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
    • 7. 发明授权
    • Process for recovering terephthalic acid from pulverized product of spent polyethylene terephthalate and system for use in such process
    • 从废聚对苯二甲酸乙二醇酯的粉碎产物中回收对苯二甲酸的方法和用于该方法的体系
    • US07173150B2
    • 2007-02-06
    • US10424042
    • 2003-04-24
    • Jinichi YazakiKozaburo SakanoNobuyuki FunakoshiKazuho Tanaka
    • Jinichi YazakiKozaburo SakanoNobuyuki FunakoshiKazuho Tanaka
    • C07C51/09
    • C07C51/43C07C51/09C07C51/412C07C51/47C08J11/24C08J2367/02Y02W30/706C07C63/28C07C63/26
    • This invention provides a process a process for recovering terephthalic acid from pulverized products of spent polyethylene terephthalate. This process comprises (1) a decomposition reaction step where the pulverized products of spent polyethylene terephthalate are continuously subjected to decomposition reaction in ethylene glycol in the presence of alkali, which is equimolar or excessmolar relative to the polyethylene terephthalate, so that salt of terephthalic acid and ethylene glycol can be continuously obtained; (2) a solid-liquid separation, dissolution, impurities-removing step where the ethylene glycol is separated from decomposition reaction slurry of salt of terephthalic acid and ethylene glycol, and the solid salt of terephthalic acid is dissolved into water, while insoluble impurities are removed; (3) a neutralization, crystallization step, where solution of said salt of terephthalic acid is neutralized with acid so that terephthalic acid can be crystallized; (4) a solid-liquid separation, washing stop where slurry of terephthalic acid crystals is subjected to solid-liquid separation so that the terephthalic acid crystals can be obtained and washed; and (5) a drying, pulverization step where the washed terephthalic acid crystals are dried and pulverized.
    • 本发明提供一种从废聚对苯二甲酸乙二醇酯的粉碎产物中回收对苯二甲酸的方法。 该方法包括:(1)分解反应步骤,其中废聚对苯二甲酸乙二醇酯的粉碎产物在相对于聚对苯二甲酸乙二醇酯等摩尔或过量的碱的存在下在乙二醇中连续进行分解反应,使得对苯二甲酸的盐 可连续获得乙二醇; (2)从对苯二甲酸和乙二醇盐的分解反应浆液中分离出乙二醇和对苯二甲酸的固体盐的固液分离,溶解,杂质去除步骤溶解在水中,不溶性杂质为 删除 (3)中和,结晶步骤,其中所述对苯二甲酸盐的溶液用酸中和,使对苯二甲酸可以结晶; (4)固液分离,其中对苯二甲酸晶体的浆液进行固液分离以使得可以获得和洗涤对苯二甲酸晶体的洗涤停止; 和(5)干燥,粉碎步骤,其中将洗涤的对苯二甲酸晶体干燥并粉碎。
    • 10. 发明授权
    • Multi-layer drawn plastic vessel
    • 多层拉伸塑料容器
    • US4511610A
    • 1985-04-16
    • US536846
    • 1983-09-29
    • Jinichi YazakiKozaburo Sakano
    • Jinichi YazakiKozaburo Sakano
    • B32B27/32B65D65/40B65D85/00B32B27/08
    • B32B27/322B32B27/32Y10S428/91Y10T428/1379Y10T428/1383Y10T428/31913
    • Disclosed is a multi-layer drawn plastic vessel comprising at least one layer composed mainly of at least one crystalline olefin resin selected from crystalline polypropylene and crystalline propylene/ethylene copolymers having an ethylene content of 1 to 20 mole %, at least one oxygen-barrier layer composed mainly of an ethylene/vinyl alcohol copolymer having an ethylene content of 25 to 60 mole %, and an adhesive resin layer interposed between said two resin layers, said adhesive resin layer containing an acid- or acid anhydride-modified, linear, low-density polyethylene or a mixture of said polyethylene with an acid- or acid anhydride-modified propylene resin and said crystalline olefin resin layer being molecularly oriented in at least one direction.
    • 公开了一种多层拉伸塑料容器,其包含至少一层主要由至少一种选自结晶聚丙烯的结晶烯烃树脂和乙烯含量为1至20摩尔%的结晶丙烯/乙烯共聚物组成的层,至少一个氧阻隔层 主要由乙烯含量为25〜60摩尔%的乙烯/乙烯醇共聚物组成的层,以及插入在所述两个树脂层之间的粘合树脂层,所述粘合树脂层含有酸或酸酐改性的线性低 密度聚乙烯或所述聚乙烯与酸或酸酐改性丙烯树脂的混合物,所述结晶烯烃树脂层在至少一个方向上分子取向。