ZIRCONIUM OXIDE NANOPARTICLE
    42.
    发明公开

    公开(公告)号:EP3434648A1

    公开(公告)日:2019-01-30

    申请号:EP17769657.2

    申请日:2017-01-30

    摘要: An object of the present invention is to provide zirconium oxide nanoparticles that have excellent dispersibility in a polar solvent and are capable of increasing a core concentration in a dispersion liquid. Zirconium oxide nanoparticles according to the present invention are coated with at least one compound selected from the group consisting of R 1 -COOH, (R 1 O) 3-n -P(O)-(OH) n , (R 1 ) 3-n -P(O)-(OH) n , (R 1 O)-S(O)(O)-(OH), R 1 -S(O)(O)-(OH), and (R 1 ) 4-m -Si(R 4 ) m , wherein R 1 represents a group comprising a carbon atom and at least one element selected from the group consisting of an oxygen atom, a nitrogen atom, and a sulfur atom, and having the total number of carbon atoms, oxygen atoms, nitrogen atoms, and sulfur atoms of 8 or less.; R 4 represents a halogen atom or -OR 2 , and R 2 represents a hydrogen atom or an alkyl group; and n represents 1 or 2, and m represents an integer of 1 to 3.

    PARTICULATE WATER-ABSORBENT POLYMER AND PROCESS FOR PRODUCTION THEREOF

    公开(公告)号:EP2112172B2

    公开(公告)日:2018-10-17

    申请号:EP08703822.0

    申请日:2008-01-24

    IPC分类号: C08F2/44 C08F20/06 C08J3/24

    摘要: An object of the present invention is to provide a method for producing a particulate water-absorbent polymer particle having remarkably improved long-term color stability, without an adverse effect (such as a delay in polymerization) on synthesis of the particulate water-absorbent polymer. The method includes the steps of polymerizing a monomer aqueous solution (B) containing (i) at least one type of monomer (A) that is capable of forming a particulate water-absorbent polymer by polymerization, (ii) at least one type of crosslinking agent, (iii) at least one type of polymerization initiator and (iv) an organophosphorus compound in an amount of not less than 1 but not more than 100 ppm by mass with respect to the monomer (A) so as to form a hydrogel polymer, and drying the hydrogel polymer. The method enables to provide an excellent particulate water-absorbent polymer that realizes (i) long-term color stability and improvement in urine tolerance and (ii) absorbing property, which are in such a trade-off relationship. In this way, the above object is attained.

    WATER ABSORBENT AND PROCESS FOR PRODUCING THE SAME

    公开(公告)号:EP1878761B1

    公开(公告)日:2018-10-17

    申请号:EP06715618.2

    申请日:2006-03-13

    IPC分类号: C08J3/24 C08L101/14

    摘要: A water-absorbing agent according to the present invention includes water-absorbent resin particles having an internal cross-linked structure, wherein a vicinity of a surface of the water-absorbent resin particle is cross-linked with a surface cross-linking agent, and the water-absorbent resin particle has therein a sea-island structure having (i) part containing a first water-soluble multivalent metal salt such as aluminum sulfate and (ii) part not containing the first water-soluble multivalent metal salt. With this arrangement, it is possible to provide a water-absorbing agent having less water-soluble component content, more excellent liquid permeability, and more excellent water retention under pressure than the conventional water-absorbing agent.

    COPOLYMER COMPOSITION AND METHOD OF PRODUCING THE COMPOSITION

    公开(公告)号:EP2207823B1

    公开(公告)日:2018-08-08

    申请号:EP08847343.4

    申请日:2008-10-31

    摘要: Provided are a copolymer composition which can achieve a high level of compatibility between clay dispersibility under water having high hardness and an anti-iron deposition ability and is suitable for an additive for a detergent, and a method of producing the composition. The copolymer composition of the present invention includes a copolymer (P) which has a weight average molecular weight of 10,000 to 50,000 and contains a structural unit originating from a monoethylenic unsaturated dicarboxylic acid (or dicarboxylate) monomer (a) at 30 to 60 mol %, a structural unit originating from a monoethylenic unsaturated monocarboxylic acid (or monocarboxylate) monomer (b), and a structural unit originating from a sulfonic acid (or sulfonate) group-containing monomer (c) free of an ester bond and an amide bond, and a remaining monoethylenic unsaturated dicarboxylic acid (or dicarboxylate) monomer a content of which in terms of an acid is less than 12,000 ppm.

    COMPOSITION USABLE AS THERMAL-LATENT POLYMERIZATION INITIATOR

    公开(公告)号:EP2617752B1

    公开(公告)日:2018-07-25

    申请号:EP11825164.4

    申请日:2011-09-13

    IPC分类号: C08G59/68 C08F4/54

    CPC分类号: C08F4/52 C08F4/00 C08G59/686

    摘要: The objective of the present invention is to provide a composition used as a thermal-latent polymerization initiator which does not catalyze a polymerization at ordinary temperature but can catalyze at lower temperature and which has an excellent catalytic ability. In addition, the objective of the present invention is to provide a thermal-latent polymerization initiator consisting of the composition, a method of polymerization using the thermal-latent polymerization initiator, and a curable composition containing the thermal-latent polymerization initiator. The composition according to the present invention is characterized in comprising tris (pentafluorophenyl) borane and an amine compound having a specific piperidine structure.