公开(公告)号：DE10111823A1

公开(公告)日：2002-09-26

申请号：DE10111823

申请日：2001-03-13

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER ,  BRUCHMANN BERND ,  WAGNER KLAUS ,  MUELLER JENS

IPC: C08G18/40 ,  C08G18/48 ,  C08G18/63 ,  C08G59/14

Abstract: Preparation of soft polyurethane (PU) foam (A) by reacting a polyisocyanate (I) with a block polyoxypropylene-polyoxyethylene polyol (II), having at least two isocyanate-reactive hydrogen atoms; hydroxy number 25-45 mg potassium hydroxide/g and content of terminally bound ethylene oxide units 15-17wt.% on total amount of alkylene oxide. Preparation of soft polyurethane (PU) foam (A) by reacting a polyisocyanate (I) with a block polyoxypropylene-polyoxyethylene polyol (II), having at least two isocyanate-reactive hydrogen atoms; hydroxy number 25-45 mg potassium hydroxide/g and content of terminally bound ethylene oxide units 15-17wt.% on total amount of alkylene oxide. (II) is prepared by addition of ethylene and propylene oxides to a starter molecule (III) of mean functionality 3. Independent claims are also included for: (a) (A) produced by the new method; (b) (II); and (c) polyol mixture, for preparing soft PU, that contains at least one (II).

公开(公告)号：DE10054924A1

公开(公告)日：2002-05-23

申请号：DE10054924

申请日：2000-11-06

Applicant: BASF AG

Inventor： SCHERZER DIETRICH ,  WITTSTOCK KLAUS ,  REGENAUER WOLFGANG ,  LUTTER HEINZ-DIETER

IPC: G01N15/08 ,  G01N29/14 ,  G01N29/36 ,  G01N29/42 ,  G01N29/00

Abstract: A process for detecting cell holes during foam formation in foam forming substances with recording of the sound alteration due to the holes by at least one device and assessment of the sound level with the aid of at least one evaluation unit is new. Independent claims are also included for: (1) a sound detection unit as above, including a device for recording sound alterations connected to a sound level evaluation unit; (2) a computer program with a program code for detecting, recording, and measuring the sound levels; and (3) a holder containing the sound alteration detector fixed to the holder.

公开(公告)号：CA2335664A1

公开(公告)日：2001-08-12

申请号：CA2335664

申请日：2001-02-12

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER ,  BECKER ARMIN ,  SCHERZER DIETRICH ,  SCHAFER HARALD ,  BRUCHMANN BERND

IPC: C08L75/04 ,  C08G18/06 ,  C08G18/40 ,  C08G18/48 ,  C08G18/62 ,  C08G18/72 ,  C08G101/00 ,  C08J9/00 ,  C08L75/08 ,  C08L101/00 ,  C08G18/68 ,  C08G65/332

Abstract: In a process for producing polyurethane foams by reacting isocyanates with compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, the isocyanates used are (cyclo)aliphatic isocyanates and the reaction is carried out in the presence of substances which effect framework formation in the polyurethane foam.

公开(公告)号：CA2307082A1

公开(公告)日：2000-10-29

申请号：CA2307082

申请日：2000-04-28

Applicant: BASF AG

Inventor： RENZ HANS ,  BRUCHMANN BERND ,  LUTTER HEINZ-DIETER

IPC: C08G18/28 ,  C08G18/32 ,  C08G18/66 ,  C08G18/76 ,  C08G18/72

Abstract: In a compound of the formula I(see formula I)(reactive polymer), L is a polymer, XY is a reactive radical which is inert toward NCO groups and splits off one or more protective groups Y under acidic, neutral or basic conditions and the radical X bears, after Y has been split off, at least two groups which are reactive toward isocyanates. Also provided are processes for preparing such a polymer and for preparing a polymer polyol which is obtainable by reacting a polymer of the formula I with an acid or base. A polymer polyol as is obtainable by treatment of a reactive polymer according to the present invention in the neutral, acidic or basic range can be used to produce a polyaddition product or polycondensation product.

公开(公告)号：CA2246636A1

公开(公告)日：1999-04-10

申请号：CA2246636

申请日：1998-10-07

Applicant: BASF AG

Inventor： BRUCHMANN BERND ,  LUTTER HEINZ-DIETER

IPC: C08G18/28 ,  C08G18/48 ,  C08G18/65 ,  C08J9/04 ,  C08G18/66

Abstract: In a process for producing flexible polyurethane foams by the reaction known per se of polyisocyanates with compounds containing at least two hydrogen atoms which react with isocyanate, the reaction is carried out in the presence of cyclic or heterocyclic compounds containing at least one reactive hydrogen atom.

公开(公告)号：CA2031910C

公开(公告)日：1998-06-02

申请号：CA2031910

申请日：1990-12-10

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER ,  LEPPKES REINHARD ,  HORN PETER ,  DECKER WALTER ,  HAASE VOLKER ,  HINZ WERNER

IPC: C08G18/48 ,  C08G18/66 ,  C08L71/02 ,  C08J9/04 ,  C08G18/12 ,  C08G59/14 ,  C08G18/28

Abstract: The present invention relates to a process for the preparation of flexible, soft polyurethane foams having viscoelastic, structure-borne sound-proofing properties in a temperature range of from -20.degree.C to +80.degree.C by reacting a) a polyoxyalkylene-polyol mixture containing ai) block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9 % by weight of terminal ethylene oxide units, based on the weight of the polyoxypropylene units, prepared by anionic polymerization, at elevated temperatures, of 1,2-propyleneoxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8, comprising water and ylycerol and/or trimethylolpropane, and polymerization of acylene oxide onto the resultant polyoxypropylene adduct, and aii) one or more difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85 % by weight of oxyethylene units, based on the total weight of polymerized alkylene oxide units, and having a hydroxyl number of from 20 to 80, and b) if desired low-molecular-weight chain extenders with c) organic and/or modified organic polyisocyanates in the presence of d) catalysts, e) blowing agents, preferably water, and, if desired, f) auxiliaries and/or additives, and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.

公开(公告)号：CA2002399A1

公开(公告)日：1990-05-09

申请号：CA2002399

申请日：1989-11-07

Applicant: BASF AG

Inventor： HORN PETER ,  REHMER GERD ,  LUTTER HEINZ-DIETER ,  RAMLOW GERHARD

IPC: C08F216/14 ,  C08F218/10 ,  C08F220/28 ,  C08F220/58 ,  C08F222/20 ,  C08F226/00 ,  C08F226/06 ,  C08F290/06 ,  C08F299/02 ,  C08G18/40 ,  C08G18/62 ,  C08L75/04 ,  C09K23/52

Abstract: The novel copolymers having K values of from 5 to 80 are prepared by free-radical polymerisation of A) 20 to 80% by weight, based on the total weight of (A) and (B), of at least one olefinically unsaturated polyoxyalkylene alcohol or polyester alcohol adduct, (B) 80 to 20% by weight, based on the total weight of (A) and (B), of at least one vinyl monomer from the group comprising N-vinylformamide, -2-pyrrolidone, -2-piperidone, -2-caprolactam, -imidazole, -2-ethyleneurea and -2-propyleneurea, C) 0 to 40 parts by weight of glycidyl acrylate and/or glycidyl methacrylate, D) 0 to 10 parts by weight of at least one alpha , beta -monoolefinically unsaturated acid and E) 0 to 30 parts by weight of at least one olefinically unsaturated carboxamide and/or carboxylate and/or styrene, the parts by weight of (C), (D) and (E) in each case being based on 100 parts by weight of the monomers (A) and (B). The copolymers are used as assistants and/or additives, for example as dispersion and/or emulsification assistants, or as additives for improving the mechanical properties, in formulations for the preparation of polyisocyanate polyaddition products.