公开(公告)号：DE3579992D1

公开(公告)日：1990-11-08

申请号：DE3579992

申请日：1985-10-01

Applicant: BAYER AG

Inventor： RASSHOFER WERNER DR ,  GRIGAT ERNST PROF DR ,  GROEGLER GERHARD DR ,  HESS HEINRICH DR ,  KOPP RICHARD DR

IPC: C08G18/00 ,  C08G18/10 ,  C08G18/40 ,  C08G18/46 ,  C08G18/50 ,  C08G18/65

Abstract: High molecular weight amines having reduced low molecular weight amine contents are obtained by reacting a mixture of (1) a high molecular weight amine and (2) a low molecular weight amine with (3) an isocyanate in quantities such that from 0.5 to 10 equivalents of isocyanate are present for each equivalent of low molecular weight amine. The product of high molecular weight amines is particualrly useful in the production of isocyanate addition products such as polyurethane plastics and foams.

公开(公告)号：DE3568445D1

公开(公告)日：1989-04-06

申请号：DE3568445

申请日：1985-01-21

Applicant: BAYER AG

Inventor： GROGLER GERHARD DR ,  HESS HEINRICH DR ,  KOPP RICHARD DR

IPC: C08G18/00 ,  C07C265/00 ,  C08G18/08 ,  C08G18/70 ,  C08G18/72 ,  C08G18/80

Abstract: The present invention relates to a process for the production of solid polyisocyanates of retarded reactivity stabilized by surface modification by reacting solid, finely divided polyisocyanates, and particularly dimeric tolylene diisocyanate, dimeric diphenylmethane diisocyanate and 3,3'-diisocyanato-4,4'-dimethyl-N,N'-diphenyl urea, with acyclic, mono- or bicyclic compounds having an amidine or guanidine structure and which do not contain any hydrogen atoms reactive to isocyanates at room temperature in a quantity of from 0.1 to 25 equivalent percent of "amidine" or "guanidine" per isocyanate equivalent. The reaction may be carried out directly in a liquid medium selected from the group consisting of active hydrogen compounds, plasticizers, water, and solvents to form a suspension of polyadduct-coated, stabilized polyisocyanates in the liquid medium.

公开(公告)号：AU2230488A

公开(公告)日：1989-04-06

申请号：AU2230488

申请日：1988-09-19

Applicant: BAYER AG

Inventor： GROGLER GERHARD DR ,  RUCKES ANDREAS DR ,  HESS HEINRICH DR ,  KOPP RICHARD DR

IPC: C08G18/66 ,  C08G18/10 ,  C08G18/32 ,  C08G18/48 ,  C08G18/65

Abstract: The present invention relates to a process for the production of polyurethane urea elastomers from (a) NCO-terminated prepolymers based on polyisocyanates and polyethers having a molecular weight of 400 to about 10,000 and an ethylene oxide content of about 10 to 60 mole-% and (b) solid diaminodiphenyl ureas corresponding to the formula wherein R1, R2, R3 and R4 may be the same or different and represent hydrogen or C1-C6 alkyl radicals and wherein the amino groups are in the m-and/or p-position to the urea group, characterized in that the NCO prepolymers are reacted with the diaminodiphenyl ureas in powder-form in a heterogeneous phase at temperatures of about 5 DEG to 40 DEG C. The present invention is also directed to the polyurethane urea elastomers prepared by this process.

公开(公告)号：AT37383T

公开(公告)日：1988-10-15

申请号：AT85105673

申请日：1985-05-09

Applicant: BAYER AG

Inventor： GROEGLER GERHARD DR ,  KOPP RICHARD DR ,  HESS HEINRICH DR

IPC: C08G18/00 ,  B01J13/02 ,  C08G18/70 ,  C08G18/72 ,  C08L75/04 ,  C09D175/00 ,  C09D175/04 ,  C14C11/00 ,  D06N3/14 ,  C07C118/00

公开(公告)号：DE3700572A1

公开(公告)日：1988-07-21

申请号：DE3700572

申请日：1987-01-10

Applicant: BAYER AG

Inventor： KOPP RICHARD DR ,  GROEGLER GERHARD DR ,  HESS HEINRICH DR ,  SCHAEFER HERMANN DR ,  RASSHOFER WERNER DR

IPC: B29C39/12 ,  B29K75/00 ,  B29K105/04 ,  B29L31/58 ,  C08G18/70 ,  C08G18/80 ,  C08J9/04 ,  B32B27/40 ,  B32B5/18 ,  C08G18/40 ,  C08G18/65 ,  C08G18/14

Abstract: A composite plastic molding made up of a plastic foam and having a polyurethane skin is made by heating a reactive one-component system for form a polyurethane skin and then joining the polyurethane skin to the plastic foam. The one-component system is composed of a finely divided polyisocyanate in which from 0.1 to 25 equivalent percent of the isocyanate groups have been deactivated, a polyamine and/or polyol having a molecular weight of from 400 to 8000 and optionally a chain extending agent, a catalyst and known auxiliaries and additives.

公开(公告)号：DE3563056D1

公开(公告)日：1988-07-07

申请号：DE3563056

申请日：1985-09-06

Applicant: BAYER AG

Inventor： KOPP RICHARD DR ,  OERTEL GUNTER DR ,  WEIGAND ECKEHARD DR ,  WIEDERMANN ROLF DR

IPC: C08G18/00 ,  C08G18/08 ,  C08G18/32 ,  C08G18/65 ,  C08G18/14

公开(公告)号：DE3464613D1

公开(公告)日：1987-08-13

申请号：DE3464613

申请日：1984-12-17

Applicant: BAYER AG

Inventor： GROGLER GERHARD DR ,  KOPP RICHARD DR ,  HESS HEINRICH DR

IPC: C08G18/00 ,  C08G18/08 ,  C08G18/30 ,  C08G18/32 ,  C08G18/65 ,  C08G18/78 ,  C08G18/80 ,  C08L75/02 ,  C08J3/08

Abstract: The invention relates to a process for the in situ production of dispersions or solutions of urea group-containing aromatic isocyanates by the low temperature reaction of aromatic diisocyanates and/or polyisocyanates (the NCO groups of which preferably exhibit different reactivities) with from 0.15 to 0.4 mols of water per NCO equivalent in relatively high molecular weight polyols and in the presence of catalysts accelerating the NCO/water reaction. Such catalysts are preferably selected from peralkylaminoalkyl ethers, peralkylamino-polyalkylene ethers and/or peralkyl-polyalkylene-polyamines. The present invention also relates to the resulting metastable solutions or dispersions and to the use thereof, optionally with the further addition of relatively high and low molecular weight compounds having hydroxyl, amino or hydrazide groups and with the optional addition of other polyisocyanates in polyurethane-forming ratios for the production of polyurethanes.

公开(公告)号：DE3174524D1

公开(公告)日：1986-06-05

申请号：DE3174524

申请日：1981-11-19

Applicant: BAYER AG

Inventor： GROGLER GERHARD DR ,  RASSHOFER WERNER DR ,  KOPP RICHARD DR

IPC: C08G18/00 ,  C07D251/70 ,  C08G18/38 ,  C08G18/79 ,  C08G18/80 ,  C08L75/00 ,  C08L75/04

公开(公告)号：DE3437632A1

公开(公告)日：1986-04-17

申请号：DE3437632

申请日：1984-10-13

Applicant: BAYER AG

Inventor： RASSHOFER WERNER DR ,  GRIGAT ERNST PROF DR ,  GROEGLER GERHARD DR ,  HESS HEINRICH DR ,  KOPP RICHARD DR

IPC: C08G18/00 ,  C08G18/10 ,  C08G18/40 ,  C08G18/46 ,  C08G18/50 ,  C08G18/65 ,  C08G63/76 ,  C08G65/32 ,  C08G65/48 ,  C08G59/50 ,  C08G14/06

Abstract: High molecular weight amines having reduced low molecular weight amine contents are obtained by reacting a mixture of (1) a high molecular weight amine and (2) a low molecular weight amine with (3) an isocyanate in quantities such that from 0.5 to 10 equivalents of isocyanate are present for each equivalent of low molecular weight amine. The product of high molecular weight amines is particualrly useful in the production of isocyanate addition products such as polyurethane plastics and foams.

公开(公告)号：DE3362307D1

公开(公告)日：1986-04-03

申请号：DE3362307

申请日：1983-08-22

Applicant: BAYER AG

Inventor： HESS HEINRICH DR ,  GROGLER GERHARD DR ,  KOPP RICHARD DR

IPC: C08G18/00 ,  C07D229/00 ,  C08G18/10 ,  C08G18/32 ,  C08G18/38 ,  C08G18/65 ,  C08G18/72 ,  C08G18/79

Abstract: Aromatic uret dione diurea diamines corresponding to the formula in which X, Y, m and n are as defined herein are produced by reacting an aromatic diamine with a diisocyanate corresponding to a specified formula in a molar ratio of diamine to diisocyanate of at least 1.8 to 1. These diamines are particularly useful in the production of elastomers.