Jonathan D. Goetz - Sarver PA Kurt A. Humbert - Pittsburgh PA Karl F. Schimmel - Verona PA Karen A. Barkac - Murrysville PA Simion Coca - Pittsburgh PA Joanne H. Smith - Allison Park PA
Assignee:
PPG Industries Ohio, Inc. - Cleveland OH
International Classification:
C08L 5300
US Classification:
525 88, 525 92 R, 525 92 H, 525 93, 525 94
Abstract:
A thermosetting composition that includes a first reactant having functional groups; a second reactant having functional groups coreactive with the functional groups of the first reactant; and a block copolymer flow control agent. The block copolymer includes a first block made up of residues of a radically polymerizable fluoroalkyl(meth)acrylate monomer, a second block made up of residues of a second radically polymerizable ethylenically unsaturated monomer, and optionally a third block made up of residues of a third radically polymerizable ethylenically unsaturated monomer. The first, second and third blocks are made of different residues from each other and the block copolymer has a polydispersity index of less than 2. 5. Also disclosed is a method of coating a substrate including the steps of applying the present thermosetting composition to the substrate; coalescing the thermosetting composition to form a substantially continuous film; and curing said thermosetting composition by the application of heat.
Jonathan D. Goetz - Sarver PA Kurt A. Humbert - Pittsburgh PA Karl F. Schimmel - Verona PA Karen A. Barkac - Murrysville PA Simion Coca - Pittsburgh PA Joanne H. Smith - Allison Park PA
A block copolymer including a block of residues of a low surface tension (meth)acrylate monomer; a block of residues of a monomer free of hydroxyl group and amine group residues; and, optionally, a third block of residues of a monomer free of hydroxyl groups and amine groups. The first, second and third blocks are made of different residues from each other and the block copolymer has a polydispersity index of less than 2. 5. A controlled radical polymerization method is disclosed to make the low surface tension block copolymers. The method includes the steps of sequentially adding a first monomer composition that is free of hydroxyl groups and amine groups and a second monomer composition that includes the low surface tension monomer to a suitable atom transfer radical polymerization initiator and polymerizing the monomer compositions to form a block copolymer.
Photoimageable Electrodepositable Photoresist Composition For Producing Non-Tacky Films
Jonathan D. Goetz - Gibsonia PA Charles F. Kahle - Allison Park PA
Assignee:
PPG Industries, Inc. - Pittsburgh PA
International Classification:
G03C 173
US Classification:
430284
Abstract:
An electrodepositable photoresist composition for producing non-tacky films on an electroconductive substrate comprises an aqueous dispersion of a water-dispersible photosensitive ionic polymeric material and a polyalkylene oxide-modified polysiloxane sufficient to give slip and blocking properties that enables direct placement of a photomask on the resultant dehydrated film. The composition also preferably contains a nonionic unsaturated material and a photoinitiator.
Karl F. Schimmel - Verona PA Karen A. Barkac - Murrysville PA Kurt A. Humbert - Allison Park PA Jonathan D. Goetz - Sarver PA James B. O'Dwyer - Valencia PA
Assignee:
PPG Industries Ohio, Inc. - Cleveland OH
International Classification:
C08F29700 C08F22034 C08F22028
US Classification:
525294
Abstract:
Block copolymers containing at least two blocks are provided and comprise: (a) a first block containing residues of at least one first ethylenically unsaturated radically polymerizable monomer that is free of hydroxy functionality, e. g. , 2-ethylhexyl methacrylate, and a minor amount of at least one hydroxy functional ethylenically unsaturated radically polymerizable monomer, e. g. , hydroxypropyl methacrylate; and (b) a second block containing residues of at least one second ethylenically unsaturated radically polymerizable monomer that is free of hydroxy functionality, e. g. , iso-butyl methacrylate, and a minor amount of at least one hydroxy functional ethylenically unsaturated radically polymerizable monomer. The calculated Tg of the second monomer of the block copolymer is at least 20. degree. C. greater than the calculated Tg of the first monomer.
Karl F. Schimmel - Verona PA Karen A. Barkac - Murrysville PA Kurt A. Humbert - Allison Park PA Jonathan D. Goetz - Sarver PA James B. O'Dwyer - Valencia PA
Assignee:
PPG Industries Ohio, Inc. - Cleveland OH
International Classification:
C08L 5300 C08L 6300 C08F 800
US Classification:
525111
Abstract:
Thermosetting coating compositions, e. g. , powder coating compositions, are provided and comprise: (a) a first reactant having functional groups, e. g. , an epoxide functional (meth)acrylic polymer; (b) a second reactant having functional groups that are co-reactive with the functional groups of the first reactant, e. g. , a carboxylic acid functional crosslinking agent; and (c) a polymeric flow control agent. The flow control agent is a block copolymer prepared by controlled radical polymerization and comprises: (i) a first block containing residues of at least one first ethylenically unsaturated radically polymerizable monomer that is free of hydroxy functionality; and (ii) a second block containing residues of at least one second ethylenically unsaturated radically polymerizable monomer that is free of hydroxy functionality. The second monomer of the flow control agent has a calculated Tg of at least 20. degree. C. greater than that of the first monomer.
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