Process for preparing organosiloxanes
First Claim
1. A process for preparing organosiloxanes (1) of the general formula
in which R is selected from the group consisting of a hydrogen atom, a monovalent hydrocarbon radical having from 1 to 18 carbon atoms per radical and a substituted monovalent hydrocarbon radical having from 1 to 18 carbon atom per radical, R1 is selected from the group consisting of R and a chlorine atom, and n is 3 or 4, which comprises reacting an organodisiloxane (2) of the general formula
space="preserve" listing-type="equation">(R.sub.3 Si).sub.2 O,with a chlorosilane (3) of the general formula
space="preserve" listing-type="equation">R.sub.4-n SiCl.sub.n,in which R and n are the same as above, in the presence of phosphonitrile chlorides (4) and a cocatalyst (5), in which the cocatalyst (5) is used concomitantly with the phosphonitrile chlorides (4) and is selected from the group consisting of amides of the general formula
space="preserve" listing-type="equation">X-C(O)-R.sup.2,in which R2 is selected from the group consisting of a hydrogen atom, a monovalent hydrocarbon radical having from 1 to 8 carbon atoms per radical and a substituted monovalent hydrocarbon radical having from 1 to 8 carbon atom per radical, and X is selected from th consisting of a radical of the formula R22 N- and ##STR4## where R2 is the same as above and R3 is a divalent hydrocarbon radical having from 5 to 7 carbon atoms per radical, urea, urea derivatives of the general formula
space="preserve" listing-type="equation">X-C(O)-X,where X is the same as above and cyanuric acid.
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Accused Products
Abstract
Organosiloxanes (1) of the general formula
R.sup.1.sub.4-n Si(OSiR.sub.3).sub.n,
in which R is the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 18 carbon atom(s) per radical or a substituted monovalent hydrocarbon radical having from 1 to 18 carbon atom(s) per radical, R1 represents R or a chlorine atom, and n is 3 or 4, are prepared by reacting organodisiloxanes (2) of the general formula
(R.sub.3 Si).sub.2 O,
with chlorosilanes (3) of the general formula
R.sub.4-n SiCl.sub.n,
in which R and n are the same as above, in the presence of phosphonitrile chlorides (4) and cocatalysts (5), in which the cocatalysts (5) are used concomitantly with the phosphonitrile chlorides (4) and are selected from the group consisting of amides of the general formula
X--C(O)--R.sup.2,
in which R2 is the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 8 carbon atom(s) per radical or a substituted monovalent hydrocarbon radical having from 1 to 8 carbon atom(s) per radical, and X reresents a radical of the formula R22 N- or ##STR1## where R2 is the same as above, R3 represents a divalent hydrocarbon radical having from 5 to 7 carbon atoms per radical, urea or urea derivatives of the general formula
X--C(O)--X,
where X is the same as above and cyanuric acid.
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Citations
9 Claims
- 1. A process for preparing organosiloxanes (1) of the general formula
- space="preserve" listing-type="equation">R.sub.4-n.sup.1 Si(OSiR.sub.3).sub.n,
in which R is selected from the group consisting of a hydrogen atom, a monovalent hydrocarbon radical having from 1 to 18 carbon atoms per radical and a substituted monovalent hydrocarbon radical having from 1 to 18 carbon atom per radical, R1 is selected from the group consisting of R and a chlorine atom, and n is 3 or 4, which comprises reacting an organodisiloxane (2) of the general formula
space="preserve" listing-type="equation">(R.sub.3 Si).sub.2 O,with a chlorosilane (3) of the general formula
space="preserve" listing-type="equation">R.sub.4-n SiCl.sub.n,in which R and n are the same as above, in the presence of phosphonitrile chlorides (4) and a cocatalyst (5), in which the cocatalyst (5) is used concomitantly with the phosphonitrile chlorides (4) and is selected from the group consisting of amides of the general formula
space="preserve" listing-type="equation">X-C(O)-R.sup.2,in which R2 is selected from the group consisting of a hydrogen atom, a monovalent hydrocarbon radical having from 1 to 8 carbon atoms per radical and a substituted monovalent hydrocarbon radical having from 1 to 8 carbon atom per radical, and X is selected from th consisting of a radical of the formula R22 N- and ##STR4## where R2 is the same as above and R3 is a divalent hydrocarbon radical having from 5 to 7 carbon atoms per radical, urea, urea derivatives of the general formula
space="preserve" listing-type="equation">X-C(O)-X,where X is the same as above and cyanuric acid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- 7. The process of claim 1, wherein the cocatalyst (5) is a urea derivative of the formula
- space="preserve" listing-type="equation">X-C(O)-X,
where X is selected from the group consisting of a radical of the formula R22 N- and ##STR6## R2 is selected from the group consisting of a hydrogen atom, a monovalent hydrocarbon radical having from 1 to 8 carbon atoms per radical and a substituted monovalent hydrocarbon radical having from 1 to 8 carbon atoms per radical and R3 is a divalent hydrocarbon radical having from 5 to 7 carbon atoms per radical.
Specification
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- Resources
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Current AssigneeWacker-Chemie GmbH (Dr. Alexander Wacker Familiengesellschaft Mit Beschrã¤Nkter Haftung)
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Original AssigneeWacker-Chemie GmbH (Dr. Alexander Wacker Familiengesellschaft Mit Beschrã¤Nkter Haftung)
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InventorsStaiger, Gerhard, Doskocil, Walter, Muller, Johann
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Primary Examiner(s)Shaver, Paul F.
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Application NumberUS07/530,380Time in Patent Office335 DaysField of Search556/451, 556/452, 556/415, 556/453, 556/454, 556/456, 556/449, 556/427, 556/440, 549/215US Class Current556/453CPC Class CodesC07F 7/0874 Reactions involving a bond ...
