Multi-use Aminofunctional Alkoxy Polysiloxanes
With 100% selectivity of the hydroxyl moiety, potential market applications include coatings, adhesives, sealants, rubbers, elastomers, catalyst supports, sol-gel/ceramic precursors, components in molecular sieves, chromatography columns, polyelectrolytes and electrochemical sensing devices. Minimal purification required with only hydrogen gas produced as side product. Cost-effective production, relative to the comparable hydrosilation process. Extended shelf life for amino-silicones.
Linear and cyclic polysiloxanes with pendant amine moieties have been synthesized with hydroxyalkyl-amines. The reaction exhibits 100% selectivity of the hydroxyl moiety over the amine moiety of aminoalcohols at the reactive Si-H site, leaving the pendant amine functionality intact on the product. No side reactions, including that of rearranging the polysiloxane backbone occurs. The reaction is a one-pot process with minimal purification required since the only side product is hydrogen gas. Compared to the hydrosilation process, the process is cost effective on a per/mole catalyst basis. The amino-silicone end products have an extended shelf life (months) under normal precautions.
Patent Number: US6482912B2
Application Number: US2001771921A
Inventor: Boudjouk, Philip | Ready, Thomas E. | Chauhan, Bhanu P. S.
Priority Date: 29 Jan 2001
Priority Number: US6482912B2
Application Date: 29 Jan 2001
Publication Date: 19 Nov 2002
IPC Current: C07F000708 | C07F000721 | C08G0077388
US Class: 528015 | 528028 | 528029 | 528031 | 556407 | 556425
Assignee Applicant: NDSU Research Foundation,Fargo
Title: Method of preparing aminofunctional alkoxy polysiloxanes
Usefulness: Method of preparing aminofunctional alkoxy polysiloxanes
Summary: Used as a coating composition (claimed) and in production of adhesives, catalyst supports, ionically conductive materials, liquid crystals, crosslinking agents, conductive and electroluminescent polymers, electrochemical sensing devices and non-linear optical chromophores.
Novelty: Production of aminofunctional alkoxy polysiloxane used for e.g. adhesives and liquid crystals, comprises reacting polyhydrosiloxane with alcohol including aminoalcohol in presence of dehydrogenative coupling catalyst
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化工/材料應用
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