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US Patent 11859053 SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers

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 US Patent 11859053 SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers

Article

Patent abstract

Process for producing SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers comprising repeating (AB) units, comprising pretreating acidified, end-equilibrated α,ω-diacetoxypolydimethylsiloxanes with a base and reacting the α,ω-diacetoxypolydimethylsiloxanes resulting therefrom with polyether diols in the presence of a solid, liquid or gaseous base, optionally using inert solvents.

Infobox
Is a
Patent
Patent
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
118590530
Patent Inventor Names
Dagmar Windbiel0
Horst Dudzik0
Wilfried Knott0
Date of Patent
January 2, 2024
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Patent Application Number
171455580
Date Filed
January 11, 2021
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Patent Citations
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US Patent 7196153 Equilibration of siloxanes
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US Patent 7598334 Process for preparing equilibration products of organosiloxanes, the organopolysiloxanes thus obtainable, and use thereof
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US Patent 7612158 Equilibration of siloxanes
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US Patent 7619035 Method of producing addition products of compounds containing SiH groups onto reactants having one double bond on aqueous media
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US Patent 7645848 Process for preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers
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US Patent 7825205 Process for the preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers and their use
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US Patent 7825206 Process for reacting polyorganosiloxanes and their use
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US Patent 7825209 Process for the preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers and their use
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US Patent 8138294 Process for preparing branched Si-H functional polysiloxanes and use thereof for preparing liquid SiC- or SiOC-linked, branched modified organomodified polysiloxanes
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US Patent 8283422 Polyethersiloxanes carrying alkoxysilyl groups and method for production thereof
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US Patent 8309664 Silicone-polyether copolymer systems and process for preparing them by means of an alkoxylation reaction
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US Patent 8334355 Silicone-polyether block copolymers having a defined polydispersity in the polyoxyalkylene part and their use as stabilizers for producing polyurethane foams
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US Patent 8420748 Process for preparing branched Si-H functional polysiloxanes and use thereof for preparing liquid SiC- or SiOC-linked, branched modified organomodified polysiloxanes
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US Patent 8598295 Method for producing branched SiH functional polysiloxanes and the use thereof for producing SiC- and SiOC-linked, branched organomodified polysiloxanes
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US Patent 8623984 Compositions containing polyether-polysiloxane copolymers
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US Patent 8779079 Silicone polyether copolymers and process for preparation thereof
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US Patent 9068044 Alkoxylation products and process for preparing them by means of DMC catalysts
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US Patent 10399998 Mixtures of cyclic branched siloxanes of the D/T type and conversion products thereof
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US Patent 10414871 Mixtures of cyclic branched siloxanes of the D/T type and conversion products thereof
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US Patent 10414872 Production of SiOC-bonded polyether siloxanes
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US Patent 10519280 Process for preparing SiC-Bonded polyethersiloxanes
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US Patent 10526454 Process for preparing SiC-bonded polyethersiloxanes
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US Patent 10752735 Mixtures of cyclic branched siloxanes of the D/T type and conversion products thereof
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US Patent 10766913 Mixtures of cyclic branched siloxanes of the D/T type and conversion products thereof
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US Patent 10954344 SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers
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US Patent 11021575 Process for producing acetoxy-bearing siloxanes
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US Patent 11066429 Process for producing acetoxy-bearing siloxanes
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US Patent 11261298 Tailored SiOC-based polyethersiloxanes
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US Patent 11286351 Process for producing acetoxy-bearing siloxanes
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US Patent 11472822 Process for purifying acetoxysiloxanes
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Patent Primary Examiner
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Margaret G. Moore
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CPC Code
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C08G 77/46
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C08G 77/06
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C08G 77/08
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