中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.012 seconds)

    Microporous sheet structures
    4.
    发明授权
    Microporous sheet structures 失效
    微晶片结构

    公开(公告)号：US3920588A

    公开(公告)日：1975-11-18

    申请号：US31404972

    申请日：1972-12-11

    Applicant: BAYER AG

    Inventor： TRAUBEL HARRO ,  KONIG KLAUS

    IPC: C08G18/08 ,  C08J9/14 ,  C08J9/28 ,  C08K5/00 ,  C08J9/06

    CPC classification number: C08J9/28 ,  C08G18/0842 ,  C08J2375/04 ,  C08K5/0008 ,  C08L75/04

    Abstract: Microporous sheet structures are provided and a method for their production which comprises reacting an organic polyisocyanate with an organic compound containing at least two hydroxyl or amino hydrogen atoms reactive with NCO groups as starting materials to produce a polyaddition product which in the homogeneous state exhibits a shore A hardness greater than 40 and a softening range above 100*C. The said reaction is effected in an organic liquid which dissolves the starting materials, does not dissolve the polyaddition product, boils below 250*C and contains 1 to 300 percent by weight, based on the polyaddition product to be formed, of a polar solvent which is inert to the starting materials. Said polar solvent has a greater evaporation number than the components of the aforesaid organic liquid (in the following called nonsolvent), the nonsolvent being such that while the polyaddition product forms, it gradually becomes increasingly insoluble in the mixture of polar solvent and nonsolvent. This mixture has no significant swelling effect upon the polyaddition product.

    Abstract translation: 提供了微孔片结构及其制备方法，其包括使有机多异氰酸酯与含有至少两个与NCO基团反应的羟基或氨基氢原子的有机化合物作为起始原料反应，以产生均相状态下呈现岸的加聚产物 硬度大于40，软化范围高于100℃。所述反应在溶解原料的有机液体中进行，不溶解加成产物，沸点低于250℃并含有1至300重量％ 基于待形成的加成产物，对起始原料是惰性的极性溶剂。 所述极性溶剂具有比上述有机液体的组分（以下称为非溶剂）更大的蒸发数量，非溶剂使得当加聚产物形成时，它逐渐变得越来越不溶于极性溶剂和非溶剂的混合物中。 该混合物对加聚产物没有明显的溶胀作用。

    Polyurethane microporous sheet structures and a process for the preparation thereof
    5.
    发明授权
    Polyurethane microporous sheet structures and a process for the preparation thereof 失效
    聚氨酯微晶片结构及其制备方法

    公开(公告)号：US3582396A

    公开(公告)日：1971-06-01

    申请号：US3582396D

    申请日：1968-07-31

    Applicant: BAYER AG

    Inventor： KONIG KLAUS ,  TRAUBEL HARRO ,  ZORN BRUNO ,  REISCHL ARTUR

    IPC: B32B27/00 ,  C08G18/08 ,  C08G18/65 ,  C08J9/28 ,  D06N3/14 ,  C08J1/14 ,  B32B3/00

    CPC classification number: C08J9/28 ,  B32B27/00 ,  C08G18/0842 ,  C08G18/65 ,  C08J2375/04 ,  D06N3/14

    Abstract: POLYURETHANE MICROPOROUS SHEETS ARE PREPARED BY REACTING AN ORGANIC COMPOUND CONTAINING AT LEAST TWO TERMINAL HYDROXYL GROUPS AND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO 10,000 AND A CHAIN LENGTHENING AGENT CONTAINING AT LEAST TWO HYDROXYL OR AMINO GROUPS AND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 50 TO ABOUT 600, THE REACTIVE GROUPS OF THIS EXTENDER BEING WITHIN A FACTOR OF 5 AS COMPARED TO THE REACTIVITY OF THE HYDROXYL GROUPS OF THE COMPOUND HAVING A MOLECULAR WEIGHT OF FROM 500 TO 10,000, AND AN ORGANIC POLYISOCYANATE IN AN AMOUNT SUCH THAT THE NCO TO OH OR THE NCO TO AMINO PLUS HYDROXYL RATIO IS FROM ABOUT 0.8 TO 2, THE REACTANTS FORMING A PRODUCT WHICH WHEN IN A HOMOGENEOUS STATE EXHIBITS A SHORE A HARDNESS OF AT LEAST 50 AND A TENSILE STRENGTH OF AT LEAST 50 KG./CM2, THE REACTION BEING CONDUCTED IN A 10 TO 80 PERCENT BY VOLUME SOLUTION AT A TEMPERATURE OF UP TO ABOUT 150* C., THE SOLVENT OR MIXTURE OF SOLVENTS OF THE SOLUTION EXHIBITING THE FOLLOWING CRITERIA:

    (A) DISSOLVES THE STARTING MATERIAL AT THE INITIAL REACTION TEMPERATURE, (B) DISSOLVES THE POLYURETHANE BEING FORMED LESS AND LESS READILY AS THE DEGREE IN POLYADDITION INCREASES AND FINALLY PERMITS THE POLYURETHANE TO GEL AFTER NOT MORE THAN 2O MINUTES UNDER THE REACTION CONDITIONS, (C) DOES NOT CAUSE SUBSTANTIAL SWELLING OF THE RESULTING POLYURETHANE, AND (D) HAS AN EVAPORATION NUMBER HIGH ENOUGH TO INSURE ITS PRESENCE IN SUFFICIENT QUANTITY UNDER THE REACTION CONDITIONS UNTIL THE FILM SOLIDIFIES.

    Process for the production of microporous sheet structures
    6.
    发明授权
    Process for the production of microporous sheet structures 失效
    生产微孔板结构的工艺

    公开(公告)号：US3681125A

    公开(公告)日：1972-08-01

    申请号：US3681125D

    申请日：1968-11-29

    Applicant: BAYER AG

    Inventor： TRAUBEL HARRO ,  KONIG KLAUS

    IPC: B32B27/00 ,  C08G18/08 ,  C08G18/65 ,  C08J9/28 ,  D06N3/14 ,  B32B3/00 ,  C08J1/14

    CPC classification number: C08J9/28 ,  B32B27/00 ,  C08G18/0842 ,  C08G18/65 ,  C08J2375/04 ,  D06N3/14

    Abstract: MICROPOROUS SHEET STRUCTURES ARE PREPARED BY REACTING A COMPOUND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO ABOUT 10,000 AND AT LEAST TWO TERMINAL OH GROUPS (1), AN ORGANIC POLYISOCYANATE (2) HAVING AT LEAST TWO NCO GROUPS AND A MOLECULAR WEIGHT OF FROM ABOUT 100 TO ABOUT 10,000 AND WATER (3) IN AMOUNTS SUCH THAT THE NCO:OH OR NCO TO NH IS FROM 0.8/1 TO 2/1, THE PRODUCT OF THE REACTION HAVING A SHORE A HARDNESS OF AT LEAST 50, A TENSILE STRENGTH OF AT LEAST 50 KG. WT./CM.2 AND A SOFTENING POINT ABOUT 100*C. THE REACTION OCCURRING IN A SOLVENT THUS DISSOLVES THE COMPOUNDS (1) AND (2) AND DISSOLVES THE POLYURETHANE UREA FORMED WITH INCRESING DIFFICULTY AS POLYADDITION INCREASES AND CAUSES GELLING AFTER 20 MINUTES AT THE MOST, DOES NOT CAUSE SUBSTANTIAL SWELLING OF THE COMPLETELY REACTED POLYMER AND IS SUBSTANTIALLY REMOVED AFTER SOLIDIFICATION AND POURING THE REACTION MIXTURE INTO A SUPPORT.

Patent Agency Ranking