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    Method of treating wood materials
    2.
    发明授权
    Method of treating wood materials 有权

    公开(公告)号：US11981047B2

    公开(公告)日：2024-05-14

    申请号：US17272957

    申请日：2019-09-10

    Applicant: Palonot Oy

    Inventor： Jari Kukkonen ,  Timo Nissinen

    IPC: B27K3/08 ,  B27K3/02 ,  B27K3/16 ,  C09K21/12

    CPC classification number: B27K3/08 ,  B27K3/0292 ,  B27K3/166 ,  C09K21/12 ,  B27K2240/30

    Abstract: Method of treating wood products to improve fire resistance thereof. The method comprises treating wet wood objects with compositions comprising an aqueous solution of bisphosphonate selected from 1-hydroxyethane 1,1-diphosphonic acid, an alkanol amine, and optionally an alkaline agent, the composition having a pH in the range of 4.0 to 7.0 to impregnate the object with the compositions, and subjecting the object so obtained to drying to achieve aspiration of the pits of the wood object. The method can be used for protecting wood not only against fire but also against mould, rot, blue stain, insect such as termite attacks on wood, dimensional changes, or a combination thereof due to environmental influence.

    ORGANIC PHOSPHORUS-BASED COMPOUND, AND FLAME RETARDANT AND FLAME-RETARDANT PRODUCT COMPRISING THE SAME
    9.
    发明申请
    ORGANIC PHOSPHORUS-BASED COMPOUND, AND FLAME RETARDANT AND FLAME-RETARDANT PRODUCT COMPRISING THE SAME 审中-公开

    公开(公告)号：US20190218237A1

    公开(公告)日：2019-07-18

    申请号：US16328891

    申请日：2017-03-10

    Applicant: TEIJIN LIMITED

    Inventor： Katsuhiro YAMANAKA ,  Kenta IMAZATO ,  Naoshi TAKAHASHI

    IPC: C07F9/6574 ,  C09K21/12

    CPC classification number: C07F9/65746 ,  C07F9/6574 ,  C09K21/12

    Abstract: An organic phosphorus-based compound which satisfies the following requirements (i) to (viii) and is represented by the following formula (1): (i) the organic purity should be not lower than 98%; (ii) the solubility in 20° C. water should be not higher than 0.1 g/100 g of water; (iii) the total halogen component content should be not higher than 1,000 ppm; (iv) the total volatile organic matter content should be not higher than 800 ppm; (v) the Δ pH value should be not larger than 1.0; (vi) the volume standard median diameter should be not larger than 30 μm; (vii) the maximum particle diameter should be not larger than 200 μm; and (viii) the standard deviation represented by the following formula should be not larger than 20 μm. Standard deviation=(d84%+d16%)/2; wherein d84%: particle diameter at a point where the cumulative curve becomes 84% (μm), and d16%: particle diameter at a point where the cumulative curve becomes 16% (μm). In the above formula, R2 and R5 may be the same or different and are each a phenyl group which may have a substituent, naphthyl group which may have a substituent, anthryl group which may have a substituent, or branched or linear alkyl group having 1 to 4 carbon atoms which may have an aromatic substituent. R1, R3, R4 and R6 may be the same or different and are each a hydrogen atom, branched or linear alkyl group having 1 to 4 carbon atoms, phenyl group which may have a substituent, naphthyl group which may have a substituent, or anthryl group which may have a substituent.

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