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    • 38. 发明申请
    • INTERPOLYMER RESIN PARTICLES
    • 内嵌树脂颗粒
    • WO2005065938A1
    • 2005-07-21
    • PCT/US2004/041078
    • 2004-12-08
    • NOVA CHEMICALS INC.KRUPINSKI, Steven, M.
    • KRUPINSKI, Steven, M.
    • B32B27/00
    • C08L25/00C08F255/00C08F255/02C08L23/02C08L25/06C08L2666/06C08F212/08C08L2666/04C08F212/00
    • Interpolymer resin particles comprised of 20% to 60% by weight of uncross-linked polyolefin e.g. polyethylene, polypropylene, and from 40% to 80% by weight based on the weight of the particles of a vinyl aromatic monomer, e.g. styrene, that is polymerized in a suspension process or form an interpenetrating network of polyolefin with polymerized vinyl aromatic monomer particles and having a gel content of 0 to 1.5% by weight based on the weight of the particles for improved processability in end-use applications and improved ESCR properties. The interpolymer resin particles have a VICAT softening temperature from about 90°C to about 115°C, and a melt index from 0.2 to 35.0g/10 minutes (Condition ). The particles can be mixed with a blowing agent to form extruded foam articles, such as foam board, and can be used in extrusion, injection molding, rotomolding, and thermoforming processes to form a layer, e.g. sheet, film, and as a tie layer in multi-layer structures to bind adjacent layers consisting of incompatible polymers, i.e. polystyrene and polyethylene for improved rigidity in multi-layer structures.
    • 包含20重量%至60重量%的未交联聚烯烃的共聚物树脂颗粒 聚乙烯,聚丙烯,和40重量%至80重量%,基于乙烯基芳族单体的颗粒的重量,例如乙烯基芳族聚合物。 苯乙烯,其以悬浮方法聚合或形成聚烯烃与聚合的乙烯基芳族单体颗粒的互穿网络,并且具有基于颗粒重量的0至1.5重量%的凝胶含量,以改善最终用途应用中的加工性能, 改善ESCR性能。 互聚物树脂颗粒的VICAT软化温度为约90℃至约115℃,熔体指数为0.2至35.0g / 10分钟(条件)。 颗粒可以与发泡剂混合以形成挤出的泡沫制品,例如泡沫板,并且可以用于挤出,注射成型,滚塑和热成型工艺以形成层,例如泡沫板。 片,膜和作为多层结构中的连接层以结合由不相容聚合物组成的相邻层,即聚苯乙烯和聚乙烯,以提高多层结构中的刚度。
    • 39. 发明申请
    • TRANSPARENT HIGH IMPACT ALLOY
    • 透明高冲击合金
    • WO2003051973A1
    • 2003-06-26
    • PCT/US2002/037043
    • 2002-11-19
    • NOVA CHEMICALS INC.
    • DONN, Allen, M.COOPER, Richard
    • C08K5/10
    • C08K5/0016C08L25/14C08L53/02C08L2666/24C08L2666/04
    • An improved tough, transparent polymer alloy comprised of 90 to 20 weight percent of a brittle polymer with a weight average molecular weight greater than 180,000; 0 to 60 weight percent of a rubbery polymer; 0 to 80 weight percent of a ductile polymer; and between greater than 0.4, i.e. between 0.5 and 3 weight percent of a plasticizer, i.e., mineral oil which resides in the brittle polymer. The brittle polymer can have molecular weights between 220,000 and 300,000, and may be as high as 400,000. In one of the preferred embodiments the brittle polymer is a copolymer of styrene and methyl methacrylate which copolymer ranges between 50 and 55 weight percent, the rubbery polymer is 0 weight percent, the ductile polymer is a styrene butadiene block copolymer ranging between 45 and 50 weight percent, and the mineral oil is 1.5 weight percent. Notched IZOD impact strength ranges between 1.0 to 6.0 ft-lb./in., preferably between 2.0 and 4.5 ft-lb./in. The haze can be less than 1.5% or it can be between 1 and 4%.
    • 一种改进的韧性透明聚合物合金,其包含90至20重量%的重均分子量大于180,000的脆性聚合物; 0〜60重量%的橡胶状聚合物; 0至80重量%的延性聚合物; 和大于0.4,即0.5至3重量%的增塑剂,即位于脆性聚合物中的矿物油。 脆性聚合物的分子量可以在22万到30万之间,并且可以高达400,000。 在优选实施方案之一中,脆性聚合物是苯乙烯和甲基丙烯酸甲酯的共聚物,其共聚物的范围为50至55重量%,橡胶状聚合物为0重量%,延性聚合物为苯乙烯丁二烯嵌段共聚物,其重量比为45至50重量% 百分比,矿物油为1.5重量%。 缺口IZOD冲击强度范围为1.0至6.0英尺/英寸/英寸,优选2.0至4.5英尺/英寸/英寸。 雾度可以小于1.5%,或者可以在1%和4%之间。