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US 2014/0179894 A1Published application
Process for preparing branched polyethercarbonates and use thereof
AssigneeEvonik Degussa GmbH
InventorsMatthias Lobert, Sarah Schmitz, Frank Schubert, Roland Hubel, Helmut Hahnel
Life of this patent
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Abstract
The present invention relates to a process for preparing branched polyethers and/or polyether-like structures, to these branched polyethers themselves, and to their use.
Claims14
A process for preparing branched polyethers or polyether-like structures, comprising:
- (a) reacting a starter of the general formula (II) with one or more reactants suitable for ring-opening polymerization to obtain a first reaction mixture, wherein formula (II) is:
- Z(X—H)j (II);
- where:
- X independently at each occurrence O, NH, N-alkyl, N-aryl or S;
- j=1-10;
- and
- Z=any organic radical, with each X being linked to a carbon atom of the organic radical;
- (b) reacting the first reaction mixture obtained in step (a) with glycerol carbonate to obtain a second reaction mixture;
- and
- (c) reacting the second reaction mixture obtained in step (b) with one or more reactants suitable for ring-opening polymerization.
7 more elements
A compound of the formula (I):
- Z(—X-M1i1-M2i2-M3i3-M4i4-M5i5-M6i6-M7i7-M8i8-M9i9-M10i10-M11i11-Ji12)i(-X-J)k (I)
- where:
- i=1 to 10;
- k=0 to 9;
- i+k=1 to 10;
- i1 to i12=each independently of one another 0 to 500;
- X=identically or differently O, NH, N-alkyl, N-aryl, or S,
- Z=any desired organic radical, with each X being linked to a carbon atom of the organic radical;
- J=independently at each occurrence is selected from the group consisting of:
- hydrogen;
- a linear, cyclic, or branched, aliphatic or aromatic, saturated or unsaturated hydrocarbon radical having 1 up to 30 C atoms;
- a carboxylic acid radical having 1 to 30 carbon atoms;
- and
- a functional, organic, saturated or unsaturated radical substituted by heteroatoms;
- where, in M3, X1 to X4 are each independently of one another:
- hydrogen;
- or
- a linear, cyclic, or branched, aliphatic or aromatic, saturated or unsaturated hydrocarbon radical having 1 to 50 C atoms, and may optionally contain halogen atoms;
- with the proviso that X1 to X4 are not selected such that M3 is the same as M1 or M2,
- where Y independently at each occurrence is a linear, cyclic, or branched, aliphatic or aromatic, saturated or unsaturated hydrocarbon radical having 2 to 30 C atoms, and optionally contain heteroatoms;
- where R1 and R2 are each independently of one another either:
- hydrogen or
- an alkyl, alkoxy, aryl, or aralkyl group;
- and
- n independently in each of unit M10 is 3 to 8;
- and R1 and R2 in each unit M10 are identical or different;
- where:
- R3, R4, R5, and R6 are each independently of one another hydrogen or an organic radical;
- T may or may not be present;
- and
- m and o are each independently of one another 1 to 8;
- with the proviso that R3 and R6 optionally form a bond;
- and
- with the proviso that, when R4 and R5 are each a hydrocarbon radical, the radicals R4 and R5 optionally are bridged cycloaliphatically or aromatically via the fragment T, where T represents either a divalent alkylene or alkenylene radical which is optionally further substituted;
- and
- where the indices m and o and the radicals T, R3, R4, R5, and R6 in each unit M11 are identical or different;
- where the units M1 to M11 may be arranged in any proportions, and blockwise, in alternation or at random, and mar, optionally also have a distribution gradient;
- and
- where the units M1 to M4 in particular are freely permutable;
- with the provisos that:
- i9 is >0;
- at least one unit M5 or M6 is present and is adjoined at no end directly by a radical J and at each end by at least one unit selected from M1, M2 and M3;
- and
- two units of the type M9 do not follow one another.
41 more elements
Dependencies are inferred from the claim text.