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A method for the preparation of pigmented, barium sulfate hold strength acrylic glass panes
A method for the preparation of pigmented, barium sulfate hold strength acrylic glass panes
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机译:一种有色硫酸钡保持力丙烯酸玻璃板的制备方法
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摘要
Pigment based mainly on BaSO4 is used in form of paste containing 3-6 wt.% hexaalkyl-, pref. hexamethyl-phosphoric acid triamide. This is added in production of acrylic glass sheets, by polymerising methyl methacrylate and opt minor amounts of other monomers, e.g. acrylates, acrylonitrile and styrenes in flat compartments. Additives prevents sedimentation and agglomeration of BaSO4, which cause chalking and uneven light transmission, esp. after drawing. These sheets are used in production of lights.
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