会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 61. 发明授权
    • Polyester compositions which crystallize rapidly
    • 快速结晶的聚酯组合物
    • US4223113A
    • 1980-09-16
    • US40387
    • 1979-05-18
    • Peter BierRudolf Binsack
    • Peter BierRudolf Binsack
    • C08K5/12C08L67/02C08G63/76
    • C08K5/12C08L67/02C08L67/025
    • Polyalkylene terephthalates containing 0.5-30% by weight of oligomeric carboxylic acid polyesters have a higher crystallization speed and thus allow lower mold temperatures and shorter injection cycles. The polyalkylene terephthalates generally have intrinsic viscosities in excess of about 0.4 dl/g in 1:1 phenol tetrachloroethane at 25.degree. C. and are at least about 90 mol % terephthalic acid based. The oligomer additive is based on carboxylic acids, with sebacic and adipic being preferred, and aliphatic, cycloaliphatic or araliphatic dihydric alcohols. This additive has a minimum polymerization degree of 2 and a maximum number-average molecular weight of about 6000.Faster crystallization rates can be imparted to polyalkylene terephthalates by mixing them with the ester additive and melt homogenizing the mixture.
    • 含有0.5-30%(重量)低聚羧酸聚酯的聚对苯二甲酸亚烷基酯具有较高的结晶速度,从而允许较低的模具温度和较短的注射循环。 聚对苯二甲酸亚烷基酯通常在25℃在1:1苯酚四氯乙烷中具有超过约0.4dl / g的特性粘度,并且是至少约90mol%对苯二甲酸。 低聚物添加剂基于羧酸,优选癸二酸和己二酸,脂肪族,脂环族或芳脂族二元醇。 该添加剂的最小聚合度为2,最大数均分子量为约6000.通过将它们与酯添加剂混合并将混合物熔融均化,可以将聚对苯二甲酸亚烷基酯提供更快的结晶速率。