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    41.
    发明专利
    未知

    公开(公告)号：DE4215141C1

    公开(公告)日：1993-12-09

    申请号：DE4215141

    申请日：1992-05-08

    Applicant: HOECHST AG

    Inventor： GUTWEILER MATTHIAS DR ,  HUTTEN ULRICH DR ,  PFAHLER GERHARD DR ,  SCHINDLER HERMANN DR

    IPC: B32B17/10 ,  C03C27/12 ,  C08K5/00 ,  C08K5/134 ,  C08K5/25 ,  C08K5/3432 ,  C08K5/3435 ,  C08K5/36 ,  C08K5/37 ,  C08K5/524 ,  C08K5/57 ,  C08L29/14 ,  C08K5/13 ,  C03C17/28 ,  B60J1/00 ,  B63B19/02 ,  B64D11/00 ,  E06B5/10

    Abstract: Polyvinylbutyrals (PVBs) having improved thermostability and, in some cases, improved light stability which contain, as stabilisers, polycyclic phenols of the formula I whose phenolic radicals contain a quaternary carbon atom in the para-position to the phenolic hydroxyl group, optionally in combination with synergistic nitrogen-, sulphur- or phosphorus-containing costabilisers of types a) to d) and may additionally contain light stabilisers, plasticisers, further conventional stabilisers, conventional release agents (antiblocking agents) and conventional additives. Process for the preparation of the stabilised PVBs, and the use thereof, preferably in plasticised form, for production of plasticiser-containing films by thermoplastic shaping. Use of the resultant low-yellowing films as interlayer films having a significantly reduced yellow coloration for the production of composite glasses or glass composites made from silicate glass sheets.

    42.
    发明专利
    未知

    公开(公告)号：BR9104964A

    公开(公告)日：1992-06-23

    申请号：BR9104964

    申请日：1991-11-14

    Applicant: HOECHST AG

    Inventor： PFAHLER GERHARD DR ,  SCHMAILZL GEORG DR

    IPC: C08F6/02 ,  C08K5/04 ,  C08K5/06 ,  C08L101/00 ,  C08K5/05

    Abstract: In synthetic moulding compositions, especially those based on olefin polymers, which contain phenolic stabilisers and metal ions as catalyst residues, the discoloration at the processing temperature is reduced when they contain triglycerol or ditrimethylolpropane as catalyst inactivators.

    44.
    发明专利
    未知

    公开(公告)号：DE58900821D1

    公开(公告)日：1992-03-19

    申请号：DE58900821

    申请日：1989-12-15

    Applicant: HOECHST AG

    Inventor： BOEHSHAR MANFRED DR ,  KLEINER HANS-JERG DR ,  WALDMANN KARL DR ,  PFAHLER GERHARD DR

    IPC: C09K15/32 ,  C07F3/02 ,  C07F9/40 ,  C07F9/48 ,  C08K5/53 ,  C08K5/5393 ,  C08L23/00 ,  C08L23/02

    Abstract: Process for the preparation of organophosphorus derivatives of 2,4-di-t-butylphenol having a high content of organophosphorus derivatives of biphenyl, characterised in that, in the first step, a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35 is reacted under Grignard conditions with magnesium to give the corresponding Grignard compound, which is further reacted, in a second step, with bis(2,4-di-t-butylphenyl) chlorophosphite of the formula IV … … to form a mixture in which at least 50% by weight of the phosphorus is bound in the form of tetrakis(2,4-di-t-butylphenyl)-4,4'-biphenylene diphosphonite of the formula I … … the bonding of the phosphorus being determined by P-NMR analysis. … The invention furthermore relates to a polyolefin moulding composition which contains tetrakis(2,4-di-t-butylphenyl)- 4,4'-biphenylene diphosphonite of the formula I prepared by reacting a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35, with magnesium to give the Grignard compound and subsequent reaction thereof with bis(2,4-di-t-butylphenyl) chlorophosphite. … The moulding composition has improved properties compared with moulding compositions which contain said phosphonite prepared in accordance with the prior art. … The invention also relates to a process for the preparation of 4,4'-dihalomagnesium compounds of biphenyl by reacting a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35 with magnesium in the absence of an entrainer, in which process a 4,4'-dihalobiphenyl whose halogen has an atomic weight of at least 35 is reacted with finely divided magnesium kept in suspension.

    45.
    发明专利
    未知

    公开(公告)号：DE4028407A1

    公开(公告)日：1992-03-12

    申请号：DE4028407

    申请日：1990-09-07

    Applicant: HOECHST AG

    Inventor： BERGNER DIETER DIPL ING ,  PFAHLER GERHARD DR

    IPC: C08K5/372 ,  C08K5/524 ,  C08K5/527 ,  C08K5/5393

    Abstract: The polyolefin moulding material described consists of: 95-99.98 % by wt. of an olefin polymer, 0.01-2.5 % by wt. of at least one compound of formula (I), formula (II), formula (III), formula (IV): R - (S)x - R or formula (V), plus at least one phenolic anti-oxidant. This material, which is suitable for the production of calendered sheet, has only a very slight tendency to stick to the hot calendering rolls and the polymer molecules have only a slight tendency to decompose during processing.

    Organo:phosphorus derivs. of 2,4-di:tert:butyl-phenol
    48.
    发明专利
    Organo:phosphorus derivs. of 2,4-di:tert:butyl-phenol 未知

    公开(公告)号：DE3941511A1

    公开(公告)日：1990-09-06

    申请号：DE3941511

    申请日：1989-12-15

    Applicant: HOECHST AG

    Inventor： BOEHSHAR MANFRED DR ,  KLEINER HANSS-JERG DR ,  WALDMANN KARL DR ,  PFAHLER GERHARD DR

    IPC: C07F3/02 ,  C07F9/40 ,  C07F9/48 ,  C08K5/5393

    Abstract: Prodn. of organophosphorus derivs. (I) of 2,4-di-tert.-butylphenol, contg. a high proportion of organophosphorus derivs. of biphenyl, comprises (a) reaction of a 4,4'-dihalobiphenyl (II) (with halogen atomic wt. at least 35) with Mg to form the corresp. Grignard reagent, followed by (b) reaction with phosphorous acid bis-(2,4-di-tert.-butyl-phenyl)-ester chloride of formula (III) to form a mixt. in which at least 50 wt.% of the phosphorus is in the form of tetrakis-(2,4-di-tert. -butylphenyl) -4,4'-biphenylene-diphosphonite of formula (IV) (as determined by 31P-NMR). Pref. at least 60 wt.% of the P is in the form of cpd. (IV), stage (b) is carried out at 30 to +30 deg.C pref. -20 to +20 deg. C, (a) is carried out without an entraining agent, using finely-divided Mg which is kept in suspension, pref. by agitation, esp. pref. by ultrasonic means, amt. of Mg is 2.2-3 equivs. per mol. (II) and the halogen in (II) is Cl or Br.

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