Process for the preparation of compounds containing hydroxyl groups and
their use in the production of polyurethane resins
    2.
    发明授权
    Process for the preparation of compounds containing hydroxyl groups and their use in the production of polyurethane resins 失效
    制备含羟基化合物的方法及其在聚氨酯树脂生产中的应用

    公开(公告)号:US5338763A

    公开(公告)日:1994-08-16

    申请号:US986167

    申请日:1992-12-04

    摘要: Compounds containing alcoholic hydroxyl groups suitable as a starting material for the isocyanate polyaddition process by the alcoholysis of polyisocyanate polyaddition products are produced. Polyurethane urea or polyurea waste products having a molar ratio of urea groups to urethane groups of from 1:20 to 1:0 are heated in size reduced form to temperatures of from 120.degree. to 250.degree. C. together with B) polyhyhdric alcohols in the molecular weight range of from 62 to 250 in a ratio by weight of A:B of from 3:1 to 1:10. At least 10% of the polyhydric alcohol B put into the process is subsequently removed by distillation under reduced pressure. A total of up to 1000% by weight, based on the weight of polyurethane urea or polyurea waste A, of one or more polyhydroxy compounds having a molecular weight above 250 which is (are) not volatile under the distillation conditions may optionally be added to the mixture before and/or after removal of the excess alcohol B by distillation. The resulting compounds containing hydroxyl groups may be used as starting material for the production of polyurethane resins by the isocyanate polyaddition process.

    摘要翻译: 制备含有醇羟基的化合物,其通过多异氰酸酯加聚产物的醇解作为异氰酸酯加成反应过程的起始原料。 将尿素基团与氨基甲酸酯基摩尔比为1:20至1:0的聚氨酯脲或聚脲废物与尺寸减小的形式一起加热至120℃至250℃的温度,以及B)中的多元醇 分子量范围为62-250,A:B的重量比为3:1至1:10。 随后通过减压蒸馏除去至少10%的多元醇B投入该方法。 基于聚氨酯脲或聚脲废物A的重量,总计高达1000重量%的一种或多种分子量高于250的多羟基化合物(其在蒸馏条件下是不挥发的)可以任选地加入到 通过蒸馏除去过量的醇B之前和/或之后的混合物。 所得到的含羟基的化合物可以用作通过异氰酸酯加聚方法生产聚氨酯树脂的原料。

    Apparatus for transporting, treating and storing articles
    4.
    发明授权
    Apparatus for transporting, treating and storing articles 失效
    用于运输,处理和储存物品的装置

    公开(公告)号:US4077245A

    公开(公告)日:1978-03-07

    申请号:US711079

    申请日:1976-08-02

    摘要: A production line wherein extremely heavy and bulky commodities, such as metallic bands which are convoluted on reels and weigh up to and in excess of 20,000 lbs., are treated at several stations is provided with a first magazine at the receiving end, a second magazine at the discharge end and an intermediate magazine between two neighboring departments. The commodities are transported in the magazines by vehicles which are movable lengthwise as well as up and down to store the commodities at different levels or to withdraw commodities from selected compartments of the respective magazines. Additional vehicles in the form of cars, lifters, cranes or the like are provided to transport commodities from a preceding magazine, to stations which are adjacent to various machines of the production line, and from such machines to the next magazine, always at a level above or below the level of the production line. The production line may be set up to anneal the commodities which are withdrawn from the first magazine prior to introduction into the first magazine, to thereupon roll the commodities in one or more passes, to trim the commodities, to subdivide the commodities, and to heat the commodities prior to storage in the second magazine from which the commodities are withdrawn for transport to inspecting, packing and/or other stations.

    摘要翻译: 一种生产线,其中非常重和笨重的商品,例如在卷轴上卷绕并称重超过20,000磅的金属带,在几个台处理,在接收端设有第一盒,第二个杂志 在排放端和两个相邻部门之间的中间杂志。 这些商品是通过可移动长度方向上下移动的商品在不同级别上存储的商品,也可以从相应杂志的选定区域中提取商品。 提供汽车,升降机,起重机等形式的其他车辆将商品从前一个仓库运送到与生产线各种机器相邻的站点,并且从这些机器到下一个杂志,总是处于一个级别 高于或低于生产线的水平。 生产线可以设置为在引入第一杂志之前对从第一杂志退出的商品进行退火,从而在一次或多次通行中滚动商品,修剪商品,细分商品并加热 储存在第二杂志中的商品,从商品中取出商品运回到检验,包装和/或其他站。

    Apparatus for transporting and storing heavy commodities
    6.
    发明授权
    Apparatus for transporting and storing heavy commodities 失效
    运输和储存重商品的设备

    公开(公告)号:US3993201A

    公开(公告)日:1976-11-23

    申请号:US399182

    申请日:1973-09-20

    摘要: A production line wherein extremely heavy and bulky commodities, such as metallic bands which are convoluted on reels and weigh up to and in excess of 20,000 lbs., are treated at several stations is provided with a first magazine at the receiving end, a second magazine at the discharge end and an intermediate magazine between two neighboring departments. The commodities are transported in the magazines by vehicles which are movable lengthwise as well as up and down to store the commodities at different levels or to withdraw commodities from selected compartments of the respective magazines. Additional vehicles in the form of cars, lifters, cranes or the like are provided to transport commodities from a preceding magazine, to stations which are adjacent to various machines of the production line, and from such machines to the next magazine, always at a level above or below the level of the production line. The production line may be set up to anneal the commodities which are withdrawn from the first magazine prior to introduction into the first magazine, to thereupon roll the commodities in one or more passes, to trim the commodities, to subdivide the commodities, and to heat the commodities prior to storage in the second magazine from which the commodities are withdrawn for transport to inspecting, packing and/or other stations.

    摘要翻译: 一种生产线,其中非常重和笨重的商品,例如在卷轴上卷绕并称重超过20,000磅的金属带,在几个台处理,在接收端设有第一盒,第二个杂志 在排放端和两个相邻部门之间的中间杂志。 这些商品是通过可移动长度方向上下移动的商品在不同级别上存储的商品,也可以从相应杂志的选定区域中提取商品。 提供汽车,升降机,起重机等形式的其他车辆将商品从前一个仓库运送到与生产线各种机器相邻的站点,并且从这些机器到下一个杂志,总是处于一个级别 高于或低于生产线的水平。 生产线可以设置为在引入第一杂志之前对从第一杂志退出的商品进行退火,从而在一次或多次通行中卷起商品,修剪商品,细分商品并加热 储存在第二杂志中的商品,从商品中取出商品运回到检验,包装和/或其他站。