公开(公告)号：DE3871164D1

公开(公告)日：1992-06-25

申请号：DE3871164

申请日：1988-01-08

Applicant: BAYER AG

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

IPC: C08G18/34 ,  C08G18/65 ,  C08G18/74 ,  C08G18/79 ,  C09D5/04 ,  C09D175/00 ,  C09J175/00 ,  C09K3/00

Abstract: Thixotropic agent (I), esp. for storage-stable PU reactive systems, is mfd. by reaction of uretedione gp.-contg. polyisocyanates (II) with polyfunctional carboxylic acids with at least one COOH gp. and OH gps. as required (III), pref. in a reactive reaction medium (IV). Pref. (IV) is a higher-mol. polyol, pref. a polyetherpolyol with sec. OH gps. (III) is a 2-20C aliphatic acid, pref. lactic , ricinoleic, malic, tartaric, citric, dimethylol-propionic or adipic acid. Thixotropically-modified (IV) are claimed, esp. above pref. type with mol.wt. 400-10,000. PU systems based on polyols, retarded polyisocyanates and chain-extenders, etc. as required, are made thixotropic using (I), at least 50% of the polyol component being thixotropic (IV).

公开(公告)号：AT61607T

公开(公告)日：1991-03-15

申请号：AT85109528

申请日：1985-07-29

Applicant: BAYER AG

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

IPC: C08G18/00 ,  B01J13/02 ,  C08G18/08 ,  C08G18/10 ,  C08G18/32 ,  C08G18/65 ,  C08G18/66 ,  C09D175/04

公开(公告)号：DE3571037D1

公开(公告)日：1989-07-20

申请号：DE3571037

申请日：1985-01-19

Applicant: BAYER AG

Inventor： HOMBACH RUDOLF DR ,  DOLLHAUSEN MANFRED DR ,  HESS HEINRICH DR ,  GROGLER GERHARD DR ,  KOPP RICHARD DR ,  REISCHL ARTUR DR

IPC: C08G18/80 ,  C08G18/46 ,  C08G18/50 ,  C08G18/66 ,  C08G18/70 ,  C09J175/00 ,  C09J175/04 ,  C09J175/12 ,  C09J3/16

Abstract: The present invention relates to the use of thermosetting polyurethane urea reactive adhesive compositions which are stable at ambient temperature but rapidly set at higher temperatures, wherein the adhesive comprises stabilized finely-divided polyisocyanates of retarded reactivity of which 0.1 to 25% of the NCO-groups are surface-modified and higher and/or lower molecular polyamines (optionally with polyols as additional reactive components). An important feature of these thermosetting reactive adhesive compositions is their capacity for storage at ambient temperature and their spontaneous increase in viscosity at relatively low heating temperatures which prevents the adhesive from running off during the heating period when applied to vertical surfaces.

公开(公告)号：DE3564582D1

公开(公告)日：1988-09-29

申请号：DE3564582

申请日：1985-05-06

Applicant: BAYER AG

Inventor： HESS HEINRICH DR ,  GROGLER GERHARD DR ,  KOPP RICHARD DR ,  BARNES JAMES MICHAEL

IPC: C08G18/00 ,  C08G18/08 ,  C08G18/30 ,  C08G18/32 ,  C08G18/70 ,  C08G18/72 ,  C08G18/80 ,  C09D175/00

Abstract: The present invention is directed to a process for the production of suspensions of finely-divided polyisocyanates which are obtainable by the surface reaction with from 0.1 to 25 equivalent percent of reactive group per NCO of stabilizers in relatively high molecular weight polyols and/or relatively high molecular weight polyamines having molecular weights from 400 to 6,000 optionally with addition of lower molecular weight polyols and/or aromatic amines having molecular weights of from 60 to 399, which are characterized in that unreacted quantities of stabilizers in the suspension are subsequently partially or completely deactivated by addition of substances having an acylating and/or neutralizing and/or alkylating effect and/or adsorbing effect as "deactivators". In particular, mono- and/or polyisocyanates are used as "deactivators". Deactivated suspensions obtainable in this way do not exhibit rising thickening temperatures during the production of polyurethanes, in particular in large-volume shaped articles. The present invention also relates to deactivated suspensions obtainable by the present process and to the use thereof for polyurethane production.

公开(公告)号：DE3563357D1

公开(公告)日：1988-07-21

申请号：DE3563357

申请日：1985-01-23

Applicant: BAYER AG

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

IPC: C08G18/00 ,  C08G18/08 ,  C08G18/62 ,  C08G18/70 ,  C08G18/80 ,  C08K9/04 ,  C08L1/00 ,  C08L27/00 ,  C08L27/06 ,  C08L67/00 ,  C08L75/00 ,  C09D7/12 ,  C09D127/06 ,  C09D175/00 ,  D06N3/06 ,  C09D3/74

Abstract: The invention relates to novel compositions for coating purposes comprising (A) polyvinyl plastisols, (B) surface modified, finely divided, stabilized polyisocyanates with retarded reactivity, in which 0.1 to 25 equivalents-% of the isocyanate groups of the unstabilized polyisocyanate have been deactivated on the surface, preferably by a reaction with polyamines, hydrazine, alkylhydrazines, polyhydrazide compounds and/or selected amidine and/or guanidine compounds; and (C) plasticizers and/or lightly branched, relatively high molecular weight polyhydroxyl compounds having melting points below 60 DEG C. and compatible with PVC plastisol. The invention also relates to the use of these storage stable but heat curable mixtures as primers for PVC coatings on plastics, foils, textile sheet products or filaments and as primer coats for flocking.

公开(公告)号：DE3627078A1

公开(公告)日：1988-02-18

申请号：DE3627078

申请日：1986-08-09

Applicant: BAYER AG

Inventor： PILGER FRIEDHELM DR ,  KOPP RICHARD DR ,  GANSTER OTTO DR

IPC: B29C33/56 ,  B29C33/60 ,  C08K5/098 ,  C08K5/16 ,  C08L75/00 ,  C08L75/04 ,  C08G18/08 ,  C08G18/14 ,  C08J5/00

Abstract: A process for the production of optionally foamed moldings having a compact surface by the reaction in closed molds of a mixture of (a) organic polyisocyanates, (b) compounds containing isocyanate-reactive groups and having a molecular weight of 62 to about 10,000 and (c) mold release agents based on salts of (i) saturated or unsaturated aliphatic or cycloaliphatic carboxylic acids or carboxylic acid mixtures containing (on a statistical average) at least 8 carbon atoms per molecule and (ii) tertiary amines, characterized in that the release agents (c) used are salts in which the amine component (ii) is based on tertiary monoamines or mixtures of tertiary monoamines corresponding to the following formula in which R1 represents a saturated or unsaturated aliphatic hydrocarbon radical containing at least 12 carbon atoms and R2 and R3 may be the same or different and represent saturated or unsaturated, preferably saturated, aliphatic hydrocarbon radicals containing from 1 to 18, preferably from 1 to 4 carbon atoms, more preferably, methyl groups and/or C2-C40 hydroxyalkyl radicals optionally containing ether bridges.

公开(公告)号：DE3466881D1

公开(公告)日：1987-11-26

申请号：DE3466881

申请日：1984-12-27

Applicant: BAYER AG

Inventor： RASSHOFER WERNER DR ,  KOPP RICHARD DR ,  PAUL REINER DR ,  SEEL KLAUS DR ,  GANSTER OTTO DR

IPC: C08G18/00 ,  C08G18/10 ,  C08G18/32 ,  C08G18/48 ,  C08G18/78 ,  C08G18/80 ,  C07C125/06

Abstract: Urethane-modified polyisocyanates having an NCO-content of from 5 to 45 wt. % are made by reacting an organic polyisocyanate or mixture of polyisocyanates having an NCO-content of from 30 to 50 wt. % with an organic polyhydroxyl compound or mixtures of polyhydroxyl compounds. The organic polyhydroxyl compound must include at least 10 hydroxyl equivalent percent of an alkoxylation product of a bisphenol corresponding to a specified formula containing two alcoholic hydroxyl groups and having an OH number of from 112 to 389. The reactants are employed in quantities such that the NCO:OH equivalent ratio is from 2:1 to 50:1. The urethane-modified polyisocyanates of the present invention are particularly useful in the production of polyurethanes by the isocyanate polyaddition process.

公开(公告)号：DE3523204A1

公开(公告)日：1987-01-02

申请号：DE3523204

申请日：1985-06-28

Applicant: BAYER AG

Inventor： KOPP RICHARD DR ,  GROEGLER GERHARD DR ,  KOENIG KLAUS DR ,  SCHMIDT MANFRED DR

IPC: C07C67/00 ,  C07C201/00 ,  C07C201/12 ,  C07C205/06 ,  C07C205/12 ,  C07C79/10 ,  C07C79/12

Abstract: 4,4'-dinitrodibenzyls are prepared by reaction of 4-nitrotoluenes, in the presence of an organic solvent and/or diluent, with an alkali metal-alcoholate and/or an alkaline earth metal alcoholate, and subsequent treatment of the reaction mixture with an aqueous solution of hypohalous acids and/or their salts or with chlorine, bromine or an aqueous solution of hydrogen peroxide and/or its salts, or with organic or inorganic peracids and/or their salts.

公开(公告)号：DE3429149A1

公开(公告)日：1986-02-20

申请号：DE3429149

申请日：1984-08-08

Applicant: BAYER AG

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

IPC: C08G18/00 ,  B01J13/02 ,  C08G18/08 ,  C08G18/10 ,  C08G18/32 ,  C08G18/65 ,  C08G18/66 ,  C09D175/04 ,  C08G18/80

Abstract: This invention relates to a process for the production of solid polyamines stabilized by a polyadduct covering and showing retarded reactivity comprising reacting (1) one or more solid organic polyamines in particulate form, said polyamines containing at least two primary and/or secondary amino groups and having melting points above 50 DEG C., and (2) from 0.1 to 25 equivalent % of isocyanate per amine equivalent of a water insoluble, difunctional and/or higher functional polyisocyanate, said reaction being conducted at a temperature below the melting point of said solid polyamine, and being conducted in the presence of (3) a liquid medium selected from the group consisting of (a) organic compounds containing two or more hydroxy groups and having molecular weights of from 62 to 10,000, (b) plasticizers, (c) water, and (d) mixtures thereof to form a suspension of polyadduct-covered stabilized polyamines in the liquid medium.

公开(公告)号：DE3418429A1

公开(公告)日：1985-11-21

申请号：DE3418429

申请日：1984-05-18

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 ,  C09D3/72

Abstract: This invention relates to the production of polymer-coated, finely divided polyisocyanates by mixing (A) solid, finely divided polyisocyanates (preferably dimeric diisocyanates or urea diisocyanates) with (B) polyisocyanates differing in composition from those mentioned under (A) (preferably (cyclo) aliphatic polyisocyanates, such as biuretized diisocyanates or trimers or NCO-prepolymers), in quantities of from 0.05 to 50 parts by weight, and preferably in quantities of from 0.2 to 25 parts by weight, of (B) per 100 parts by weight of (A). The solid polyisocyanate particles surface-modified by covering with polyisocyanates (B) and then reacted with (D) isocyanate-reactive compounds containing reactive hydrogen atoms or with compounds free from active hydrogen atoms which form polymers with isocyanates in sub-equivalent to substantially equivalent quantities (preferably 0.5 to 1.0 equivalent per NCO-equivalent), in the presence of (C) inert, weakly polar organic solvents, (for example aliphatic hydrocarbons or relatively long chain dialkyl ethers), plasticizers, polyols or aromatic polyamines. A polymer coating is formed by the reaction of (B) and (D) around the solid polyisocyanate cores (A). The present invention also relates to the polyisocyanate particles covered with polyisocyanates (B) on the surface of the solid polyisocyanates (A) and, in particular, to the foreign-polymer coated, finely particulate polyisocyanates of retarded reactivity obtained by reaction with (D). The present invention also relates to the use of the polyisocyanate-covered and, more particularly, polymer-coated polyisocyanates, optionally in suspension in polyols and/or plasticizers, for the production of polyurethanes, more particularly in one-component polyurethane reactive systems having a long shelf life and a high thickening point.