Abstract:
L'invention concerne un procédé de réalisation d'un film de copolymères à blocs auto assemblés sur un substrat, ledit procédé consistant à effectuer un dépôt simultané de copolymère à blocs et de copolymère statistique au moyen d'une solution contenant un mélange, de copolymère à blocs et de copolymère statistique de nature chimique différente et non miscibles, puis à effectuer un traitement de recuit permettant la promotion de la ségrégation de phases inhérente à l'auto-assemblage des copolymères à blocs.
Abstract:
Stable, water-dispersible block copolymer coating compositions are produced from water-indispersible organic polymers having a plurality of hydroxyl groups and water-dispersible organic polymer having a plurality of carboxylic acid anhydride groups by controlled esterification.
Abstract:
Described herein are coatings and formulations thereof for coating a substrate for use in producing a lubricious coating on a substrate surface that is to be inserted into the body lumen of a subject. Said coatings all contain an adhesion promoting coating formulation for applying to a substrate material that is formed from a polymeric adhesion promoter, a monomeric or polymeric crosslinking agent and a photoinitiator, where the polymeric adhesion promoter is a block copolymer comprising hydrophobic and hydrophilic polymer blocks and/or a hydrophilic polymer comprising hydrophilic functional groups, where from 10% to 100% of the hydrophilic functional groups are capped with a hydrophobic functional group and the formulations thereof further contain a solvent to enable the coating to be applied to a substrate surface.
Abstract:
A hydrophilic polymer matrix wherein the polymer matrix comprises one or more monomers or polymers selected from the group consisting of Diglycidyl Ethers, Polyacrylamides, Polyvinyls, Polysaccharides, Polyesters, Esters, Polyethylene Glycols, Polypropylene Glycols, Butanediols, Epoxides or other hydrophilic polymers that are crosslinked to form a flexible non-soluble polymer matrix that has more than one excess or unreacted molecule and wherein excess molecules are available or have electrons available for one or more charge coupling or bonding reactions that are reversible, with one or more target molecules such as but not limited to salts, chlorides, acids and or ion species solvated in water or other solvent.
Abstract:
Substrates, such as the interior surfaces of food containers, can be coated using a composition including a phenolic modified polyester resin prepared using a formulation not including Bisphenol A as a component or subcomponent. These polymers arid subsequent coatings are free of both mobile and bound Bisphenol A moieties. These polymers and resulting coatings have properties similar to and, in some embodiments, superior over comparable conventional polyester coatings.
Abstract:
Methods for forming a graft copolymer of a poly(vinylidene fluoride)-based polymer and at least one type of electrically conductive polymer, wherein the electrically conductive polymer is grafted on the poly(vinylidene fluoride)-based polymer are provided. The methods comprise a) irradiating a poly(vinylidene fluoride)-based polymer with a stream of electrically charged particles; b) forming a solution comprising the irradiated poly(vinylidene fluoride)-based polymer, an electrically conductive monomer and an acid in a suitable solvent; and c) adding an oxidant to the solution to form the graft copolymer. Graft copolymers of a poly(vinylidene fluoride)-based polymer and at least one type of electrically conductive polymer, wherein the electrically conductive polymer is grafted on the poly(vinylidene fluoride)-based polymer, nanocomposite materials comprising the graft copolymer, and multilayer capacitors comprising the nanocomposite material are also provided.