Siloxane-containing oil compositions with good spreading properties
AssigneeGoldschmidt GmbH
InventorsWayne Kennedy, Arno Knebelkamp, Peter Lersch, Jörg Simpelkamp, Stephen Wilkowski
Life of this patent
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Abstract
This invention relates to asymmetrical, substituted polysiloxanes which show good compatibility in a variety of oils and improve the spreading behavior of oil-based formulations, to a process for preparing these asymmetrical polysiloxanes and to oil formulations containing said asymmetrical polysiloxanes. The asymmetrical polysiloxanes of this invention are used in herbicidal and pesticidal compositions, in cosmetic and pharmaceutical preparations as well as in industrial applications. The assymmetrical substituted polysiloxanes have the following formula wherein R1, R2, Z a and b are described herein.
Claims14
A method of improving the spreading of oil compositions which comprises the addition of at least one asymmetrically substituted polysiloxanes the formula
- wherein
- R1 and R2 are same or different and represent same or different linear or branched, substituted or unsubstituted, saturated or unsaturated alkyl or aryl groups with 1 to 32 carbon atoms which optionally interrupted by oxygen atoms in the hydrocarbon chains;
- Z is a polyoxyalkylene radical of the structure
- —R3k—Ol—(CnH2n-mR4mO)oR5,
- wherein
- R3 represents the same or different bivalent alkyl or aryl radicals with 1 to 30 carbon atoms,
- R4 represents hydrogen and/or the same or different alkyl or aryl radicals with 1 to 30 carbon atoms,
- R5 represents hydrogen and/or same or different, linear or branched alkyl, aryl or acyl radicals with 1 to 30 carbon atoms, which optionally substituted with hydroxy groups, halogens, unsubstituted or substituted alkyl, aryl, alkyloxy or aryloxy groups with 1 to 24 carbon atoms,
- k equals 0 or 1,
- equals 0 or 1,
- m equals 0 or 1,
- n equals 2 or 4,
- o equals values from 1 to 100;
- a equals 0 or 1, and
- b equals 0 to 200.
An oil composition having improved spreading properties which comprises 99.9% to 50% by weight of one or several oils;
- and 0.01% to 50% by weight of an organosilicone composition comprising asymmetrically substituted polysiloxanes according to formula (I)
- wherein
- R1 and R2 are same or different and represent same or different linear or branched, substituted or unsubstituted, saturated or unsaturated alkyl or aryl groups with 1 to 32 carbon atoms which optionally interrupted by oxygen atoms in the hydrocarbon chains;
- Z is a polyoxyalkylene radical of the structure
- —R3k—O1—(CnH2n-mR4mO)oR5,
- wherein
- R3 represents the same or different bivalent alkyl or aryl radicals with 1 to 30 carbon atoms,
- R4 represents hydrogen and/or the same or different alkyl or aryl radicals with 1 to 30 carbon atoms,
- R5 represents hydrogen and/or same or different, linear or branched alkyl, aryl or acyl radicals with 1 to 30 carbon atoms, which optionally substituted with hydroxy groups, halogens,
- unsubstituted or halogensubstituted alkyl, aryl, alkyloxy or aryloxy groups with 1 to 24 carbon atoms,
- k equals 0 or 1,
- l equals 0 or 1,
- m equals 0 or 1,
- n equals 2 or 4, o equals values from 1 to 100;
- a equals 0 or 1, and
- b equals 0 to 200;
- and, optionally, one or several symmetrical polysiloxanes according to the formula (II)
- wherein R1, R2 and Z assume the meaning defined above, R6 assumes the meaning of R2 or that of Z, f, g and h are 0 to 200, and which optionally contain branching units of the structure
- [R6SiO3/2].
Dependencies are inferred from the claim text.