Minnesota Mining and Manufacturing Company

Robert J Koshar

George V Tiers

Loren L Barber, Jr

Louis M Leichter

Stephen W Bany

Gary Timothy Boyd

Cecil V Francis

Eugene P Janulis

Todd R Williams

Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. when aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO response. There is also disclosed: a method of preparing a NLO composition; novel PDFMs and novel polymers; and a new process for preparing PDFMs.

Nonlinear optical materials containing polar disulfone-functionalized

A process for preparing polar disulfone-functionalized molecules, which process comprises performing one or more of the following reactions:

Method of preparing polar disulfone-functionalized molecules

Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. When aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO response. There is also disclosed: a method of preparing a NLO composition; novel PDFMs and novel polymers; and a new process for preparing PDFMs.

A low surface energy material is a hydrosilation reaction product of an ethylenically-unsaturated perfluoropolyether with a compound containing silicon-bonded hydrogen. A substrate bearing the low surface energy coating of the invention can be used in low-adhesion articles, for example, in adhesive tapes, for cooking utensils, ice-release for aircraft, or for magnetic recording media.

Low surface energy material

Shaped articles, particularly ophthalmic devices, can be fabricated from oxygen transmissive, hydrolytically stable, polysiloxane copolymers of readily prepared poly(organosiloxane) monomers having monourethane acrylate groups and copolymerizable ethylenically-unsaturated monomers. The ophthalmic devices comprise copolymers of compositions containing 15 to 100 percent of said organopolysiloxane urethane acrylate and 85 to 0 percent of copolymerizable ethylenically-unsaturated monomers. Ophthalmic devices which are fabricated from monourethane acrylates of polysiloxane alcohols have high oxygen permeability. A novel process is disclosed for the preparation of these polysiloxanes which have at least one urethane acrylate substituent.

Ophthalmic devices fabricated from urethane acrylates of polysiloxane

Acidic cyclic perfluoroaliphaticdisulfonimides, salts thereof, a process for making the same, curable compositions containing acidic cyclic perfluoroaliphaticdisulfonimides or salts thereof and cationically-sensitive monomers, and a process for using acidic cyclic perfluoroaliphaticdisulfonimides and salts thereof as catalysts for the cure of cationically-sensitive monomers.

Cyclic perfluoroaliphaticdisulfonimides as polymerization catalysts

Cyclic perfluoroaliphaticdisulfonimides

Cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides, amide derivatives thereof, a process for making the same, curable compositions containing cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides or amide derivatives thereof and cationically-sensitive monomers, and a process for using cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides or amide derivatives thereof as catalysts for the cure of cationically-sensitive monomers.

Cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides

This invention relates to cured epoxypolysiloxanes and their blends with epoxy-terminated silanes which are useful as release coatings for adhesive roll and sheet materials.

Epoxypolysiloxane release coatings for adhesive materials

Bis(fluoroaliphaticsulfonyl)imides are used as catalysts for the ring-opening polymerization of organocyclosiloxanes to produce lubricants, coatings or rubber precursors.

Use of bis(fluoroaliphaticsulfonyl)imides in polymerization of

Fluoroaliphaticsulfonyl substituted ethylenes, useful as catalysts in polymerization of monomers, e.g., epoxide, vinyl ether, and N-vinyl monomers, are prepared by condensation of precursor fluoroaliphaticsulfonyl methanes with aldehydes or N-formyl compounds.

Fluoroaliphaticsulfonyl substituted ethylenes catalysts in

Fluoroaliphaticsulfonyl substituted methanes have the general formula ##STR1## WHEREIN R.sub.f is a fluoroaliphatic radical R.sub.3 is a radical selected from a group consisting of alkyl, perfluoroaliphatic or aryl. The fluoroaliphaticsulfonyl methanes may be condensed with aldehydes or N-formyl compounds to produce fluoroaliphaticsulfonyl substituted ethylenes which are useful as catalysts.

Fluoroaliphaticsulfonyl substituted methanes

Fluoroaliphaticsulfonyl substituted ethylenes substituted by furyl,

1,1-Bis(perfluoroalkylsulfonyl)propanes substituted in the three position by two to three electron-withdrawing groups, particularly perfluoroalkylsulfonyl, carboxyl, carboalkoxy or cyano are catalysts for the polymerization of aromatic epoxy resins.

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Mahtomedi, MN, United States of America

Robert J Koshar