Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1992-01-30
1995-01-10
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
560144, 560254, 560261, C07F 708
Patent
active
053809017
ABSTRACT:
The present invention provides a process for converting a hydrophobic siloxane diacrylate, an aromatic fluorinated diacrylate and a hydrophilic polyethylene glycol diacrylate to their respective multifunctional oligomers. Bis(4-acryloxybutyl)tetramethyldisiloxane, prepared from the corresponding diol, is converted to relatively low viscosity, multifunctional oligomers with the use of DMSO. The hydrophilic monomer, polyethylene glycol 400 diacrylate, formed more viscous, water soluble oligomeric products without the need for a solvent. Characterization of these oligomers by infrared spectroscopy and .sup.1 H NMR supports the assigned structures. Because of the predominant 1,6-arrangement of double bonds in these oligomers, they have a propensity to undergo cyclopolymerization as well as the usual crosslinking associated with the free radical polymerization of multifunctional monomers and oligomers. These novel oligomeric monomers have potential use in dental composites, sealants, adhesives, dentures, contact lenses, biomedical prostheses, cements, drug delivery systems, coatings and caulks.
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Antonucci Joseph M.
Cheng Guo-Wei
Stansbury Jeffrey W.
Shaver Paul F.
The United States of America as represented by the Secretary of
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