Minnesota Mining and Manufacturing Company

George H Smith

Peter M Olofson

A thermally developable imaging system comprises a leuco dye, nitrate ion, and a spectrally sensitized organic compound having photolyzable halogen atoms.

Visible light sensitive, thermally developable imaging systems

Photopolymerizable compositions which comprise cationically polymerizable organic material and photosensitive aromatic iodonium salt of a halogen-containing complex ion are described as are coated substrates and methods for bonding materials together using such compositions.

Photopolymerizable compositions

A thermally developable imaging system comprises a leuco dye, nitrate ion, and a spectrally sensitized compound selected from (1) aromatic iodonium salts and (2) compounds of photolyzable halogen atoms.

Photopolymerizable epoxy compositions which comprise an epoxy-containing material and photosensitive aromatic iondonium salt of a halogen-containing complex ion are described as are coated substrates and methods for bonding materials together using such compositions.

Photopolymerizable epoxy-containing compositions

Photocopolymerizable compositions are described which contain epoxides, organic material with hydroxyl functionality, and a photosensitive aromatic sulfonium or iodonium salt of a halogen-containing complex ion. Coated substrates are also described.

Process of using photocopolymerizable compositions based on epoxy and

Photocopolymerizable compositions based on epoxy and hydroxyl-containing

Iodonium and sulfonium photoinitiators are naturally sensitive to only a small portion of the electromagnetic spectrum. Various classes of sensitizing dyes for iodonium and sulfonium salts are disclosed herein.

Sensitized aromatic iodonium or aromatic sulfonium salt photoinitiator

A triarylsulfonium complex salt is described which has particular utility as a photoinitiator for the polymerization of epoxide monomers in thick films or coatings. Photopolymerizable compositions are also described.

Complex salt photoinitiator

Aromatic sulfonium compounds are sensitized to longer wavelengths of light by means of aromatic tertiary amines, aromatic tertiary diamines and certain aromatic polycyclic compounds.

Photopolymerizable composition containing a sensitized aromatic

Light sensitive diazonium compounds having an aromatic stable light sensitive nucleus with a bis-(fluorinated alkylsulfonyl) methide anion are found to be useful for many photosensitive systems. The fluorinated sulfonyl contains a highly fluorinated alkyl moiety.

Growing community of inventors

Maplewood, MN, United States of America

George H Smith