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    • 33. 发明申请
    • Weatherfast pigmented polystyrene
    • Weatherfast着色聚苯乙烯
    • US20050148705A1
    • 2005-07-07
    • US10990578
    • 2004-11-17
    • John AdamsRoger ReinickerJustin WhiteGerald Capocci
    • John AdamsRoger ReinickerJustin WhiteGerald Capocci
    • C08J9/00C08K3/04C08K5/00C08K5/34
    • C08J9/0014C08J2325/06C08K3/04C08K5/0008C08L25/06
    • The invention is directed to weatherable pigmented extruded polystyrene molded or extruded foam articles for use in outdoor applications or applications which require high weatherfastness. The weatherfast pigmented polystryene compositions can be prepared by incorporating by extrusion or molding (a) a foam polystyrene homopolymer or copolymer (b) at least one compound selected from an light absorber, (c) at least one compound selected from the group consisting of low molecular weight hindered amine light stabilizer, (d) at least one compound selected from the group consisting of high molecular weight hindered amine light stabilizer, (e) at least one pigment and (f) optionally carbon black, wherein the expanded polymer foam shows a Δ E color change under xenon weathering over a period of 3000 hours of less than about 3.0.
    • 本发明涉及用于室外应用或需要高耐候性的应用的耐候性着色挤出聚苯乙烯模制或挤出泡沫制品。 耐候性着色的聚苯乙烯组合物可以通过挤出或模制(a)泡沫聚苯乙烯均聚物或共聚物(b),至少一种选自光吸收剂的化合物,(c)至少一种选自低聚物 分子量受阻胺光稳定剂,(d)至少一种选自高分子量受阻胺光稳定剂,(e)至少一种颜料和(f)任选的炭黑)的化合物,其中发泡聚合物泡沫体显示出 氙气风化下的Delta E颜色变化在3000小时以内,小于约3.0。
    • 38. 发明授权
    • Carbon dioxide blown polyurethane packaging foam with chemical
nucleating agents
    • 二氧化碳吹塑聚氨酯包装泡沫与化学成核剂
    • US5227408A
    • 1993-07-13
    • US712876
    • 1991-06-11
    • Todd A. HannaDavid L. HaleyStuart L. Watson
    • Todd A. HannaDavid L. HaleyStuart L. Watson
    • C08G18/08C08J9/00
    • C08J9/0023C08G18/08C08J9/0014C08G2101/0083C08J2375/04Y10S521/908
    • A method of preparing polyurethane packaging foam for dispensing into a container in which an article is present to be packaged for shipping, wherein the temperature of the polyurethane foam being dispensed into the container is reduced, as is the maximum reaction exotherm temperature. The method involves reacting polymeric isocyanate and polyoxyalkylated polyol precursors in the presence of water as the blowing agent for the foam. A nucleating agent is present in at least one of the precursors and is present in an amount sufficient to reduce the dispensing temperature of the foam reaction product but also the exotherm as the reaction continues to completion. Incorporation of a nucleating agent into the isocyanate and polyol resin components results in a carbon dioxide blown polyurethane packaging foam preferably having a density of 0.2 lb./ft..sup.3 to 2.0 lb./ft..sup.3.
    • 一种制备聚氨酯包装泡沫的方法,用于分配到容器中,其中存在用于运输的包装的制品,其中分配到容器中的聚氨酯泡沫的温度如最大反应放热温度那样降低。 该方法包括在水存在下使聚合异氰酸酯和聚氧烷基化多元醇前体作为泡沫的发泡剂。 成核剂存在于至少一种前体中,并且以足以降低泡沫反应产物的分配温度的量存在,而且反应持续完成时也存在放热。 将成核剂加入到异氰酸酯和多元醇树脂组分中导致二氧化碳吹塑的聚氨酯包装泡沫,其密度优选为0.2磅/英尺3至2.0磅/英尺3。