional polybutadiene (C) with at least one hydroxy-functional compound (D) to give at least one hydroxy-functional polybutadiene (E);
- and
- c) reacting the at least one hydroxy-functional polybutadiene (E) with at least one epoxy-functional compound (F) to give at least one polyether-modified polybutadiene (G);
- wherein the reacting in b) is an addition reaction of the at least one hydroxy-functional compound (D) onto the at least one epoxy-functional polybutadiene (C), and said at least one hydroxy-functional compound (D) is at least one compound selected from the group consisting of a mono-alcohol, a carboxylic acid or water.
A polyether-modified polybutadiene, comprising repeat units selected from the group consisting of divalent radicals
- wherein
- OA is in each case independently derived from a mono-alcohol HO—A or —O— acyl,
- B is in each case independently a radical of the formula (4a)
- R1 is in each case independently a monovalent hydrocarbon radical having 1 to 16 carbon atoms,
- R2 is a radical of the formula —CH2—O—R3;
- R3 is in each case independently a monovalent hydrocarbon radical having 3 to 18 carbon atoms;
- R4 is in each case independently a monovalent organic radical having 1 to 18 carbon atoms or hydrogen;
- and
- m, n, o, p and q are each independently 0 to 300, with the proviso that the sum total of m, n, o, p and q is greater than 1;
- for every permutation of the repeat units (U), (V), (W), (X), (Y) and (Z) and of repeat units in B.
Dependencies are inferred from the claim text.