EP0963397A1 - Procede de production de siloxanes organofonctionnels et leur utilisation - Google Patents

Procede de production de siloxanes organofonctionnels et leur utilisation

Info

Publication number
EP0963397A1
EP0963397A1 EP98909423A EP98909423A EP0963397A1 EP 0963397 A1 EP0963397 A1 EP 0963397A1 EP 98909423 A EP98909423 A EP 98909423A EP 98909423 A EP98909423 A EP 98909423A EP 0963397 A1 EP0963397 A1 EP 0963397A1
Authority
EP
European Patent Office
Prior art keywords
alkyl
dialkylsiloxane
catalyst
sio
compound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98909423A
Other languages
German (de)
English (en)
Inventor
Hubertus Eversheim
Ottfried Schlak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Momentive Performance Materials GmbH
Original Assignee
GE Bayer Silicones GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GE Bayer Silicones GmbH and Co KG filed Critical GE Bayer Silicones GmbH and Co KG
Publication of EP0963397A1 publication Critical patent/EP0963397A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
    • C08G77/14Polysiloxanes containing silicon bound to oxygen-containing groups
    • C08G77/18Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
    • C08G77/06Preparatory processes
    • C08G77/10Equilibration processes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
    • C08G77/22Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/26Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/48Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/50Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages

Definitions

  • the present invention relates to a process for the preparation of Si-O-C-linked organofunctional siloxanes and their use
  • Organofunctionally modified siloxanes have a wide range of applications for modifying organic polymers.
  • the production of the siloxanes has hitherto been carried out using two-stage production processes in which the siloxane framework is first built up and then, in a second step, the desired organofunctional group is introduced
  • DE-A 3 334 782 discloses the reaction of an acetoxy-terminated polysiloxane with dihydroxy compounds with elimination of acetic acid, while in US Pat. No. 578,562 the reaction of an SiOH-stopped polysiloxane with diols
  • the object of the present invention was to provide a simplified method for producing organofunctional siloxanes
  • the invention therefore relates to a process for the preparation of organofunctional polydiorganosiloxanes of the formula (I) [R 2 (XR , O) S ⁇ O I / 2 ] 1 [R 2 S ⁇ O 2/2 ] "[RS I O 1/2 ] 2 l
  • the t ⁇ methylsiloxy groups are preferably added as hexamethyldisiloxane.
  • This mixture is preferably a mixture obtained in the hydrolysis of chlorosilanes.
  • water is formed by condensation the SiOH group
  • a hydrophobic solvent is preferably used for easier removal of the water of reaction
  • An aquiliberation catalyst is understood to mean a catalyst which is responsible for both the chain structure and the chain degradation in the reaction
  • perfluoroalkylsulfonic acids preferably ci- to C ⁇ -perfluoroalkylsulfonic acids, individually or in a mixture with sulfuric acid, or alkali metal hydroxides, preferably potassium and casium hydroxide, are preferably used as aquilation catalysts, preferably the aquatic fermentation catalyst is used in amounts of 500-5000 ppm. based on the amounts of cyclic dialkylsiloxane and the compound HO-R'-X used
  • ether particularly affects diols which can form cyclic 5 or 6-membered ethers, such as the formation of dimethyltetrahydrofuran from 2.5 hexanediol.
  • the cleavage of diols is observed particularly in the case of bishydroxyphenylalkanes, such as, for example, in the reaction of 2,2-bis (4-hydroxyphenyl) propane to give phenol and isopropenylphenol. These reactions can be partially avoided by a suitable choice of catalyst.
  • Basic catalysts such as cesium hydroxide are preferred as catalysts.
  • the cyclic dialkylsiloxane is preferably used in a ratio of 1 to 500 mol of dialkylsiloxy groups to 2 mol of the compound of the HO-R'-X type.
  • the hydrophobic solvent used in the process according to the invention preferably has a boiling point> 100 ° C. at atmospheric pressure and / or forms an azeotrope with water.
  • a boiling point> 100 ° C. at atmospheric pressure and / or forms an azeotrope with water preferably has a boiling point> 100 ° C. at atmospheric pressure and / or forms an azeotrope with water.
  • the process involves a certain solubility of the HOR'X type compound used in the solvent used and / or in the siloxane.
  • Xylene, toluene or chlorobenzene are preferably used.
  • the HOR'X compound used has a boiling point above the solvent used and does not form an azeotrope with water.
  • the following are preferred combinations: toluene hydroquinone, xylene hydroquinone, xylene / 2,2-bis (hydroxymethyl-1-butenol) diallyl ether and xylene / 2,2-bis (4-hydroxycyclohexyl) propane.
  • Siloxane chain as alcohols, e.g. 2,2-bis (4-hydroxycyclohexyl) propane, in which there is no interaction between the OH groups.
  • the more reactive primary OH group preferably reacts with the siloxane.
  • the process according to the invention can be ended by neutralizing the catalyst.
  • neutralization preference is given to those neutralizing agents which are to be removed completely from the product after the reaction mixture has been worked up.
  • NaHCO 3 NaHCO 3 , soda and (NH4) 2 CO 3 are used in basic catalysis
  • the invention also relates to the use of the organofunctional siloxanes produced by the process according to the invention for modifying organic polymers.
  • the incorporation into the polymer structure is to take place by reaction of the O-Si (R 2 ) -O-R'X groups formed with the organic monomers or oligomers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Silicon Polymers (AREA)

Abstract

L'invention concerne un procédé de production de siloxanes organofonctionnels liés à Si-O-C et leur utilisation.
EP98909423A 1997-02-20 1998-02-09 Procede de production de siloxanes organofonctionnels et leur utilisation Withdrawn EP0963397A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19706646 1997-02-20
DE19706646 1997-02-20
PCT/EP1998/000700 WO1998037126A1 (fr) 1997-02-20 1998-02-09 Procede de production de siloxanes organofonctionnels et leur utilisation

Publications (1)

Publication Number Publication Date
EP0963397A1 true EP0963397A1 (fr) 1999-12-15

Family

ID=7820891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98909423A Withdrawn EP0963397A1 (fr) 1997-02-20 1998-02-09 Procede de production de siloxanes organofonctionnels et leur utilisation

Country Status (5)

Country Link
US (1) US6258968B1 (fr)
EP (1) EP0963397A1 (fr)
JP (1) JP2001512511A (fr)
AU (1) AU6396498A (fr)
WO (1) WO1998037126A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6482912B2 (en) * 2001-01-29 2002-11-19 Ndsu Research Foundation Method of preparing aminofunctional alkoxy polysiloxanes
US7449537B2 (en) * 2001-01-29 2008-11-11 Ndsu Research Foundation Antineoplastic polyalkoxyalkylsiloxanes and methods of use thereof
CN102775757B (zh) * 2007-01-10 2015-05-27 沙特基础全球技术有限公司 低烟气密度聚(亚芳基醚)组合物,方法,和制品
WO2012158767A1 (fr) 2011-05-17 2012-11-22 Momentive Performance Materials Gmbh Copolymères polysiloxane-polyorgano séquencés
RU2014145007A (ru) * 2012-04-10 2016-05-27 Моментив Перформанс Матириалз Гмбх Способ получения функциональных силоксанов с регулируемой структурой
JP6602300B2 (ja) 2013-08-23 2019-11-06 モーメンティブ・パフォーマンス・マテリアルズ・インク シロキサン合成用触媒
KR102257689B1 (ko) * 2013-10-08 2021-05-31 코베스트로 도이칠란트 아게 폴리실록산-폴리카보네이트 블록 공축합물
US9828463B2 (en) * 2013-10-08 2017-11-28 Covestro Deutschland Ag Process for preparing polysiloxane-polycarbonate block cocondensates using a salt of a weak acid
US9845378B2 (en) * 2013-10-08 2017-12-19 Covestro Deutschland Ag Process for preparing polysiloxane-polycarbonate block cocondensates
US9828462B2 (en) * 2013-10-08 2017-11-28 Covestro Deutschland Ag Preparation of siloxane-containing block copolycarbonates by means of reactive extrusion
JP2017520663A (ja) 2014-07-03 2017-07-27 モメンティブ パフォーマンス マテリアルズ インコーポレイテッド エステル官能性ポリシロキサンおよびそれから作られるコポリマー
TWI894358B (zh) * 2020-09-23 2025-08-21 日商三菱瓦斯化學股份有限公司 組成物及使用其之矽氧烷系熱塑性樹脂,及該等之製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1542963A (en) * 1976-04-08 1979-03-28 Goldschmidt Ag Th Process for the manufacture of equilibrated mixtures of organopolysiloxanes having organo-sulphonate groups bonded to the silicon
AU6904781A (en) 1980-04-04 1981-10-08 General Electric Company Silicone brake fluid
DE3334782A1 (de) 1983-04-19 1984-10-25 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von polydiorganosiloxanen mit hydroxyaryloxy-endgruppen
US4897459A (en) 1987-11-25 1990-01-30 General Electric Company Catalyst for producing fluorosilicone polymers
US4895968A (en) 1988-10-24 1990-01-23 General Electric Company Acid equilibration method for organcpolysiloxanes having carbon-silicon-bonded aromatic organic radicals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9837126A1 *

Also Published As

Publication number Publication date
JP2001512511A (ja) 2001-08-21
WO1998037126A1 (fr) 1998-08-27
US6258968B1 (en) 2001-07-10
AU6396498A (en) 1998-09-09

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