Abrasion resistant coating for stacks of fiber cement siding

    公开(公告)号:US07238391B2

    公开(公告)日:2007-07-03

    申请号:US10000057

    申请日:2001-11-01

    Abstract: This invention relates to a novel stack of siding, comprising: first and second coated siding pieces comprising an outer topcoat layer, an inner decorative coating layer and a fiberboard cement substrate layer; and a liner positioned between the first and second coated siding pieces. The siding, during normal transportation and installation, retains an acceptable appearance that is substantially free of viewable scratches or mars. In more preferred embodiments, the outer topcoat layer of the siding has a thickness of at least 8 microns and comprises a polyurethane dispersion. The present invention also provides novel methods of pre-finishing a fiberboard cement siding product, comprising the steps of: providing a fiberboard cement substrate layer; coating a first major surface of the fiberboard cement substrate with a decorative coating; coating the exposed surface of the decorative coating with a topcoat layer; and curing the topcoat layer to provide an abrasion resistant siding. More preferably, the curing step comprises a process that does not require heating the siding to a board surface temperature in excess of 100° C.

    Urethane acrylate gel coat resin and method of making
    290.
    发明申请
    Urethane acrylate gel coat resin and method of making 审中-公开
    聚氨酯丙烯酸酯胶衣树脂及其制造方法

    公开(公告)号:US20060167208A1

    公开(公告)日:2006-07-27

    申请号:US10521225

    申请日:2003-07-21

    CPC classification number: C09D175/16 C08G18/672 C08G18/42 C08G18/68

    Abstract: An improved urethane acrylate gel coat resin, its method of manufacture, and its use in gel coat compositions are disclosed. The urethane acrylate gel coat resin contains terminal acrylate moieties and is the reaction product of an oligoester of weight average molecular weight about 200 to about 4000, a diisocyanate, and a hydroxyalkyl (meth)acrylate. The gel coat resin is used in gel coat compositions that exhibit good weatherability and color stability after cure.

    Abstract translation: 公开了一种改进的聚氨酯丙烯酸酯凝胶涂层树脂,其制造方法及其在凝胶涂层组合物中的用途。 聚氨酯丙烯酸酯凝胶涂层树脂含有末端丙烯酸酯部分,是重均分子量约200至约4000的低聚物与二异氰酸酯和(甲基)丙烯酸羟烷基酯的反应产物。 凝胶涂层树脂用于在固化后表现出良好的耐候性和颜色稳定性的凝胶涂层组合物中。

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