DE19781996T1 - Verfahren zur Rückgewinnung von Methyl-Polysiloxan - Google Patents

Verfahren zur Rückgewinnung von Methyl-Polysiloxan

Info

Publication number
DE19781996T1
DE19781996T1 DE1997181996 DE19781996T DE19781996T1 DE 19781996 T1 DE19781996 T1 DE 19781996T1 DE 1997181996 DE1997181996 DE 1997181996 DE 19781996 T DE19781996 T DE 19781996T DE 19781996 T1 DE19781996 T1 DE 19781996T1
Authority
DE
Germany
Prior art keywords
recovery
methyl polysiloxane
polysiloxane
methyl
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.)
Pending
Application number
DE1997181996
Other languages
English (en)
Other versions
DE19781996C2 (de
Inventor
Amit Kumar Paul
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE19781996T1 publication Critical patent/DE19781996T1/de
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/0834—Compounds having one or more O-Si linkage
    • C07F7/0838—Compounds with one or more Si-O-Si sequences
    • C07F7/0872—Preparation and treatment thereof
    • C07F7/089—Treatments not covered by a preceding group
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
    • C07F7/02—Silicon compounds
    • C07F7/21—Cyclic compounds having at least one ring containing silicon, but no carbon in the ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling
DE1997181996 1996-09-13 1997-09-12 Verfahren zur Rückgewinnung von Methyl-Polysiloxan Pending DE19781996T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU65599/96A AU6559996A (en) 1996-09-13 1996-09-13 Process for the recovery of methyl polysiloxanes in the form of methyl cyclosiloxanes
PCT/AU1997/000601 WO1998011155A1 (en) 1996-09-13 1997-09-12 Process for the recovery of methyl polysiloxanes in the form of cyclosiloxanes

Publications (1)

Publication Number Publication Date
DE19781996T1 true DE19781996T1 (de) 1999-11-18

Family

ID=3750269

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1997181996 Expired - Fee Related DE19781996C2 (de) 1996-09-13 1997-09-12 Verfahren zur Rückgewinnung von Organopolysiloxan
DE1997181996 Pending DE19781996T1 (de) 1996-09-13 1997-09-12 Verfahren zur Rückgewinnung von Methyl-Polysiloxan

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1997181996 Expired - Fee Related DE19781996C2 (de) 1996-09-13 1997-09-12 Verfahren zur Rückgewinnung von Organopolysiloxan

Country Status (4)

Country Link
US (1) US6187827B1 (de)
AU (1) AU6559996A (de)
DE (2) DE19781996C2 (de)
WO (1) WO1998011155A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105622B2 (en) * 2004-06-02 2006-09-12 The University Of Akron Hybrid polyurethanes
WO2014130948A1 (en) * 2013-02-25 2014-08-28 Dow Corning Corporation Method of recycling silicone waste with the use of organic polymer and depolymerization catalyst
CN114729128B (zh) 2020-03-10 2024-03-22 瓦克化学股份公司 对来自传热应用的(m/d/t)-甲基聚硅氧烷混合物进行处理的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111973A (en) * 1977-12-01 1978-09-05 General Electric Company Process for producing a cyclotrisiloxane in a cracking reaction
US4764631A (en) * 1988-01-15 1988-08-16 Dow Corning Corporation Preparation of cyclopolydiorganosiloxanes via vapor phase rearrangement
US4895967A (en) * 1988-09-26 1990-01-23 General Electric Company Method for making cyclic poly(siloxane)s
US5110972A (en) * 1991-07-18 1992-05-05 Tremco Incorporated Process for recycling silicone scrap and products relating thereto
US5312946A (en) * 1992-04-13 1994-05-17 General Electric Company Siloxane fluid from methylchlorosilane residue waste
DE4235877A1 (de) * 1992-10-23 1994-04-28 Wacker Chemie Gmbh Verfahren zur Herstellung von Methylpolysiloxanen
US5420325A (en) * 1994-07-29 1995-05-30 General Electric Company Siloxane cracking process
US5491249A (en) * 1995-04-20 1996-02-13 Hercules Incorporated Process for preparing cyclic polysiloxanes from linear polysiloxanes

Also Published As

Publication number Publication date
WO1998011155A1 (en) 1998-03-19
AU6559996A (en) 1998-03-19
US6187827B1 (en) 2001-02-13
DE19781996C2 (de) 2003-05-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8607 Notification of search results after publication