公开(公告)号：US06165549A

公开(公告)日：2000-12-26

申请号：US307680

申请日：1999-05-10

申请人： Youichi Takizawa ,  Ryuuji Sakashita ,  Susumu Kawase

发明人： Youichi Takizawa ,  Ryuuji Sakashita ,  Susumu Kawase

IPC分类号： B05D3/02 ,  C08F265/06 ,  B05D5/10

CPC分类号： B05D3/0254 ,  B05D3/0209 ,  C08F265/06 ,  C08F2/02

摘要： A process for producing a solvent-free acrylic sheet includes a coating step which may involve either coating at least one support with a solvent-free syrupy composition for coating polymerization or applying the solvent-free coating polymerization syrupy composition between at least two supports at a coating thickness of at least 0.15 mm to form a laminate. The solvent-free coating polymerization syrupy composition includes an acrylic vinyl monomer capable of radical polymerization.The process further includes a heating polymerization step in which the laminate is heated at 60.degree. C. or higher for reaction initiation so that autoexotherm is induced to cause the acrylic vinyl monomer to polymerize.The process concludes with an aging polymerization step in which the laminate having undergone the heating polymerization step is maintained at a temperature that is at least 30.degree. C. but lower than the heating temperature of the heating polymerization step so that a polymerization reaction is effected until the content of residual monomer in the laminate is 2% by weight or less based on the solvent-free coating polymerization syrupy composition to produce a thick acrylic sheet.

摘要翻译： 一种制备无溶剂的丙烯酸类片材的方法包括一种包衣步骤，该包衣步骤可以包括用至少一种载体涂覆无溶剂糖浆组合物进行涂覆聚合，或者在至少两种载体之间施加无溶剂涂料聚合糖浆状组合物 涂层厚度至少为0.15mm以形成层压体。 无溶剂涂布聚合糖浆组合物包括能够进行自由基聚合的丙烯酸乙烯基单体。 该方法还包括加热聚合步骤，其中层压体在60℃或更高温度下加热以进行反应开始，从而引起自动升温以使丙烯酸乙烯基单体聚合。 该方法结束于老化聚合步骤，其中已经经历加热聚合步骤的层压体保持在至少30℃但低于加热聚合步骤的加热温度的温度，使得进行聚合反应直到 基于无溶剂涂布聚合糖浆组合物，层压体中残留单体的含量为2重量％以下，制成厚丙烯酸系片。