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    Urea-HCHO-dicyndiamide-oxy acid of phosphorus fire-retardant formulation and products
    1.
    发明授权
    Urea-HCHO-dicyndiamide-oxy acid of phosphorus fire-retardant formulation and products 失效
    尿素-HCHO-dicyndiamide-oxy acid的磷阻燃配方及产品

    公开(公告)号：US3887511A

    公开(公告)日：1975-06-03

    申请号：US31095872

    申请日：1972-11-30

    申请人： CANADIAN PATENTS DEV

    发明人： JUNEJA SUBHASH C

    IPC分类号： C09K3/00 ,  B27K3/15 ,  B27K3/52 ,  C08G12/00 ,  C08G12/10 ,  C08G12/40 ,  C08L61/00 ,  C08L61/20 ,  C09D5/18 ,  C09D161/20 ,  C09K21/12 ,  C08G37/28 ,  C08G9/14 ,  C08G51/24

    CPC分类号： C08G12/40 ,  B27K3/153 ,  B27K2240/30

    摘要： A stable fire-retardant formulation for use on wood and other cellulosic products is formed from a urea (about 1-10 moles) and dicyandiamide (about 1-11 moles) partially reacted in aqueous solution of pH about 7.5 to 9 with formaldehyde at from about 60* to 90*C until a clear solution is obtained. This incompletely-reacted clear solution is cooled to below 50*C preferably about 25* to 35*C and mixed with an oxy-acid of phosphorus to give a formulation suitable for impregnation and having a long storage-or pot-life. The amount of formaldehyde should be about 1.2 to 3 moles and the amount of the P acid from about 0.5 to 2 moles, both per mole of urea plus dicyandiamide. The resin can be cured and insolubilized by heating to about 50*-110*C e.g. in situ in the cellulosic product. The product has leach resistant flame-retardancy, glow and decay resistance, and is non-blooming. The natural appearance of wood is not altered by the treatment.

    摘要翻译： 用于木材和其它纤维素产品的稳定的阻燃制剂由pH约7.5至9的水溶液中部分反应的脲（约1-10摩尔）和双氰胺（约1-11摩尔）形成，其中甲醛 约60-90℃，直至得到澄清溶液。 将这种未完全反应的澄清溶液冷却至低于50℃，优选约25至35℃，并与磷的氧酸混合，得到适于浸渍并具有长存储或适用期的制剂。 甲醛的量应为约1.2至3摩尔，P酸的量为约0.5至2摩尔，每摩尔尿素加双氰胺。