摘要:
The invention is generally related to a soft contact lens which comprises a hydrogel lens body and a coating of a hydrophilic copolymer thereon and to a method for producing the same. The hydrogel lens body comprises or is made of a polymeric material having 1,2- and/or 1,3-diol moieties, and the hydrophilic copolymer comprises arylborono-containing repeating units each having a boronic acid group. The coating is covalently-attached to the hydrogel lens body through cyclic boronic ester linkages each formed between one boronic acid group and one 1,2-diol or 1,3-diol group. The soft contact lens has a surface lubricity higher than the surface lubricity of the lens body.
摘要:
Composite material comprising a) a porous matrix material comprising a siloxane polymer, comprising a closed porosity volume fraction and, optionally, an open porosity volume fraction, and b) a conductive or semiconductive filler substantially present in said closed porosity volume fraction of said porous matrix material a), films, coated substrates and multilayer systems comprising the composite material and the use thereof in pressure sensing devices.
摘要:
The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a tackifier, and a binder, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a tackifier, and a binder.
摘要:
A coating composition comprising a silicone component is disclosed. The silicone component comprises a silicone comprising at least one silicon-bonded hydrogen and a silicone comprising at least one ethylenically unsaturated group. Articles, such as packages, coated at least in part with such coatings are also disclosed.
摘要:
Microparticles and Nanoparticles crosslinked polymer derived from 2-(2' -hydroxy-5 '-methacryloxyethylphenyl)-2H-benzotriazole or a derivative thereof, are disclosed. Process of preparing the polymeric nanoparticles per se and incorporated in or on a substrate are also disclosed. Uses of the polymeric nanoparticles and of substrates incorporating same, particularly for UV absorbing films, are also disclosed.
摘要:
A composition for rendering a hydrophobic surface hydrophilic. A hydrophobic binder, typically a silicone compound such as a siloxane, attaches hydrophilic sol-gel particles to the surface, such as hydrophobic regions of a silicone contact lens. Hydrophilic regions are preferably unmodified. The binder attaches to the particles via functional groups, and can autoadhere to the hydrophobic surface. A coating of the composition can be deposited from solution at ambient or room temperature, allowing coating of temperature sensitive substrates. Such coatings can withstand heating (such as for sterilization) in acidic solutions, retaining their hydrophilic properties.
摘要:
Embodiments of the present disclosure are directed to primer coatings, polymeric substrates, and methods of producing thereof, which provide enhanced adhesion and enhanced barrier properties. The primer coatings comprise an aqueous mixture of amorphous polyvinyl alcohol, an adhesion promoter comprising one or more of polyethylene and polyurethane, a crosslinker, and optionally, a catalyst. The coated polymeric substrates comprise a polymeric substrate and a coating dispersed over the polymeric substrate, where the coating dispersed over the polymeric substrate comprises amorphous polyvinyl alcohol, an adhesion promoter, and a crosslinker. The methods for making coated polymeric substrates comprise stretching a polymeric substrate, applying a coating of amorphous polyvinyl alcohol, an adhesion promoter, and a crosslinker to at least one surface of the stretched polymeric substrate, and curing the coating onto at least one surface of the stretched polymeric substrate.
摘要:
A multi-layered structure of at least a base-layer comprising glass fibers and a paint-based protective layer or a paste-based protective layer, the protective layer being non-intumescent, wherein the protective layer exhibits at atmospheric pressure during an increase in ambient temperature, a drop in its thermal conductivity.
摘要:
Described herein is a multilayer article comprising: a. a polymer substrate comprising an abstractable atom; and b. a hydrogel coating thereon wherein the hydrogel coating has a water content of at least 10 wt% and is covalently bonded to the polymer substrate, and wherein the hydrogel coating is derived from an aqueous composition having a pH less than 9.5, the aqueous composition comprising: (a) a hydrophilic monomer selected from at least one of (meth)acrylate or (meth)acrylamide; (b) at least 0.1 wt% of a water-swellable clay; (c) a first initiator, wherein the first initiator is water-soluble and is a Type I photoinitiator; and (d) a second initiator, wherein the initiator is water-soluble and is a Type II photoinitiator; and (e) an acid.