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公开(公告)号：ES2053662T3
公开(公告)日：1994-08-01
申请号：ES88115375
申请日：1988-09-20
Applicant: BAYER AG
Inventor： GROGLER GERHARD DR , RUCKES ANDREAS DR , HESS HEINRICH DR , KOPP RICHARD DR
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.
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公开(公告)号：ES2052873T3
公开(公告)日：1994-07-16
申请号：ES89122771
申请日：1989-12-09
Applicant: BAYER AG
Inventor： RUCKES ANDREAS DR , GROGLER GERHARD DR , KOPP RICHARD DR
IPC: C07C273/18 , C07C275/40
Abstract: The present invention is directed to a process for the preparation of N,N'-bis-(3-aminophenyl)-ureas corresponding to formula (I) (I) wherein R represents a linear or branched C1-C6 alkyl group which is in the 2-, 4- and/or 6-position, characterized in that the corresponding phenylene diamines are reacted with urea in a molar ratio of greater than 2:1 in chlorobenzene as solvent.
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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
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.
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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
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.
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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.
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Patent Agency Ranking
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
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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
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.
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公开(公告)号：DE3173160D1
公开(公告)日：1986-01-16
申请号：DE3173160
申请日：1981-12-29
Applicant: BAYER AG
Inventor： RASSHOFER WERNER DR , GROGLER GERHARD DR , KOPP RICHARD DR
IPC: C07D405/14 , C07D251/54 , C07D251/70 , C07D405/12 , C08G18/00 , C08G18/30 , C08G18/78 , C08G18/79 , C08G18/80 , C08G18/83 , C08G59/32
Abstract: Compounds having both s-triazine units and epoxide groups present are prepared by reacting an epoxide containing an isocyanate-reactive group with a triisocyanate corresponding to the formula: in which X is as defined herein. These reactants are used in quantities such that the equivalent ratio of isocyanate groups to isocyanate-reactive groups is maintained at less than or equal to 1 to 1. The compounds thus produced are particularly useful as reactive cross-linkers in the production of polyurethanes and polyepoxides.
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公开(公告)号：DE3266557D1
公开(公告)日：1985-10-31
申请号：DE3266557
申请日：1982-07-23
Applicant: BAYER AG
Inventor： KOPP RICHARD DR , GROGLER GERHARD DR , REIFF HELMUT DR , DIETERICH DIETER DR
IPC: C08G18/00 , C07C67/00 , C07C241/00 , C07C265/14 , C07D295/26 , C08G18/77 , C07C143/78
Abstract: Diisocyanates corresponding to the formula in which R1, R2, R3, R4, R5 and R6 (an isocyanate-containing radical) are as defined herein are made by several processes. These diisocyanates may be made by phosgenating the diamine in which the diisocyanate is based. They may also be produced by treating the bis-urethane of the tertiary alcohol corresponding to the diisocyanate with phosgene. Such diisocyanates may also be made by treating a specific type of bis-urea with hydrogen chloride. The diisocyanates corresponding to the above-given formula are particularly useful in the production of polyurethanes having good flame-proof and mechanical properties.
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公开(公告)号：DE3167381D1
公开(公告)日：1985-01-10
申请号：DE3167381
申请日：1981-03-19
Applicant: BAYER AG
Inventor： RECKER KLAUS DR , GROGLER GERHARD DR
IPC: C08G18/00 , C08G18/08 , C08G18/10 , C08G18/32 , C08J5/08 , C08K3/34 , C08K7/02 , C08L67/00 , C08L75/00 , C08L75/04 , C08L77/00
Abstract: The instant invention is directed to a substantially solvent-free molding material, comprising (A) from 92 to 30% by weight, of an active-hydrogen containing prepolymer containing: from 0.3 to 4% by weight, based on the prepolymer, of free primary and/or secondary amino groups, from 1.5 to 10% by weight, based on the prepolymer, of urethane groups, and from 1.5 to 10% by weight, based on the prepolymer, of urea groups; (B) from 24 to 1% by weight of a polyisocyanate having a melting point above 120 DEG C.; and (C) from 5 to 69% by weight of an organic or inorganic fibrous material with a fiber length of from 0.1 to 100 mm, the equivalent ratio between NCO groups, including masked NCO groups, and active H-atoms of components (A) and (B) is between 1:1 and 1:1.75. The instant invention is also directed to a process for the production of the substantially solvent-free molding material.
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