摘要:
Radiation-sensitive compositions are disclosed of a type suitable for preparing ion sensitive membranes for electrochemical ion sensors. The compositions are comprised of a radiation-sensitive polymer containing radiation-sensitive recurring units having an ionophore group and recurring units having a crosslinking group. In preparing a membrane the radiation-sensitive composition is coated onto a sensor, exposed to activating radiation to produce crosslinking in areas where the membrane structure is desired, and removed in any remaining non-exposed areas.
摘要:
An ion-sensitive electrochemical sensor comprises an electrode body having an ion-sensitive polymeric membrane coated thereon. The membrane comprises a water-insoluble copolymer having ion exchange sites and has a glass transition temperature greater than about 80.degree. C. The sensor is used to determine ion concentration by contacting it with a test solution and determining the ion concentration as a function of the potential of the electrode.
摘要:
A polymerizable composition comprises (a) an ethylenically unsaturated diluent monomer comprising an ethylenically unsaturated fluorine-containing monomer; (b) an ethylenically unsaturated monomer containing a reactive ester group capable of coupling with an amino group-containing compound by the formation of an amide link; and, (c) a polymerization initiator. A polymer produced from the composition is capable of immobilizing an amino group-containing compound e.g. a protein. Such polymers are suitable for use in a variety of biomedical applications.
摘要:
A coating fluid for application to a support to prepare an ink jet recording medium comprises an aqueous dispersion of a synthetic polymer hydrogel and gelatin, the amount of the synthetic polymer hydrogel being from 5 to 50% by weight of the combined weight of synthetic polymer and gelatin. Preferably the coating fluid also contains a mordant, an aliphatic alcohol to assist dispersion of the hydrogel polymer and a particulate material to impart a porous structure to the coating. The invention also provides an inkjet recording medium comprising a support on which is an ink-receiving layer comprising the gelatin and a synthetic polymer hydrogel. The amount of the latter may be from 0.3 to 5 g/square meter.
摘要:
An image recording medium for an ink jet printer comprises(a) a sheet of solvent absorbing microporous material which comprises a matrix of substantially water insoluble thermoplastic organic polymer, finely divided substantially water insoluble filler particles of which at least 50% by weight are siliceous particles said filler particles being distributed throughout the matrix and constituting from 40 to 90% by weight of said micorporous material, there being a network of interconnecting pores communicating substantially throughout said microporous material said pores constituting from 35 to 95% by volume of said microporous material, said sheet of microporous material having (b) a coating of a polyester. The polyester can be a condensation product obtained from dicarboxylic acids and glycols and contains sufficient hydrophilic groups such as sulphonate to make it water dispersible. The ink jet recording medium can be made by coating a sheet of the microporous material with an aqueous dispersion of a polyester resin and allowing the coated sheet to dry.
摘要:
A donor element for use in laser thermal imaging has a layer which comprises an infrared-absorbing material, an image dye and a polymer matrix comprising a thermally degradable polymer and a non thermally degradable polymer there being an interaction between the infrared-absorbing material and the non degradable polymer to facilitate retention of the infrared-absorbing material in the donor element. The degradable and non degradable polymers are preferably copolymers both of which contain methacrylic acid as a monomer. The degradable polymer is preferably a copolymer of methoxyethyl cyanoacrylate and methacrylic acid preferably in molar proportions of from 1:1 to 12:1. The non degradable polymer is preferably a copolymer of methyl methacrylate and methacrylic acid, preferably in molar proportions of from 1:1 to 15:1. The element may be prepared from an aqueous solid particle dispersion which has been prepared by milling the components together in a ball mill.
摘要:
An image-recording element for inkjet ink images comprises a support, an ink-receptive layer and a top layer, wherein the top layer comprises a polymer that contains both a hydrophilic component and a hydrophobic component, or a mixture of two or more such polymers, the said polymer or polymer mixture being present in the top layer in an amount of from 0.003 to 0.5 g/m2, and wherein the top layer has been hardened with an oxazoline functional polymer. The top layer preferably comprises a polymer that contains both hydrophilic substituents and hydrophobic substituents, for example a polymer selected from the polymers and copolymers of acrylic acid, methacrylic acid, acrylic acid esters or methacrylic acid esters, or a salt of such a polymer or copolymer. The base layer, which may comprise gelatin, preferably has a thickness of from 3 to 20 &mgr;m. The support may be a conventional support, for example a paper sheet. The invention can provide improved drying times for the inkjet images, even under conditions of high humidity.
摘要翻译:用于喷墨油墨图像的图像记录元件包括载体,油墨接收层和顶层,其中顶层包含含有亲水组分和疏水组分的聚合物,或两种或更多种这样的聚合物的混合物 所述聚合物或聚合物混合物以0.003至0.5g / m 2的量存在于顶层中,并且其中顶层已用恶唑啉官能聚合物硬化。 顶层优选包含含有亲水取代基和疏水取代基的聚合物,例如选自丙烯酸,甲基丙烯酸,丙烯酸酯或甲基丙烯酸酯的聚合物和共聚物的聚合物,或这种聚合物或共聚物的盐 。 可以包含明胶的基层优选具有3-20μm的厚度。 支撑件可以是常规支撑件,例如纸张。 本发明即使在高湿度的条件下也能为喷墨图像提供改善的干燥时间。
摘要:
A hydrophilic crosslinkable copolymer comprising monomer units derived from an ester of an ethylenically unsaturated carboxylic acid wherein the ester group contains a labile primary hydroxyl group and monomer units derived from a halohydroxyalkyl ester of an ethylenically unsaturated carboxylic acid is disclosed. The copolymer is useful in affinity separation systems.