摘要:
Aqueous polymer dispersions, which, in addition to water and a dispersed copolymer composed of at least two monomers selected from the group consisting of ethylene, propylene, butylene, isoprene, butadiene, styrene, acrylonitrile, acrylic acid, methacrylic acid, acrylic acid alkyl ester, methacrylic acid alkyl ester, vinyl ester, and vinyl chloride, also comprises a comb polymer having side chains that are bound to the main chain by ester or ether groups. The aqueous polymer dispersions are particularly suited for use together with hydraulic and latently hydraulic binding agents. The aqueous polymer dispersions are extremely efficient and result in a strong increase in the mechanical values and a relevant decrease in the porosity and the water absorption property.
摘要:
A proton exchange membrane for a fuel cell, comprising a graft (co)polymer comprising a main chain and grafts comprising at least one proton acceptor group and at least one proton donor group.
摘要:
A photosensitive resin composition is provided which provides a high resolution even when a pattern is formed using a low exposure intensity (in particular, less than 200 mJ/cm2) and may inhibit deterioration in pattern rectangularity during a post baking process of a post treatment. The photosensitive resin composition includes: a resin; an oxime photopolymerization initiator; a UV absorbing agent; and a monomer containing a hydrogen bonding group, the amount of the monomer containing a hydrogen bonding group being 30 mass % or more with respect to the total solid content of the composition, and the photosensitive resin composition is used for forming a solid-state imaging device.
摘要翻译:提供一种感光性树脂组合物,即使在使用低曝光强度(特别是小于200mJ / cm 2)的图案形成时也能提供高分辨率,并且可以抑制后处理的后烘烤过程中的图案矩形性的劣化。 感光性树脂组合物包括:树脂; 肟光聚合引发剂; 紫外线吸收剂; 和含有氢键基团的单体,相对于组合物的总固体成分,含有氢键基的单体量为30质量%以上,感光性树脂组合物用于形成固体成像 设备。
摘要:
A process for producing polymer microparticles by suspension polymerization of a vinyl-based monomer in which, when polymer microparticles are produced by suspension polymerization of a vinyl-based monomer, a macromonomer having a radically polymerizable unsaturated group at a terminus of a vinyl-based monomer-derived polymer is used as a dispersion stabilizer.
摘要:
The present invention provides multistage aqueous polymer dispersions which are film-forming at low temperatures, exhibit good blocking resistance in a formulation, even at elevated temperatures, display low foam propensity, and possess good wet adhesion and shelf life, processes for their preparation, and the use thereof as binders for coating substrates.
摘要:
A method is described for producing an aqueous thickener dispersion from a monomer composition made of at least one ethylenically unsaturated carboxylic acid and at least one ethylenically unsaturated hydrophobic monomer, (i) an at least partially polymerized pre-emulsion being produced from 10 to 80 wt.-% of said monomer composition, and (ii) the residual quantity of said monomer composition being added completely to the at least partially polymerized pre-emulsion and initiating a radical polymerization. The monomer composition preferably also comprises an associative monomer. The method avoids disadvantages of batch polymerization, such as inadequate batch-to-batch reproducibility and safety problems.
摘要:
The present invention relates to “grafting to” methods of modifying materials surfaces with high-density polymer brushes. A method of the present invention comprises contacting in succession or simultaneously an activated material surface, a solution of a polymeric material having a polymeric backbone with pendant reactive moieties, and a melt of brush-forming terminally-functionalized polymer chains, in order to allow a covalent bonding reaction to occur between surface and polymers, wherein upon completion of the reaction, the polymeric material forms a layer between the material surface and the brush polymer chains.
摘要:
Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C═O)OR′, wherein R′ is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.
摘要:
A coating composition for a food or beverage can that includes an emulsion polymerized latex polymer formed by combining an ethylenically unsaturated monomer component with an aqueous dispersion of a water-dispersible polymer.
摘要:
Disclosed is a dispersant having a multifunctional head, and a phosphor paste composition comprising the dispersant. The dispersant has a multifunctional head that comprises an acidic group, a basic group and an aromatic group, thereby enhancing an affinity for the surface of phosphor particles and improving dispersibility.