摘要:
To provide a fluorinated copolymer and a water/oil repellent composition, whereby adequate water/oil repellency and excellent dynamic water repellency are obtainable and environmental impact is low. A fluorinated copolymer comprising units (A1) derived from a macromonomer wherein the average polymerization degree of e.g. 2-perfluorohexylethyl acrylate is from 20 to 30, and units (B) derived from a monomer (b) which has no fluoroalkyl group and no cross-linkable functional group and of which the glass transition temperature, when formed into a homopolymer, is from 50 to 150° C., wherein the average polymerization degree of the macromonomer per one molecule of the fluorinated copolymer is at least 1, and a water/oil repellent composition containing such a fluorinated copolymer.
摘要:
Provided are surface-modified elastic bodies (e.g. gasket for syringes) each obtained by a surface modification method for modifying a rubber vulcanizate or a thermoplastic elastomer, the method being capable of providing surfaces with excellent properties such as excellent sliding properties, excellent durability against repeated sliding motion, and excellent performance in preventing adsorption and aggregation of proteins, and allowing the surfaces to maintain the sealing properties, without using expensive self-lubricating plastics. The invention relates to surface-modified elastic bodies (e.g. gasket for syringes) at least partially having a surface modified by a surface modification method including: step 1 of forming polymerization initiation points on a surface of an object to be modified that includes a rubber vulcanizate or thermoplastic elastomer, and step 2 of radically polymerizing a monomer containing a C—N bond in a molecule thereof, starting from the polymerization initiation points, to grow polymer chains on the surface of the object.
摘要:
A photopolymerizable polymer micelle includes a spherical micelle that encapsulates a hydrophobic photopolymerization initiator, the spherical micelle being formed by a block copolymer having a hydrophilic block segment and a hydrophobic block segment, the block copolymer having a number average molecular weight exceeding 10000, and the hydrophobic block segment at least partially having a radically polymerizable group.
摘要:
A graft copolymer having a side chain graft-polymerized by atom transfer living radical polymerization (ATRP) on a main chain polymerized by organotellurium-mediated living radical polymerization (TERP), wherein the molecular weight distribution is such that Mw/Mn is 1.5 or less. The graft copolymer is also such that a main chain moiety mainly consisting of the main chain and a side chain moiety mainly consisting of the side chain have microphase-separated structures. The graft copolymer has a narrow molecular weight distribution and forms microphase-separated structures through self organization of hydrophobic and hydrophilic moieties.
摘要:
A method for producing polymer coatings by surface initiated polymerization from a plasma deposited coating is provided. The modification of surfaces by polymer attachment is a versatile and efficient means of controlling interfacial properties, such as surface energy (i.e. wetting behavior), permeability, bio-activity, and chemical reactivity. The present invention provides a method whereby a plasma deposited coating is applied to a substrate and the polymer coating formed by surface initiated polymerization is formed on the coating rather than the substrate itself. This means that the growth of the polymer using the grafting from procedure can be performed efficiently and independently of the substrate from.
摘要:
Aluminum trialkyl and aluminum dialkyl monohalide catalysts can be used to graft cationically polymerizable monomers, such as styrene, chloroprene, isobutylene, etc. to halogenated polymers with some highly reactive halogen atoms such as PVC, neoprene, chlorobutyl, etc.
摘要:
THE INVENTION RELATES TO A COMPOSITION HAVING HIGH INITIAL ADHESIVE STRENGTH CONSISTING OF A MIXTURE OF (A) A SYNTHETIC HIGH MOLECULAR WEIGHT VINYL COMPOUND IN AQUEOUS DISPERSION WITH (B) A RESIN ACID SURFACE ACTIVE AGENT AND (C) A VINYL POLYMER EMULSION.
摘要:
A novel material is provided herein which is suitable for use in a precursor of a polymer coating material that coats a polymer on a surface of a base material to provide the base material with surface modification and/or functionality assignment. A composite material characterized in that a compound having a polymerization initiation site containing a halogen group is incorporated in a crosslinked structure comprising a catechol derivative or a phenol derivative represented by the following formula (I). In the formula (I), R may be interrupted by an oxygen molecule and represents a hydrocarbon group with 2 to 20 carbons that has at least one double bond site, and A represents a hydrogen atom, a hydroxyl group, or an alkoxy group with 1 to 20 carbons.
摘要:
Provided is a fluorine-based surfactant including a copolymer synthesized by copolymerizing, as essential monomers, a polymerizable monomer (A) having a poly(perfluoroalkylene ether) chain and polymerizable unsaturated groups at both ends of the chain and a polymerizable monomer (B) having an oxyalkylene group and a polymerizable unsaturated group. The fluorine-based surfactant cannot structurally generate PFOS or PFOA, which tend to accumulate in the environment and living bodies; even when the fluorine-based surfactant has lower fluorine content than surfactants having a fluoroalkyl group having 8 or more carbon atoms, the fluorine-based surfactant has a higher capability of decreasing surface tension than the surfactants. Accordingly, the fluorine-based surfactant can be suitably used as a leveling agent for a coating composition, a resist composition, or the like.