Open heated box trays having flow-promoting devices
    1.
    发明授权
    Open heated box trays having flow-promoting devices 失效
    具有流动促进装置的开放式加热箱托盘

    公开(公告)号:US4389226A

    公开(公告)日:1983-06-21

    申请号:US316646

    申请日:1981-10-30

    摘要: A flow-promoting device in combination with a heated box tray open at the top in a reaction and degasification column in which a viscous or highly viscous liquid is flowing from an inlet end to an outlet end of the tray and in which a heating tube register is located to be completely covered by the liquid. The tube register includes a plurality of heating tubes spaced from each other, and the flow-promoting device has a bottom heating unit for the box tray positioned outside and along the bottom of the tray, a siphon plate mounted on the tray at a liquid inlet end of the tray and closely in front of the tube register, with the siphon plate having a bottom end extending to the underside of the tube register, and a weir positioned at the liquid outlet end of the box tray. The weir has a top edge extending at least to the topside of the tube register, and the spacing of the weir from the tube register is larger than the spacing of the siphon plate at the inlet end from the tube register.

    摘要翻译: 一种流动促进装置与在反应和脱气塔顶部开放的加热盒托盘组合,其中粘性或高粘稠液体从托盘的入口端流出到出口端,并且其中加热管对准 位于被液体完全覆盖。 所述管对准装置包括彼此间隔开的多个加热管,并且所述流动促进装置具有用于位于所述托盘的外部和底部的盒托的底部加热单元,在所述托盘上安装有液体入口的虹吸板 托盘的端部并且紧密地在管对准器的前面,虹吸板具有延伸到管对准器的下侧的底端,以及位于盒托盘的液体出口端处的堰。 堰具有至少延伸到管子寄存器顶部的顶部边缘,并且堰与管子寄存器的间隔大于入口端与管子寄存器之间的虹吸板的间隔。

    Process for the production of cyclic diesters of dodecanedioic acid
    3.
    发明授权
    Process for the production of cyclic diesters of dodecanedioic acid 失效
    过氧化氢循环过程的生产工艺

    公开(公告)号:US4105672A

    公开(公告)日:1978-08-08

    申请号:US734013

    申请日:1976-10-19

    CPC分类号: C07D321/00

    摘要: Cyclic esters of dodecanedioic acid with aliphatic diols of 2-12 carbon atoms in the chain and substituted by up to two alkyl of 1-4 carbon atoms, are produced by thermolysis of corresponding linear polyesters under reduced pressure in the presence of catalysts by subjecting the linear polyesters to thermolysis at temperatures between 200.degree. and 300.degree. C., and by utilizing as catalyst a tin(II) salt of an aliphatic monocarboxylic acid of up to 18 carbon atoms, of an aromatic or araliphatic monocarboxylic acid of up to 36 carbon atoms, of an aliphatic or aromatic hydroxy-, poly-, ketocarboxylic acid or of a dicarboxylic acid of up to 18 carbon atoms; or a mixture of an organotin compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl of 1-18 carbon atoms, or aryl or aralkyl of 6-36 carbon atoms, and an O,O-dialkyl-(3,5-di-tert.-butyl-4-hydroxybenzyl)-phosphonate wherein each alkyl is of 2-18 carbon atoms.

    Method for preparing low pilling effect polyester fiber products
    5.
    发明授权
    Method for preparing low pilling effect polyester fiber products 失效
    低起球效应聚酯纤维制品的制备方法

    公开(公告)号:US3953405A

    公开(公告)日:1976-04-27

    申请号:US495074

    申请日:1974-08-05

    IPC分类号: D01F11/08 D06M10/00 C08G63/12

    CPC分类号: D06M10/001

    摘要: An improvement in the process of melt spinning ethylene terephthalate polyester to produce textile fibers with decreased pilling in the threads, fibers or fabrics made therefrom. The ethylene terephthalate is melt polymerized in the presence of a condensation catalyst to a final temperature of about 250.degree.C - 300.degree.C and a final pressure of less than 10 mm mercury to form an anhydrous melt. A substituted cyclobutanedecarboxylic acid, preferably .alpha.-truxillic acid, is added to the melt-polymerization at a concentration of about 0.05-5 molepercent of the acid component. Melt spinning of the modified polyester is carried out and the fibers are irradiated with high energy light.

    摘要翻译: 熔融纺丝对苯二甲酸乙二醇酯聚酯以生产纺织纤维的方法的改进,其中由其制成的纱线,纤维或织物的起球降低。 对苯二甲酸乙二醇酯在缩合催化剂存在下熔融聚合至最终温度约250-300℃,最终压力小于10毫米汞柱,形成无水熔体。 以约0.05-5摩尔酸组分的浓度将取代的环丁烷二羧酸,优选α-三水杨酸加入到熔融聚合中。 进行改性聚酯的熔融纺丝,用高能量的光照射纤维。

    Process for the production of cyclic diesters of dodecanedioic acid
    6.
    发明授权
    Process for the production of cyclic diesters of dodecanedioic acid 失效
    十二烷二酸的环状二酯的制备方法

    公开(公告)号:US4157330A

    公开(公告)日:1979-06-05

    申请号:US867566

    申请日:1978-01-06

    IPC分类号: C07D321/00

    CPC分类号: C07D321/00

    摘要: Cyclic esters of dodecanedioic acid with aliphatic diols of 2-12 carbon atoms in the chain and substituted by up to two alkyl of 1-4 carbon atoms, are produced by thermolysis of corresponding linear polyesters under reduced pressure in the presence of catalysts by subjecting the linear polyesters to thermolysis at temperatures between 200.degree. and 300.degree. C., and by utilizing as catalyst a tin(II) salt of an aliphatic monocarboxylic acid of up to 18 carbon atoms, of an aromatic or araliphatic monocarboxylic acid of up to 36 carbon atoms, of an aliphatic or aromatic hydroxy-, poly-, ketocarboxylic acid or of a dicarboxylic acid of up to 18 carbon atoms; or a mixture of an organotin compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl of 1-18 carbon atoms, or aryl or aralkyl of 6-36 carbon atoms, and an O,O-dialkyl-(3,5-di-tert.-butyl-4-hydroxybenzyl)-phosphonate wherein each alkyl is of 2-18 carbon atoms.

    摘要翻译: 通过在催化剂存在下,通过在减压下热解相应的线型聚酯,在链中存在十二烷二酸与链中2-12个碳原子的脂肪族二醇并被至多两个1-4个碳原子的烷基取代的环酯, 线性聚酯在200-300℃的温度下进行热分解,并且通过使用至多36个碳原子的芳族或芳脂族单羧酸的至多18个碳原子的脂族单羧酸的锡(II)盐作为催化剂, 脂族或芳族羟基,聚 - ,酮羧酸或至多18个碳原子的二羧酸的原子; 或其中R 1和R 2为1-18个碳原子的烷基或6-36个碳原子的芳基或芳烷基的式(ⅩⅧ)的有机锡化合物和O,O-二烷基 - (3,5- 二叔丁基-4-羟基苄基) - 膦酸酯,其中每个烷基具有2-18个碳原子。

    Low pilling polyester fibers and process for their manufacture
    7.
    发明授权
    Low pilling polyester fibers and process for their manufacture 失效
    低起绒聚酯纤维及其制造方法

    公开(公告)号:US4104261A

    公开(公告)日:1978-08-01

    申请号:US760924

    申请日:1977-01-21

    摘要: An improvement in the process of melt spinning ethylene terephthalate polyester to produce textile fibers with decreased pilling in the threads, fibers or fabrics made therefrom. The ethylene terephthalate is melt polymerized in the presence of a condensation catalyst to a final temperature of about 250.degree.-300.degree. C and a final pressure of less than 10 mm mercury to form an anhydrous melt. A vinyl copolymer having more than two carboxyl and/or hydroxyl groups is added to the melt polymerization at a concentration of about 0.005 to 2.0 percent referred to the dicarboxylic acid component. Melt spinning of the modified polyester is then carried out. The vinyl copolymer has the following general formula- ##STR1## where N IS AN INTEGER FROM 10 TO 10,000;a is zero or an integer from 1 to 100;b is an integer from 1 to 100;R.sup.1 through R.sup.6 are hydrogen, an alkyl group with 1 to 3 carbon atoms or an oxalkyl group -OR.sup.7 ;R.sup.7 is an alkyl group with 1 to 6 carbon atoms or an aryl group with 6 to 10 carbon atoms;X.sub.1 is hydrogen, an alkyl group with 1 to 3 carbon atoms, or a carboxyl group, an esterified carboxyl group; andX.sub.2 is a carboxyl group, a hydroxyl group, an esterified carboxyl group or an esterified hydroxyl group.

    摘要翻译: 熔融纺丝对苯二甲酸乙二醇酯聚酯以生产纺织纤维的方法的改进,其中由其制成的纱线,纤维或织物的起球降低。 对苯二甲酸乙二醇酯在缩合催化剂存在下熔融聚合至最终温度约250-300℃,最终压力小于10毫米汞柱以形成无水熔体。 将具有多于两个羧基和/或羟基的乙烯基共聚物以涉及二羧酸组分的约0.005-2.0%的浓度加入到熔融聚合中。 然后进行改性聚酯的熔融纺丝。 乙烯基共聚物具有以下通式 - 其中N为10至10,000的整数; A为零或整数从1到100; B是从1到100的整数; R 1至R 6为氢,具有1至3个碳原子的烷基或氧代烷基-OR 7; R7是碳原子数1〜6的烷基或碳原子数6〜10的芳基。 X1是氢,具有1至3个碳原子的烷基或羧基,酯化的羧基; X2为羧基,羟基,酯化羧基或酯化羟基。