US4996257A
Expired / Lapsed
US
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Surface-treated polyorganosilsesquioxane fine powder
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1989-04-18
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Granted: 1991-02-26
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Expires: 2009-04-18
Abstract
Abstract A polyorganosilsesquioxane fine powder which is surface-treated with an organosilicon comound containing a quaternary ammonium group, represented by the formula (I) or (II): <IMAGE> (I) <IMAGE> (II) wherein R1 represents an alkyl group, a substituted or unsubstituted aralkyl group, or a group represented by (CnH2nO)mZ wherein Z represents a hydrogen atom or an alkyl group, symbol n is an integer of 2 to 4, and symbol m is an integer of 1 to 20; R2 and R3 each independently represents a hydrogen atom, an alkyl group or a hydroxyalkyl group; Q1 and Q2 each independently represents an alkylene group; R4 represents an alkyl group or a phenyl group; R5 represents an alkyl group having 1 to 4 carbon atoms; X- represents an anion; and symbol a is an integer of 0 to 3.
Inventors
- 👤 Kenji Saito
- 👤 Hiroshi Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:41
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/08; C08J; C08J3/00; C08J3/005; C08G; C08G77/00; C08G77/04; C08G77/06; C08J3/12; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1637; C08J2383/00; C08J2383/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
A polyorganosilsesquioxane fine powder which is contacted with an organosilicon compound containing a quaternary ammonium group, so that the surface of the polyorganosilsesquioxane is covered with the organosilicon compound, wherein the organosilicon compound is represented by the formula (I) or (II): ##STR4## wherein R 1 represents an alkyl group, a substituted or unsubstituted aralkyl group, or a group represented by (C n H 2n O) m Z wherein Z represents a hydrogen atom or an alkyl group, symbol n is an integer of 2 to 4, and symbol m is an integer of 1 to 20; R 2 and R 3 each independently represents a hydrogen atom, an alkyl group or a hydroxyalkyl group; Q 1 and Q 2 each independently represents an alkylene group; R 4 represents an alkyl group or a phenyl group; R 5 represents an alkyl group having 1 to 4 carbon atoms; X represents an anion; and symbol a is an integer of 0 to 3.
Claim 2
Dependent Claim
161 words
A polyorganosilsesquioxane fine powder which is contacted with an organosilicon compound containing a quaternary ammonium group, so that the surface of the polyorganosilsesquioxane is covered with the organosilicon compound, wherein the organosilicon compound is represented by the formula (I) or (II): ##STR4## wherein R 1 represents an alkyl group, a substituted or unsubstituted aralkyl group, or a group represented by (C n H 2n O) m Z wherein Z represents a hydrogen atom or an alkyl group, symbol n is an integer of 2 to 4, and symbol m is an integer of 1 to 20; R 2 and R 3 each independently represents a hydrogen atom, an alkyl group or a hydroxyalkyl group; Q 1 and Q 2 each independently represents an alkylene group; R 4 represents an alkyl group or a phenyl group; R 5 represents an alkyl group having 1 to 4 carbon atoms; X represents an anion; and symbol a is an integer of 0 to 3.
Claim 3
Dependent Claim
45 words
A polyorganosilsesquioxane fine powder as claimed in claim 1, wherein the polyorganosilsesquioxane is represented by the formula [R.sup.6 SiO.sub.3/2 ].sub.p wherein R 6 represents a substituted or unsubstituted monovalent hydrocarbon group, and p is a number which is sufficient for the polymer to be solid.
Claim 4
Dependent Claim
23 words
A polyorganosilsesquioxane fine powder as claimed in claim 1, wherein the fine powder has an average particle diameter of 100 μm or less.
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