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Iridium-containing hydrosilylation catalyst and composition containing same

A technology for hydrosilylation reaction and composition, applied in catalyst activation/preparation, iron organic compounds, indium organic compounds, etc., can solve the problems of difficult preparation, difficult to obtain metals, expensive and the like

Active Publication Date: 2017-02-22
DOW SILICONES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of these hydrosilylation catalysts is that they are extremely expensive
Certain metals in these hydrosilylation catalysts may also be difficult to obtain, and some of these hydrosilylation catalysts may be difficult to prepare

Method used

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  • Iridium-containing hydrosilylation catalyst and composition containing same
  • Iridium-containing hydrosilylation catalyst and composition containing same
  • Iridium-containing hydrosilylation catalyst and composition containing same

Examples

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preparation example Construction

[0189] The preparation method of the resin is well known in the art. For example, the resin can be prepared by treating the resin copolymer produced by the silica hydrosol capping method described by Daudt et al. with at least one alkenyl group-containing capping agent. The method described by Daudt et al. is disclosed in US Patent 2,676,182.

[0190] The method of Daudt et al. involves reacting silica hydrosols with hydrolyzable triorganosilanes (such as trimethylchlorosilane), siloxanes (such as hexamethyldisiloxane), or mixtures thereof under acidic conditions , And the recovery of copolymers with M units and Q units. The resulting copolymer usually contains 2 to 5% by weight of hydroxyl groups.

[0191] The resin (usually containing less than 2% of silicon-bonded hydroxyl groups) can be prepared by the following method: the product described by Daudt et al. with an unsaturated organic group-containing end-capping agent and a non-aliphatic unsaturated group-free The capping a...

example

[0300] These examples are intended to illustrate some embodiments of the invention and should not be construed as limiting the scope of the invention described in the claims. The following ingredients are used in the examples.

[0301] The aliphatic unsaturated compound can be styrene (B1), 1-octene (B2) or 1-hexene (B3), all of which are also available from Sigma-Aldrich. Alternatively, the aliphatic unsaturated compound may be (B4) vinyl-terminated polydimethylsiloxane containing 2.6 meq of silicon-bonded vinyl and having a Mw of 9400 and a viscosity of 200 cSt, which is commercially available as DMS-V22 From the Gellert Company of Morrisville, Pennsylvania, USA. The SiH functional compound can be (C1) trimethylsiloxy terminated poly(methylhydrogen)siloxane ("MD H M"), which has an Mw in the range of 1,800 to 2,100 and a SiH content of 2.6 meq, is also commercially available from Gelest Company as HMS-992. Alternatively, the SiH functional compound can be (C2)phenylsilane (" ...

example 1

[0305] Example 1-Formation of metal-ligand complex

[0306] The precursor solution was prepared by the following method: 0.025 mol / L ( M ) The concentration of Ir precursor is mixed with THF, or if the precursor is not soluble in THF, the precursor is mixed with a suitable solvent selected from the group consisting of dimethyl sulfoxide (DMSO), toluene and hexane for dissolving the ligand . The Ir precursors used were iridium(III) chloride (Ir-1 precursor) and 1,5-cyclooctadiene iridium(I) chloride dimer (Ir-2 precursor). Also passed 0.025 M The concentration of the ligand was mixed with THF to prepare the solution of each ligand shown in Table 2 above. Each ligand solution prepared above was divided into 2 milliliters (mL) vials at 85 microliters (μL) per vial. In order to prepare a sample to be evaluated as component (A), one of the above-mentioned metal precursor solutions was added to the vial containing the ligand, and another 85 microliters (μL) of THF was added and kept...

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Abstract

The present invention discloses a composition which contains (A) a hydrosilylation reaction catalyst and (B) an aliphatic unsaturated compound, and the aliphatic unsaturated compound has one or more compounds capable of carrying out Aliphatically unsaturated organic groups for hydrosilylation reactions. The composition is capable of reacting by hydrosilylation reactions to form reaction products such as silanes, gums, gels, rubbers or resins. Ingredient (A) contains a metal-ligand complex which can be prepared by a method comprising reacting a metal precursor with a ligand.

Description

Technical field [0001] This application relates to an iridium-containing hydrosilylation catalyst and a composition containing the catalyst. Background technique [0002] Catalysts for catalyzing the hydrosilylation reaction are known in the art and commercially available. These conventional hydrosilylation catalysts may be metals selected from platinum, rhodium, ruthenium, palladium, osmium, and iridium. Alternatively, the hydrosilylation catalyst may be a compound of this metal, such as chloroplatinic acid, chloroplatinic acid hexahydrate, platinum dichloride, and a complex or microencapsulation of the compound and low molecular weight organopolysiloxane Platinum compounds in matrix or core / shell structure. The complex of platinum and low molecular weight organopolysiloxane includes 1,3-divinyl-1,1,3,3-tetramethyldisiloxane and platinum. These complexes can be microencapsulated in a resin matrix. Exemplary hydrosilylation catalysts are described in US Patent Nos. 3,159,601,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00
CPCC07D413/10C07F11/005C08G77/12C08L83/04C08K5/01C08K5/56C07F7/0838C07D213/32C07D213/38C07D213/53C07D215/12C07D271/06C07D295/135C07D307/52C07D333/22C07D413/14C07F7/0896C08G77/08C07F7/0805C07F7/1804B01J31/0272B01J31/22B01J31/2295B01J31/24B01J31/2414B01J31/2433B01J37/00B01J2231/323B01J2531/16B01J2531/17B01J2531/46B01J2531/49B01J2531/56B01J2531/64B01J2531/74B01J2531/821B01J2531/827B01J2531/842B01J2531/845B01J2531/847C07C209/66C07C213/08C07C217/92C07F1/00C07F1/005C07F1/08C07F3/06C07F7/00C07F7/0872C07F7/0879C07F7/0889C07F7/1876C07F9/5045C07F9/60C07F13/00C07F13/005C07F15/0033C07F15/0046C07F15/02C07F15/065C09K3/00G07F13/00
Inventor 库尔特·布兰德施塔特西蒙·库克B·T·源A·瑟格诺R·泰勒明-新·邹阿斯维尼·达什马修·奥尔森
Owner DOW SILICONES CORP
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