-
公开(公告)号：DE3272455D1
公开(公告)日：1986-09-11
申请号：DE3272455
申请日：1982-09-09
Applicant: BASF AG
Inventor： BUETHE INGOLF DR , STRAEHLE WOLFGANG DR , MARX MATTHIAS DR , PETERS REINHARD DR
Abstract: For the preparation of elastic flexible polyurethane foams with improved breaking elongation and very good setting behavior as well as densities from 7 to 120 grams per liter, organic polyisocyanates are reacted in the presence of blowing agents, catalysts and, optionally, auxiliaries and/or additives with polyols based on polyoxyalkylene polyols having terminal oxyethylene blocks of a degree of oxyethlation of 1 to 13 and which have a content of primary hydroxyl groups at the corresponding degree of oxyethylation equal or exceeding the value of curve A in the Figure in which curve A describing the relationship of the content of primary hydroxyl groups with the degree of oxyethylation.
-
公开(公告)号：AT104997T
公开(公告)日：1994-05-15
申请号：AT90124074
申请日：1990-12-13
Applicant: BASF AG
-
公开(公告)号：DE59005527D1
公开(公告)日：1994-06-01
申请号：DE59005527
申请日：1990-12-13
Applicant: BASF AG
Inventor： LUTTER HEINZ-DIETER DR , HINZ WERNER DR , DECKER WALTER , LEPPKES REINHARD W- BOBENHEIM- , REICH ERHARD DR , PETERS REINHARD DR , HAASE VOLKER , LUGMAYR MICHAEL
Abstract: Flexible polyurethane foams having low compressive strength and relatively good tensile strength are prepared by reacting a) a block polyoxypropylenepolyoxyethylenepolyol mixture which has a hydroxyl number of from 14 to 65, contains from 2 to 9% by weight, based on the weight of the polyoxypropylene units, of ethylene oxide units bonded in the terminal position and is prepared by anionic polymerization of the alkylene oxides with an initiator mixture having an average functionality of from 2.3 to 2.8 and consisting of water and glycerol and/or trimethylolpropane, or a mixture of these block polyoxypropylenepolyoxyethylenepolyol mixtures with bi- and/or trifunctional polyoxypropylenepolyoxyethylenepolyols having a hydroxyl number of from 20 to 70, and b) if required, 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 required, f) assistants and/or additives.
-
公开(公告)号：DK0433889T3
公开(公告)日：1994-05-30
申请号：DK90124074
申请日：1990-12-13
Applicant: BASF AG
Inventor： HINZ WERNER DR , LUTTER HEINZ-DIETER DR , DECKER WALTER , HAASE VOLKER , LEPPKES REINHARD DR , REICH ERHARD DR , PETERS REINHARD DR , LUGMAYR MICHAEL
Abstract: Flexible polyurethane foams having low compressive strength and relatively good tensile strength are prepared by reacting a) a block polyoxypropylenepolyoxyethylenepolyol mixture which has a hydroxyl number of from 14 to 65, contains from 2 to 9% by weight, based on the weight of the polyoxypropylene units, of ethylene oxide units bonded in the terminal position and is prepared by anionic polymerization of the alkylene oxides with an initiator mixture having an average functionality of from 2.3 to 2.8 and consisting of water and glycerol and/or trimethylolpropane, or a mixture of these block polyoxypropylenepolyoxyethylenepolyol mixtures with bi- and/or trifunctional polyoxypropylenepolyoxyethylenepolyols having a hydroxyl number of from 20 to 70, and b) if required, 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 required, f) assistants and/or additives.
-
公开(公告)号：DE3942329A1
公开(公告)日：1991-06-27
申请号：DE3942329
申请日：1989-12-21
Applicant: BASF AG
Inventor： LUTTER HEINZ-DIETER DR , HINZ WERNER DR , DECKER WALTER , LEPPKES REINHARD DR , REICH ERHARD DR , PETERS REINHARD DR , HAASE VOLKER , LUGMAYR MICHAEL
Abstract: Flexible polyurethane foams having low compressive strength and relatively good tensile strength are prepared by reacting a) a block polyoxypropylenepolyoxyethylenepolyol mixture which has a hydroxyl number of from 14 to 65, contains from 2 to 9% by weight, based on the weight of the polyoxypropylene units, of ethylene oxide units bonded in the terminal position and is prepared by anionic polymerization of the alkylene oxides with an initiator mixture having an average functionality of from 2.3 to 2.8 and consisting of water and glycerol and/or trimethylolpropane, or a mixture of these block polyoxypropylenepolyoxyethylenepolyol mixtures with bi- and/or trifunctional polyoxypropylenepolyoxyethylenepolyols having a hydroxyl number of from 20 to 70, and b) if required, 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 required, f) assistants and/or additives.
-
Patent Agency Ranking
公开(公告)号：DE3365163D1
公开(公告)日：1986-09-11
申请号：DE3365163
申请日：1983-10-24
Applicant: BASF AG
Inventor： BUETHE INGOLF DR , MARX MATTHIAS DR , SCHLEIER GISBERT DR , PETERS REINHARD DR
IPC: C08G18/10 , C08G18/48 , C08G18/76 , C08G18/80 , C07C125/073
Abstract: Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups and having an isocyanate content of from 12 to 30 percent by weight are obtained by reaction of a polyoxypropylene polyoxyethylene polyol containing 5 to 30 percent by weight of oxyethylene with diphenylmethane diisocyanate-based isocyanates. These polyisocyanate mixtures are storage stable at low temperature and yield flexible polyurethane foams having improved mechanical properties.
-
公开(公告)号：AT21255T
公开(公告)日：1986-08-15
申请号：AT83110594
申请日：1983-10-24
Applicant: BASF AG
Inventor： BUETHE INGOLF DR , MARX MATTHIAS DR , SCHLEIER GISBERT DR , PETERS REINHARD DR
IPC: C08G18/10 , C08G18/48 , C08G18/76 , C08G18/80 , C07C125/073
-
公开(公告)号：ES2052146T3
公开(公告)日：1994-07-01
申请号：ES90124074
申请日：1990-12-13
Applicant: BASF AG
Inventor： LUTTER HEINZ-DIETER DR , HINZ WERNER DR , DECKER WALTER , LEPPKES REINHARD DR , REICH ERHARD DR , PETERS REINHARD DR , HAASE VOLKER , LUGMAYR MICHAEL
Abstract: Flexible polyurethane foams having low compressive strength and relatively good tensile strength are prepared by reacting a) a block polyoxypropylenepolyoxyethylenepolyol mixture which has a hydroxyl number of from 14 to 65, contains from 2 to 9% by weight, based on the weight of the polyoxypropylene units, of ethylene oxide units bonded in the terminal position and is prepared by anionic polymerization of the alkylene oxides with an initiator mixture having an average functionality of from 2.3 to 2.8 and consisting of water and glycerol and/or trimethylolpropane, or a mixture of these block polyoxypropylenepolyoxyethylenepolyol mixtures with bi- and/or trifunctional polyoxypropylenepolyoxyethylenepolyols having a hydroxyl number of from 20 to 70, and b) if required, 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 required, f) assistants and/or additives.
-
公开(公告)号：AT21256T
公开(公告)日：1986-08-15
申请号：AT82108287
申请日：1982-09-09
Applicant: BASF AG
Inventor： BUETHE INGOLF DR , STRAEHLE WOLFGANG DR , MARX MATTHIAS DR , PETERS REINHARD DR
-
公开(公告)号：DE3241450A1
公开(公告)日：1984-05-10
申请号：DE3241450
申请日：1982-11-10
Applicant: BASF AG
Inventor： BUETHE INGOLF DR , MARX MATTHIAS DR , SCHLEIER GISBERT DR , PETERS REINHARD DR
Abstract: Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups and having an isocyanate content of from 12 to 30 percent by weight are obtained by reaction of a polyoxypropylene polyoxyethylene polyol containing 5 to 30 percent by weight of oxyethylene with diphenylmethane diisocyanate-based isocyanates. These polyisocyanate mixtures are storage stable at low temperature and yield flexible polyurethane foams having improved mechanical properties.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.019 seconds)
