EP0307098A2
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EP
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Polyalkoxysilylalkylenedisilazanes and silylamines
Assignee: Dow Silicones Corp
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Filing: 1988-08-17
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Granted: —
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Expires: 2008-08-17
Abstract
Abstract A polyalkoxysilylalkylenedisilazane of the formula and a polyalkoxysilylalkylenesilylamine of the formula where x is 0 or 1; R is a saturated alkyl or aryl radical or mixture of radicals; R′ is alkyl, aryl, or cellosolve radical, or mixture of radicals; R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals; and A is a divalent hydrocarbon radical having 2 to 20 carbon atoms; and a method for their manufacture by the platinum catalyzed addition of an alkenyl-functional disilazane or silylamine with an alkoxy-functional silicon hydride is disclosed. The silylamine can also be produced by the platinum catalyzed addition of a SiH functional silazane or silylamine and an alkenyltrialkoxysilane. The polyalkoxysilylalkylenedisilazane and the polyalkoxysilylalkylenesilylamine can be reacted with a silanol containing polyorganosiloxane such as a hydroxyl endblocked polydiorganosiloxane in the presence of an acidic catalyst to give a polyalkoxysilyl terminated polydiorganosiloxane in which the terminal groups are bonded to the polymer through an alkylene linkage.
Inventors
- 👤 Robert Harold Krahnke
- 👤 John Carlton Saam
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 09:24
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/14; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08G; C08G77/00; C08G77/48; C08G77/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
59 words
A polyalkoxysilylalkylenedisilazane of the formula where x is 0 or 1; R is a saturated alkyl or aryl radical, or mixture of radicals; R′ is alkyl, aryl, or cellosolve radical, or mixture of radicals; R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals; and A is a divalent hydrocarbon radical having 2 to 20 carbon atoms.
Claim 2
Dependent Claim
59 words
A polyalkoxysilylalkylenedisilazane of the formula where x is 0 or 1; R is a saturated alkyl or aryl radical, or mixture of radicals; R′ is alkyl, aryl, or cellosolve radical, or mixture of radicals; R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals; and A is a divalent hydrocarbon radical having 2 to 20 carbon atoms.
Claim 3
Dependent Claim
59 words
A polyalkoxysilylalkylenesilylamine of the formula where x is 0 or 1; R is a saturated alkyl or aryl radical or mixture of radicals; R′ is alkyl, aryl, or cellosolve radical, or mixture of radicals; R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals; and A is a divalent hydrocarbon radical having 2 to 20 carbon atoms.
Claim 4
Dependent Claim
59 words
A polyalkoxysilylalkylenesilylamine of the formula where x is 0 or 1; R is a saturated alkyl or aryl radical or mixture of radicals; R′ is alkyl, aryl, or cellosolve radical, or mixture of radicals; R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals; and A is a divalent hydrocarbon radical having 2 to 20 carbon atoms.
Claim 5
Dependent Claim
101 words
A method for producing the polyalkoxysilylalkylenedisilazane of claim 1 comprising (A) mixing (1) 2 moles of polyalkoxysilane of the formula (2) 1 mole of dialkylalkenyldisilazane of the formula (3) platinum catalyst where x is 0 or 1; R is a saturated alkyl, aryl radical, or mixture of radicals; R′ is alkyl, aryl, cellosolve radical, or mixture of radicals; R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals; and B is a monovalent hydrocarbenyl radical having 2 to 20 carbon atoms, and, (B) reacting at a temperature of from 20°C. to 130°C. to give the polyalkoxysilylalkylenedisilazane of claim 1.
Claim 6
Dependent Claim
101 words
A method for producing the polyalkoxysilylalkylenesilylamine of claim 2 comprising (A) mixing (1) 1 mole of polyalkoxysilane of the formula (2) 1 mole of dialkylalkenylsilazane of the formula (3) platinum catalyst where x is 0 or 1, R is a saturated alkyl, aryl radical, or mixture of radicals, R′ is alkyl, aryl, cellosolve radical, or mixture of radicals, R˝ is hydrogen, alkyl, aryl, or arylalkyl radical or mixture of radicals, and B is a monovalent hydrocarbenyl radical having 2 to 20 carbon atoms, and, (B) reacting at a temperature of from 20°C. to 130°C. to give the polyalkoxysilylalkylenesilylamine of claim 2.
Claim 7
Dependent Claim
76 words
A method for preparing a polyalkoxysilyl containing polyorganosiloxane in which the polyalkoxysilyl groups are bonded to the polymer through an alkylene linkage comprising (A) mixing in the absence of moisture, (1) silanol containing polyorganosiloxane, (2) the polyalkoxysilylalkylenedisilazane of claim 1, and (3) acidic catalyst, where the molar amount of (2) is in excess of the molar amount of (1), and (B) allowing the mixture to react until the silanol groups have been replaced with polyalkoxysilylalkylsilyl groups.
Claim 8
Dependent Claim
76 words
A method for preparing a polyalkoxysilyl containing polyorganosiloxane in which the polyalkoxysilyl groups have bonded to the polymer through an alkylene linkage comprising (A) mixing in the absence of moisture, (1) silanol containing polyorganosiloxane, (2) the polyalkoxysilylalkylenesilylamine of claim 2, and (3) acidic catalyst, where the molar amount of (2) is in excess of the molar amount of (1), and (B) allowing the mixture to react until the silanol groups have been replaced with polyalkoxysilylalkylsilyl groups.
Claim 9
Dependent Claim
30 words
A curable silicone elastomeric composition of the type containing an alkoxy functional polydiorganosiloxane, the improvement comprising the use of the polyalkoxy terminated polydiorganosiloxane produced by the method of claim 5.
Claim 10
Dependent Claim
30 words
A curable silicone elastomeric composition of the type containing an alkoxy functional polydiorganosiloxane, the improvement comprising the use of the polyalkoxy terminated polydiorganosiloxane produced by the method of claim 6.
Claim 11
Dependent Claim
16 words
The curable silicone elastomeric composition of claim 7 in which the composition contains a titanium catalyst.
Claim 12
Dependent Claim
16 words
The curable silicone elastomeric composition of claim 8 in which the composition contains a titanium catalyst.
References Cited (Backward Citations)
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