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    PRODUCTION OF RIGID POLYURETHANE FOAM HAVING LOW THERMAL CONDUCTIVITY
    2.
    发明专利
    PRODUCTION OF RIGID POLYURETHANE FOAM HAVING LOW THERMAL CONDUCTIVITY 失效

    公开(公告)号：JPH1180539A

    公开(公告)日：1999-03-26

    申请号：JP18602698

    申请日：1998-07-01

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD DR ,  HAHN KLAUS DR ,  ROTERMUND UDO DR ,  VOLKERT OTTO

    IPC: C08J9/04 ,  C08G18/00 ,  C08G18/48 ,  C08J9/00 ,  C08K3/04 ,  C08L75/04

    Abstract: PROBLEM TO BE SOLVED: To produce the subject foam having lowered thermal conductivity and good handleability, etc., and useful as an insulation material for composite element, etc., by adding graphite to an organic polyisocyanate, etc., and a compound having reactive hydrogen atom and reacting the mixture in the presence of a foaming agent, etc. SOLUTION: The objective foam useful for filling the hollow space of a refrigeration apparatus or a heating element is produced by reacting (A) an organic polyisocyanate and/or a modified organic polyisocyanate (e.g. diphenylmethane diisocyanate) with (B) one or more kinds of compounds having >=2 reactive hydrogen atoms (e.g. polyether polyol) in the presence of (C) a foaming agent, (D) a catalyst and optionally (E) an assistant and/or an additive. In the above reaction, preferably 1-10 wt.% (based on the whole foam) of graphite is added to the component A and/or B. Preferably, >=50% of the graphite has particle diameter of

    EXPANDABLE RUBBER-MODIFIED STYRENE POLYMER, ITS PRODUCTION, AND PRE-EXPANDED BEAD
    3.
    发明专利
    EXPANDABLE RUBBER-MODIFIED STYRENE POLYMER, ITS PRODUCTION, AND PRE-EXPANDED BEAD 失效

    公开(公告)号：JPH10310675A

    公开(公告)日：1998-11-24

    申请号：JP10742498

    申请日：1998-04-17

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD DR ,  HAHN KLAUS DR ,  HENN ROLF DR ,  WASSMER KARL-HEINZ DR ,  GAUSEPOHL HERMANN DR ,  KNOLL KONRAD ,  BATSCHEIDER KARL-HEINZ

    IPC: C08J9/14 ,  C08F287/00 ,  C08J9/16 ,  C08L25/06 ,  C08L51/04 ,  C08L53/02

    Abstract: PROBLEM TO BE SOLVED: To provide an expandable rubber-modified styrene polymer showing improved elasticity recovery, by incorporating a low-boiling blowing agent in a polymer mixture comprising a continuous phase of a styrene copolymer and rubber particles dispersed therein and comprising a butadiene/styrene block copolymer, and having a lamella structure free from polystyrene. SOLUTION: The expandable styrene polymer contains desirably 85-93 wt.% polystyrene or styrene copolymer (containing up to 50 wt.%, desirably up to 80 wt.% comonomer). The polystyrene contains a small amount (0.005-0.05 mol based on the styrene) of a crosslinking agent to be copolymerized. The expandable styrene polymer is desirably one containing 5-30 wt.% butadiene/styrene block copolymer in the polymer mixture and dispersed in the polystyrene phase in the form of particles. The ratio of the average length 1 of the rubber particles to the average thickness d is desirably above 5/1. The mixture contains 2-15 pts.wt., based on the composition, low-boiling blowing agent.

    4.
    发明专利
    未知

    公开(公告)号：DE19716572A1

    公开(公告)日：1998-10-22

    申请号：DE19716572

    申请日：1997-04-19

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD DR ,  HAHN KLAUS DR ,  HENN ROLF DR ,  WASMER KARL-HEINZ DR ,  GAUSEPOHL HERMANN DR ,  KNOLL KONRAD DR ,  BATSCHEIDER KARL-HEINZ

    IPC: C08J9/14 ,  C08F287/00 ,  C08J9/16 ,  C08L25/06 ,  C08L51/04 ,  C08L53/02

    Abstract: An expandable rubber modified styrene polymer (I) comprises (A) a continuous phase of polystyrene or a styrene comonomer containing up to 50 wt.% comonomer (B) 5-30 wt.% (w.r.t. polymer mixture) of dispersed rubber particles and (C) 2-15 pts.wt. (w.r.t. 100 pts wt. polymer mixture) of a low binding blowing agent. The rubber particles consists of a butadiene/styrene block copolymer having a compact lamella structure without polystyrene inclusions. Also claimed are: (i) a process for the production of (I) by dissolving (B) in (A) followed by polymerisation of the monomers and processing to a granular form whereby (C) is added during or after polymerisation. (ii) pre-foamed beads having pore walls made of (I).

    6.
    发明专利
    未知

    公开(公告)号：AT187470T

    公开(公告)日：1999-12-15

    申请号：AT98110611

    申请日：1998-06-10

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD DR ,  HAHN KLAUS DR ,  ROTERMUND UDO DR ,  VOLKERT OTTO DR

    IPC: C08J9/04 ,  C08G18/00 ,  C08G18/48 ,  C08J9/00 ,  C08K3/04 ,  C08L75/04

    Abstract: In the production of rigid polyurethane (PUR) foam with low thermal conductivity by reacting (a) organic and/or modified organic polyisocyanates with (b) compounds containing NOTLESS 2 reactive hydrogen atoms in the presence of (c) blowing agent, (d) catalyst and optionally (e) ancillaries and/or additives, the novelty is that graphite is added to (a) and/or (b). Also claimed is rigid PUR foam produced in this way.

    8.
    发明专利
    未知

    公开(公告)号：DE19749570A1

    公开(公告)日：1999-05-12

    申请号：DE19749570

    申请日：1997-11-10

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD DR ,  HAHN KLAUS DR ,  LOEFFLER ACHIM DR ,  LORENZ MARIA DR

    IPC: C08F4/36 ,  C08J9/16 ,  C08F12/08

    Abstract: Expandable styrene polymers are produced by suspension polymerisation of styrene (and possibly up to 20 wt.% comonomer) using a polyfunctional peroxide (A) with a half-life (t) of 1 hour at 80-100 degrees C which initiates 2 or more polymer chains on decomposition and a peroxide (B) with t = 1 hour at 110-150 degrees C, in a mol ratio of (B):(A) greater than 40:60.

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