公开(公告)号：DE4034046A1

公开(公告)日：1992-04-30

申请号：DE4034046

申请日：1990-10-26

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER DR ,  ZSCHIESCHE RUTH DR ,  GABBERT HANS-JUERGEN DR ,  HAASE VOLKER ,  FIMMEL F KARL

IPC: C08L75/04 ,  C08G18/38 ,  C08G18/48 ,  C08G18/65 ,  C08K3/04 ,  C08K3/32 ,  C08K5/3492 ,  C08K13/02

Abstract: The invention relates to a process for the production of flame-resistant soft polyurethane foams which evolve less smoke in the event of fire, by reacting a) organic polyisocyanates and/or modified organic polyisocyanates with b) relatively high-molecular-weight compounds containing at least two reactive hydrogen atoms, and optionally c) chain extenders and/or crosslinking agents, in the presence of d) a mixture of flameproofing agents which contains: di) melamine, dii) expandable graphite and optionally diii) at least one additional other flameproofing agent, preferably a modified or unmodified ammonium polyphosphate, e) blowing agents, f) catalysts, and optionally g) assistants and/or additives, and melamine/expandable graphite/polyether-polyol dispersions which are suitable for this purpose.

公开(公告)号：DE3942330A1

公开(公告)日：1991-06-27

申请号：DE3942330

申请日：1989-12-21

Applicant: BASF AG

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

IPC: C08G18/48 ,  C08G18/66

Abstract: The invention relates to a process for the production of flexible, soft polyurethane foams having viscoelastic, structure borne soundproofing properties in a temperature range of from -20 DEG C to +80 DEG C, by reacting a) a polyoxyalkylene-polyol mixture containing ai) a block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9 % by weight, based on the weight of the polyoxypropylene units, of terminally bonded ethylene oxide units, and prepared by anionic polymerisation at elevated temperature of 1,2-propylene oxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8 comprising water and glycerol and/or trimethylolpropane, and polymerisation of ethylene oxide onto the resultant polyoxypropylene adduct, and aii) at least one difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85 % by weight, based on the total weight of polymerised alkylene oxide units, of oxyethylene units, and having a hydroxyl number of from 20 to 80, and b) optionally 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 optionally f) assistants and/or additives, and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.