Stabilized poly(alkylene terephthalate) molding materials
    1.
    发明授权
    Stabilized poly(alkylene terephthalate) molding materials 失效
    稳定的聚(对苯二甲酸亚烷基酯)成型材料

    公开(公告)号:US4229553A

    公开(公告)日:1980-10-21

    申请号:US057130

    申请日:1979-07-12

    IPC分类号: C08L67/00 C08L67/02 C08L63/00

    CPC分类号: C08L67/02

    摘要: Poly(alkylene terephthalate) molding materials which contain, as the stabilizer, a diepoxide of molecular weight from 200 to 2,000, and a catalyst which is an alkali metal salt of a chelating agent possessing one or more --N(CH.sub.2 --COO.sup.-).sub.2 groups in the molecule. Preferred catalysts are trisodium nitrilotriacetate and tetrasodium ethylenediaminetetraacetate. The molding materials may be used for the manufacture of moldings, films, monofilaments and fibers.

    摘要翻译: 含有分子量为200〜2000的二环氧化物作为稳定剂的聚(对苯二甲酸亚烷基酯)成型材料和具有一个或多个-N(CH 2 -CO 2)2的螯合剂的碱金属盐的催化剂 分子中的基团。 优选的催化剂是次氮基三乙酸三钠和乙二胺四乙酸四钠。 成型材料可用于制造模制品,薄膜,单丝和纤维。

    Preparation of linear high molecular weight saturated polyesters
    2.
    发明授权
    Preparation of linear high molecular weight saturated polyesters 失效
    线性高分子量饱和聚酯的制备

    公开(公告)号:US4248996A

    公开(公告)日:1981-02-03

    申请号:US15785

    申请日:1979-02-28

    IPC分类号: C08G63/00 C08G63/78 C08G63/22

    CPC分类号: C08G63/78

    摘要: A process for the preparation of high molecular weight linear saturated polyesters derived from dicarboxylic acids or their ester-forming derivatives and aliphatic and/or cycloaliphatic diols, comprising the condensation of polyester precondensates having a relative viscosity of from 1.05 to 1.15 at from 220.degree. to 280.degree. C. under reduced pressure, wherein(a) the condensation is first started with from 70 to 95 percent by weight of the polyester precondensate and(b) after from 10 to 50% of the total condensation time the remaining 5 to 30 percent by weight of the polyester precondensate are added to the polyester melt undergoing condensation in accordance with (a), and the condensation is taken to completion.

    摘要翻译: 一种制备衍生自二羧酸或其酯形成衍生物和脂族和/或脂环族二醇的高分子量线性饱和聚酯的方法,其包括在220℃下相对粘度为1.05至1.15的聚酯预缩合物的缩合, 280℃,其中(a)首先以70至95重量%的聚酯预缩合物开始缩合,和(b)在总冷凝时间的10至50%之后,剩余的5至30重量% 加入到根据(a)进行缩合的聚酯熔融物中,并进行冷凝。

    Preparation of amide-containing polyethers
    3.
    发明授权
    Preparation of amide-containing polyethers 失效
    含酰胺聚醚的制备

    公开(公告)号:US4324881A

    公开(公告)日:1982-04-13

    申请号:US185606

    申请日:1980-09-09

    IPC分类号: C08J11/10 C08G65/40

    摘要: A process for the preparation of an amide-containing polyether comprises polycondensing a dihalobenzene compound, preferably bis-(4-chlorophenyl) sulfone or 4,4'-bis-(4"-chlorobenzoyl)-diphenyl ether, with an amide-containing bis-phenol of the formula HO-Ar.sup.1 -NHCO-Ar.sup.2 -CONH-Ar.sup.1 -OH where Ar.sup.1 is an aromatic radical of 6 to 12 carbon atoms and Ar.sup.2 is an aromatic radical of 6 to 12 carbon atoms or has the formula II ##STR1## where A.sup.1 is --SO.sub.2 --, --CO--, --C(CH.sub.3).sub.2 -- or 0 and n is 0 or 1, preferably 1,4-bis(4-hydroxybenzamido)-benzene, in the presence of an anhydrous alkali metal carbonate, and optionally in the presence of a bisphenol of the formula III ##STR2## where Ar.sup.1 and A.sup.1 have the above meanings and n and m are 0 or 1. The polyethers may be used to produce moldings, fibers, films, adhesives and coating materials.

    摘要翻译: 制备含酰胺的聚醚的方法包括将二卤代苯化合物,优选双(4-氯苯基)砜或4,4'-双 - (4“ - 氯苯甲酰基) - 二苯醚与含酰胺的 式HO-Ar1-NHCO-Ar2-CONH-Ar1-OH的双酚,其中Ar1是6至12个碳原子的芳族基团,Ar2是6-12个碳原子的芳族基团,或具有式II 其中A 1是-SO 2 - , - CO - , - C(CH 3)2 - 或0,n是0或1,优选1,4-双(4-羟基苯甲酰氨基) - 苯,在无水碱金属 碳酸酯,并且任选地在式III的双酚存在下,其中Ar1和A1具有上述含义,n和m为0或1.聚醚可用于生产模制品,纤维,膜,粘合剂和涂料 材料

    Reinforced polyoxymethylene molding compositions
    4.
    发明授权
    Reinforced polyoxymethylene molding compositions 失效
    增强聚甲醛成型组合物

    公开(公告)号:US3963668A

    公开(公告)日:1976-06-15

    申请号:US549660

    申请日:1975-02-13

    摘要: Thermoplastic molding compositions of polyoxymethylenes and glass fibers and containing from 0.1 to 5.0 per cent, by weight of the total weight of the mixture, of alkoxymethyl ureas having the formula ##EQU1## where R.sup.1 and R.sup.2 are the same or different and denote straight-chain or branched-chain alkyl of from 1 to 10 carbon atoms and R.sup.3 and R.sup.4 denote hydrogen or alkyl, or R.sup.3 and R.sup.4 are joined together to form a heterocyclic ring with the adjacent ureido group.

    摘要翻译: 聚氧亚烷基和玻璃纤维的热塑性模塑组合物,其含量为混合物总重量的0.1-5.0%,具有式R1OCH2-N-CO-N-CH2OR2 || R3R4的烷氧基甲基脲,其中R 1和R 2为 相同或不同,表示1〜10个碳原子的直链或支链烷基,R3和R4表示氢或烷基,或R3和R4连接在一起形成与相邻脲基的杂环。

    METHOD FOR AERATING AND DEAERATING AN OVEN, AND AN OVEN
    7.
    发明申请
    METHOD FOR AERATING AND DEAERATING AN OVEN, AND AN OVEN 失效
    用于加热和加热烤箱和烤箱的方法

    公开(公告)号:US20130186386A1

    公开(公告)日:2013-07-25

    申请号:US13634010

    申请日:2011-03-30

    IPC分类号: F24C15/00

    CPC分类号: F24C15/006

    摘要: The present invention relates to a method for aerating and deaerating an oven (1), which has at least two oven muffles (2, 3) disposed one above the other, the feed apertures (5, 6) of which are or can be closed in each case by a door (7, 8), comprising the following procedural steps: cooling air (L) is drawn off from an outside area surrounding the oven (1), and the drawn-off air (L) is blown at least partially into interior spaces (9, 10) of the doors (7, 8) and then blown out into the outside area after flowing through at least a part of the interior spaces (9, 10), wherein the drawn-off air (L) is blown into the upper door (7) in an upper section of that door (7) and flows substantially downward from above through the interior space (9) of the door (7), wherein the drawn-off air (L) is blown into the interior space (10) of the lower door (8) at a bottom end section thereof and flows substantially upward through the interior space (10) of the door (8), and that the air blown into the interior spaces (9, 10) of the two doors (7, 8) is blown out to the outside area after flowing through the interior spaces (9, 10) of the doors (7, 8) in the lower section of the upper door (7) and the upper section of the lower door (8).

    摘要翻译: 本发明涉及一种用于对烤箱(1)进行通气和脱气的方法,所述烘箱具有至少两个彼此上下设置的烘箱马弗炉(2,3),其供给孔(5,6)是或可以封闭的 在每种情况下都由门(7,8)组成,包括以下程序步骤:冷却空气(L)从烘箱(1)周围的外部区域抽出,排出的空气(L)至少吹出 部分地进入门(7,8)的内部空间(9,10)中,然后在流过至少一部分内部空间(9,10)之后吹出外部区域,其中排出的空气(L )在该门(7)的上部被吹入上门(7),并且从上方大致向下流过门(7)的内部空间(9),其中排出的空气(L)是 在其下端部吹入下门(8)的内部空间(10),并且大致向上流过门(8)的内部空间(10),并且吹入 两个门(7,8)的内部空间(9,10)在流过上部的下部的门(7,8)的内部空间(9,10)之后被吹出到外部区域 门(7)和下门(8)的上部。

    Continuous preparation of copolyamides from caprolactam and salt of
diamine and dicarboxylic acid
    8.
    发明授权
    Continuous preparation of copolyamides from caprolactam and salt of diamine and dicarboxylic acid 失效
    从己内酰胺和二胺和二羧酸的盐连续制备共聚酰胺

    公开(公告)号:US5039786A

    公开(公告)日:1991-08-13

    申请号:US500946

    申请日:1990-03-29

    IPC分类号: C08G69/36

    CPC分类号: C08G69/36

    摘要: Copolyamides are prepared by a continuous process in which(a) an aqueous solution of salts of equimolar amounts of diamines and dicarboxylic acids is passed, under superatmospheric pressure and with simultaneous evaporation of water, through a tubular precondensation zone with formation of a vapor phase and a prepolymer at above the melting point of the prepolymer,(b) the vapor phase is separated from the prepolymer melt,(c) the vapor phase is separated in a column into steam and an aqueous diamine solution, and the aqueous solution containing diamines is recycled to the polymerization,(d) the prepolymer melt is mixed with molten caprolactam at polyamide-forming temperatures, and(e) the mixture of prepolymer and caprolactam is passed downward through a vertical polymerization tube at polyamide-forming temperatures and a copolyamide is obtained.

    摘要翻译: 共聚酰胺通过连续方法制备,其中(a)等摩尔量的二胺和二羧酸的盐的水溶液在超大气压下通过管状预缩合区,同时蒸发水,并形成气相, 在预聚物熔点以上的预聚物,(b)将气相与预聚物熔体分离,(c)气相在塔中分离为蒸汽和二胺水溶液,含有二胺的水溶液为 再循环到聚合反应中,(d)预聚物熔体与聚酰胺形成温度下的熔融己内酰胺混合,(e)预聚物和己内酰胺的混合物在聚酰胺形成温度下向下通过垂直聚合管,得到共聚酰胺 。

    Method for aerating and deaerating an oven, and an oven
    9.
    发明授权
    Method for aerating and deaerating an oven, and an oven 失效
    烤箱和烤箱通风和除气的方法

    公开(公告)号:US08746230B2

    公开(公告)日:2014-06-10

    申请号:US13634010

    申请日:2011-03-30

    IPC分类号: F24C15/00

    CPC分类号: F24C15/006

    摘要: The present invention relates to a method for aerating and deaerating an oven (1), which has at least two oven muffles (2, 3) disposed one above the other, the feed apertures (5, 6) of which are or can be closed in each case by a door (7, 8), comprising the following procedural steps: cooling air (L) is drawn off from an outside area surrounding the oven (1), and the drawn-off air (L) is blown at least partially into interior spaces (9, 10) of the doors (7, 8) and then blown out into the outside area after flowing through at least a part of the interior spaces (9, 10), wherein the drawn-off air (L) is blown into the upper door (7) in an upper section of that door (7) and flows substantially downward from above through the interior space (9) of the door (7), wherein the drawn-off air (L) is blown into the interior space (10) of the lower door (8) at a bottom end section thereof and flows substantially upward through the interior space (10) of the door (8), and that the air blown into the interior spaces (9, 10) of the two doors (7, 8) is blown out to the outside area after flowing through the interior spaces (9, 10) of the doors (7, 8) in the lower section of the upper door (7) and the upper section of the lower door (8).

    摘要翻译: 本发明涉及一种用于对烤箱(1)进行通气和脱气的方法,所述烘箱具有至少两个彼此上下设置的烘箱马弗炉(2,3),其供给孔(5,6)是或可以封闭的 在每种情况下都由门(7,8)组成,包括以下程序步骤:冷却空气(L)从烘箱(1)周围的外部区域抽出,排出的空气(L)至少吹出 部分地进入门(7,8)的内部空间(9,10)中,然后在流过至少一部分内部空间(9,10)之后吹出外部区域,其中排出的空气(L )在该门(7)的上部被吹入上门(7),并且从上方大致向下流过门(7)的内部空间(9),其中排出的空气(L)是 在其下端部吹入下门(8)的内部空间(10),并且大致向上流过门(8)的内部空间(10),并且吹入 两个门(7,8)的内部空间(9,10)在流过上部的下部的门(7,8)的内部空间(9,10)之后被吹出到外部区域 门(7)和下门(8)的上部。

    Continuous preparation of nylon from aqueous salt solution in
precondensation zone having baffles
    10.
    发明授权
    Continuous preparation of nylon from aqueous salt solution in precondensation zone having baffles 失效
    从具有挡板的预缩合区域的盐水溶液中连续制备尼龙

    公开(公告)号:US4540772A

    公开(公告)日:1985-09-10

    申请号:US620837

    申请日:1984-06-15

    CPC分类号: C08G69/28

    摘要: Nylons are prepared by a continuous process in which, in a precondensation zone, an aqueous solution of a salt of a dicarboxylic acid of 6 to 18 carbon atoms and a diamine of 6 to 18 carbon atoms is heated to 250.degree.-300.degree. C. under superatmospheric pressure, with simultaneous vaporization of water and formation of a prepolymer, the prepolymer and the vapor are separated, and the former is fed into a polycondensation zone and condensed under superatmospheric pressure of from 1 to 10 bar and at from 250.degree. to 300.degree. C., wherein the aqueous salt solution is condensed under superatomspheric pressure of from 1 to 10 bar in the first third of the tubular precondensation zone provided with baffles, until the degree of conversion is not less than 93%, and the prepolymer and the vapor phase are brought into intimate contact with one another in the remaining two thirds of the precondensation zone.

    摘要翻译: 尼龙通过连续方法制备,其中在预缩合区中将6至18个碳原子的二羧酸盐和6至18个碳原子的二胺的水溶液加热至250-300℃。 在超大气压下,同时蒸发水和形成预聚物,将预聚物和蒸气分离,将前者加入缩聚区,并在1至10巴和250至300的超大气压下冷凝 ℃,其中盐水溶液在具有挡板的管状预缩合区的第一三分之一中在1至10巴的超大体压力下冷凝,直到转化率不低于93%,并且预聚物和 气相在预缩合区的剩余三分之二处彼此紧密接触。