E.i. Dupont De Nemours and Company

Other

University of Pennsylvania

Thomas Robert Darling

Alexei Alexeyevich Gridnev

Carl G Krespan

Robert John Barsotti

Ezio Rizzardo

Graeme Moad

Charles T Berge

Zhi Lu

Patricia Mary Ellen Sormani

Catherine Louise Moad

Bradford B Wayland

Julia Krstina

Beibei Diao

Disclosed herein are coating compositions comprising a blocked polyol having a first hydroxyl group at position 1 carbon atom and a second hydroxyl group at position 2 or 3 carbon atom, wherein both the first and the second hydroxyl groups are blocked by a single hydrolyzable orthoformate group; and a polyisocyanate compound. Methods of producing and using said coating compositions are also disclosed.

Orthoformate-protected polyols

Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of cobalt-complexed tetraphenyl porphyrin derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are disclosed herein.

Decolorization of oligomers

This invention relates to rapid curing coating compositions that are particularly useful for automotive OEM and refinish applications. The coating composition includes a crosslinkable component that contains a novel highly branched acrylic polymer, and a crosslinking component that contains conventional crosslinking agents, such as polyisocyanate and melamine. This invention is also directed to a process for producing coatings from the rapid curing coating compositions. These compositions are especially useful in providing hard highly crosslinked coatings.

Branched polymers and coating compositions made therefrom

Solid surface material is prepared from an extrudable composite material comprising a matrix of at least one acrylic resin and a filler dispersed in the matrix, said acrylic resin comprising an acrylic epoxy-ftmctional copolymer as a matrix resin crosslinked with a straight or branched chain aliphatic carboxylic acid or anhydride of such acid.

Solid surface materials prepared from extrudable acrylic composites

Process for the synthesis of block polymers, homopolymers and copolymers of narrow polydispersity having formula (1) by contacting selected vinyl monomer(s), vinyl-terminated compound(s) and free radicals in which effective control of production of polymer is achieved by controlling the mole ratio of vinyl monomer(s), vinyl-terminated compound(s) and free radicals relative to one another; and polymers produced thereby

Polymer synthesis

Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formula

Perfluorodiglycidyl ethers and precursors therefor

Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formula:

Perfluorodiglycidyl ethers

Purified hexafluoropropylene oxide is produced by scrubbing to remove impurities that inhibit polymerization of hexafluoropropylene oxide, thus permitting the preparation of polymers having a degree of polymerization of more than 200, including end-capped and chain-extended derivatives thereof.

Purification and polymerization of hexafluoropropylene oxide

Coating composition containing at least one free radical polymerizable ethylenically unsaturated monomer, and a chain extended polyurethane polymer having terminally ethylenically unsaturated groups and preferably polymeric urea linkages, said polymer having a molecular weight of between about 2,000 and 20,000. The polymerizable monomer is at least a partial solvent for the polymer. The coating compositions may be cured by free radical reactions to yield tough, mar-resistant coatings.

Growing community of inventors

Wilmington, DE, United States of America

Thomas Robert Darling