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    Stabilized polyurethanes
    2.
    发明授权
    Stabilized polyurethanes 失效
    稳定的聚氨酯

    公开(公告)号：US3642669A

    公开(公告)日：1972-02-15

    申请号：US3642669D

    申请日：1969-09-04

    Applicant: BAYER AG

    Inventor： NAST ROLAND ,  OERTEL HARALD ,  LEY KURT

    IPC: C08K5/13 ,  C08K5/3475 ,  C08G41/00 ,  C08G51/58 ,  C08G51/60

    CPC classification number: C08K5/13 ,  C08K5/3475 ,  Y10S528/906 ,  C08L75/04

    Abstract: AS STABILIZERS AND FURTEHERMORE TO STABILIZED POLYURETHANES BEING STABILIZED WITH A SYNERGISTIC MIXUTRE CONSISTING OF A) AN ANISOLE AND B) A 2-(2''-HYDROXYPHENYL)-BENZOTRIAZOLE.

    2-((2-(CH3-O-)PHENYL)-CH2-),6-(TERT ALKYL-)PHENOL

    THE INVENTION RELATES TO STABILIZED POLYURETHANES, ESPECAILLY PLYURETHANE ELASTOMER THREADS AND FOILS, AGAINST DEGARADTATION AND DISCLORATIN CAUSED BY THE ACTION OF LIGHT OR UV RADIATION, OXYGEN, SUBSTANCES PRESENT IN THE ATMOSPHERE, SUCH AS NITROGEN OXIDES, AND HEAT BY THE ADDITION OF ALKOXY SUBSTITUTED, STERICALLY HINDERED PHENOLS WHICH HAVE A 2-(2''-HYDROXY-3''-TERTIARY ALKYL BENZYL)-ANISOLE UNIT:

    Alpha, alpha-bis-(2-hydroxyphenyl)-diisopropyl benzenes
    8.
    发明授权
    Alpha, alpha-bis-(2-hydroxyphenyl)-diisopropyl benzenes 失效
    α，α-双 - （2-羟基苯基） - 二异丙基苯

    公开(公告)号：US3875246A

    公开(公告)日：1975-04-01

    申请号：US36950773

    申请日：1973-06-13

    Applicant: BAYER AG

    Inventor： OERTEL HARALD ,  ROOS ERNST ,  LEY KURT

    IPC: C07C39/17 ,  C08K5/13 ,  C07C39/12

    CPC classification number: C07C39/17 ,  C07C2601/08 ,  C07C2601/14 ,  C08K5/13 ,  C08L75/04

    Abstract: The invention relates to a process for stabilising polyurethanes, particularly polyurethane elastomer threads and films, against degradation and discoloration under the action of light or UV radiation, oxygen, atmospheric constituents (e.g. nitrogen oxides) and heat by the addition of bisphenols.

    Abstract translation: 本发明涉及一种稳定聚氨酯，特别是聚氨酯弹性体线和膜的方法，其在光或紫外线辐射，氧气，大气成分（如氮氧化物）和加入双酚的作用下，降解和变色。

    Process for making water vapor permeable microporous sheeting
    9.
    发明授权
    Process for making water vapor permeable microporous sheeting 失效
    制造水蒸汽渗透微孔薄膜的工艺

    公开(公告)号：US3575894A

    公开(公告)日：1971-04-20

    申请号：US3575894D

    申请日：1968-07-22

    Applicant: BAYER AG

    Inventor： ZORN BRUNO ,  OERTEL HARALD ,  DIETERICH DIETER

    IPC: C08J9/28 ,  C08L75/04 ,  C08G53/08 ,  C08G1/20

    CPC classification number: C08J9/28 ,  C08J2375/04 ,  C08L75/04

    Abstract: A PROCESS FOR PRODUCING MICROPOROUS SHEETING PERMEABLE TO WATER VAPOR COMPRISING DISSOLVING FROM ABOUT 90 TO ABOUT 70 PARTS BY WEIGHT OF (A) A POLYURETHANE UREA HAVING SUBSTANTIALLY NO FREE NCO GROUPS AND FROM ABOUT 10 TO 30 PARTS BY WEIGHT OF (B) A HIGH MOLECULAR WEIGHT SUBSTANTIALLY LINEAR CATIONIC POLYURETHANE HAVING SUBSTANTIALLY NO FREE NCO GROUPS IN (C) A WATER SOLUBLE STRONGLY POLAR SOLVENT FOR THE POLYURETHANE UREA (A), THE SOLVENT HAVING A BOILING POINT ABOVE ABOUT 100*C., SAID SOLUTION CONTAINING (E) FROM ABOUT 0.5 TO 7% BY WEIGHT, BASED ON THE TOTAL SOLUTION, OF WATER TO YIELD A SOLUTION (D), SHAPING THE SOLUTION (D) AND EXTRACTING THE SOLVENT FROM THE RESULTING PRODUCT. SOLUTION (D) MAY EITHER BE EXPOSED TO MOIST AIR IN ORDER TO EFFECT GELLING PRIOR TO EXTRACTING THE SOLVENT WITH A NON-SOLVENT WHICH IS MISCIBLE WITH THE SOLVENT OR MAY BE TREATED WITH A SOLVENT/NONSOLVENT MIXTURE, SUBSEQUENTLY WITH FURTHER SOLVENT/NONSOLVENT MIXTURES OF DECREASING SOLVENT CONTENT AND FINALLY WITH PURE NON-SOLVENT. IN THIS LATTER MODE OF OPERATION GELLING IN MOIST AIR MAY BE OMITTED.

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