公开(公告)号：US06716526B2

公开(公告)日：2004-04-06

申请号：US10181335

申请日：2002-07-17

申请人： Rachel Clare Weston ,  Howard Roger Dungworth

发明人： Rachel Clare Weston ,  Howard Roger Dungworth

IPC分类号： B32B2700

CPC分类号： D06M23/12 ,  B01J13/14 ,  C08F291/00 ,  D01F1/10 ,  D21H21/54 ,  Y10T428/2984 ,  C08F2/22

摘要： A composition comprising particles which comprise a core material within a polymeric shell, wherein the core material comprises a hydrophobic substance, characterized in that the polymeric shell comprises a copolymer formed from a monomer blend which comprises, A) 30 to 90% by weight methacrylic acid B) 10 to 70% by weight alkyl ester of (meth)acrylic acid which is capable of forming a homopolymer of glass transition temperature in excess of 60° C. and C) 0 to 40% by weight other ethylenically unsaturated monomer. The core material can comprise an active ingredient selected from the group consisting of UV absorbers, UV reflectors, pigments, dyes, colorants, scale inhibitors, corrosion inhibitors, antioxidants, pour point depressants, wax deposition inhibitors, dispersants, flame retardants, biocides, active dye tracer materials and phase change materials. The composition has the advantage that the polymeric shell is highly impermeable to the core material even at elevated temperatures.

摘要翻译： 一种组合物，其包含在聚合物壳体内包含芯材料的颗粒，其中所述芯材料包含疏水性物质，其特征在于，所述聚合物壳包含由单体共混物形成的共聚物，所述共聚物包含：A）30至90重量％的甲基丙烯酸 B）10至70重量％的（甲基）丙烯酸烷基酯，其能够形成玻璃化转变温度超过60℃的均聚物，和C）0至40重量％的其它烯属不饱和单体。 核心材料可以包含选自紫外线吸收剂，紫外线反射剂，颜料，染料，着色剂，防垢剂，腐蚀抑制剂，抗氧化剂，倾点下降剂，蜡沉积抑制剂，分散剂，阻燃剂，杀生物剂，活性成分 染料示踪材料和相变材料。 该组合物的优点在于，即使在升高的温度下，聚合物外壳也对核心材料是非常不渗透的。