Water-based resin composition and articles made therefrom

    公开(公告)号:US10752738B2

    公开(公告)日:2020-08-25

    申请号:US16227154

    申请日:2018-12-20

    Abstract: An aqueous elastomer dispersion includes a dispersed phase and an aqueous phase. The dispersed phase includes an elastomer including curable aliphatic conjugated-diene elastomers, such as polyisoprene, and a minor amount of at least one additive. The aqueous phase includes water and other optional components in either a soluble state or a dispersion state. The aqueous elastomer dispersion may be prepared by dissolving an elastomer, such as rubber, and additives in a solvent mixture and then converting the resulting solution into an aqueous emulsion. The aqueous emulsion is concentrated and the solvent is stripped from it to yield a dilute latex. The dilute latex that is obtained is concentrated again. Articles made from the aqueous elastomer dispersion include medical gloves, condoms, probe covers, dental dams, finger cots, catheters and the like.

    POLYMERIC DISPERSANTS FROM ARALKYLATED PHENOLS

    公开(公告)号:US20200255593A1

    公开(公告)日:2020-08-13

    申请号:US16836676

    申请日:2020-03-31

    Applicant: STEPAN COMPANY

    Abstract: Polymers useful in formulating dispersing agents for pigments are disclosed. One such polymer can be made from a glycidyl intermediate. A nucleophilic initiator can be reacted with epichlorohydrin to produce a glycidyl intermediate. This intermediate is reacted with an aralkylated phenol to give a hydroxy-functional hydrophobe. Alkoxylation of the hydrophobe gives the desired polymer. In an alternative, approach, the polymer is made by reacting the nucleophilic initiator with an aralkylated phenol glycidyl ether to give the hydroxy-functional hydrophobe, which is then alkoxylated. Pigments dispersions comprising the polymers are also disclosed. The polymers meet the growing needs of the industry with their ease of manufacture, diverse structures, and desirable performance attributes for dispersing a wide range of organic and inorganic pigments. Agricultural applications for the polymers are also disclosed.

    Strip for reinforcement of a hose and a method of manufacture thereof

    公开(公告)号:US10508760B2

    公开(公告)日:2019-12-17

    申请号:US15737827

    申请日:2016-07-06

    Applicant: NV Bekaert SA

    Abstract: A strip (100) intended for the reinforcement of the wall of high pressure hoses or flexible pipes is presented. The strip (100) comprises multiple wires (102) arranged side-by-side and held together by means of a hardened adhesive (104) originating from a waterborne dispersion. Different embodiments are presented wherein the wires (102) are embedded in the hardened adhesive (104), or wherein only one side of the strip (100) is covered with hardened adhesive (104) or wherein the hardened adhesive (104) is present only between the wires (102) and not on the surfaces (S1, S2) delineating the strip (100). In one preferred embodiment the wires (102) are flattened with the flats being parallel to the surfaces (S1, S2) of the strips (100).

    VINYL POLYMER PRODUCTION METHOD
    27.
    发明申请

    公开(公告)号:US20190330396A1

    公开(公告)日:2019-10-31

    申请号:US16473682

    申请日:2017-12-27

    Abstract: A method for producing a vinyl polymer by suspension-polymerizing a vinyl compound in the presence of a dispersion stabilizer, wherein the dispersion stabilizer contains a polyvinyl alcohol and a composition containing a modified polyvinyl alcohol and a compound; the modified polyvinyl alcohol contains double bonds derived from an unsaturated carboxylic acid or a derivative thereof in side chains; the compound is a compound having two or more hydroxy groups bonded to a conjugated double bond; the modified polyvinyl alcohol has a saponification degree and a viscosity-average polymerization degree different from those of the polyvinyl alcohol; a content of the compound in the composition is 0.001 parts by mass or more and less than 5 parts by mass based on 100 parts by mass of the modified polyvinyl alcohol; and a mass ratio of the composition to the polyvinyl alcohol is 50/50 to 90/10.

    METHOD FOR PRODUCING RUBBER WET MASTER BATCH
    29.
    发明申请

    公开(公告)号:US20190256670A1

    公开(公告)日:2019-08-22

    申请号:US16341238

    申请日:2017-07-21

    Inventor: Yuya KONNO

    Abstract: A method for producing a rubber wet master batch using, as raw materials, at least a rubber powder, a filler, a dispersing solvent, and a rubber latex solution, comprises a step (I) of adding, at a time of dispersing the rubber powder in the dispersing solvent, at least one portion of the rubber latex solution to the dispersing solvent to produce a rubber powder solution containing the rubber powder to which rubber latex particles adhere, a step (II) of adding the filler to the rubber powder solution, and mixing the solution and the filler with each other to produce a rubber-powder-containing slurry solution, and a step (III) of mixing the rubber-powder-containing slurry solution with a rest of the rubber latex solution, and then solidifying/drying the resultant mixture.

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