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公开(公告)号：DE2546782A1
公开(公告)日：1977-04-21
申请号：DE2546782
申请日：1975-10-18
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR
IPC: C08F18/04
Abstract: Prodn. of aq. polyvinyl ester dispersion by homopolymerisation of vinyl ester (I) or copolymerisation with modifying comonomers (II) in aq. dispersion in the absence of a protective colloid and in the presence of an anionic emulsified. The pH is kept constant at 4-6.8, pref. 4.5-6.2 throughout polymerisation. The pH is maintained by addn. of alkali or buffer. Prods. are binders for paints, paper sizes etc. Fine dispersions are obtd., which are stable on storage and towards shear and are compatible with finely-divided inorganic pigments and extenders.
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公开(公告)号：CH528563A
公开(公告)日：1972-09-30
申请号：CH803969
申请日：1969-05-27
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR
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公开(公告)号：DE59303221D1
公开(公告)日：1996-08-22
申请号：DE59303221
申请日：1993-03-22
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR , RINNO HELMUT DR , HUTH HANS-ULLRICH DR
Abstract: Aqueous polymer dispersions containing vinyl ester polymers or vinyl ester copolymers and having reduced contents of undesired residual monomeric vinyl esters and possibly acetaldehyde as a consequence of the preparation are prepared from corresponding starting dispersions, as obtainable by conventional polymerisation or copolymerisation methods from ethylenically unsaturated monomers, by selective alkaline hydrolysis (saponification) of the alkaline-hydrolysable residual monomeric vinyl esters in the dispersions and preferably simultaneous removal of the acetaldehyde and unhydrolysed residual monomeric vinyl esters from the aqueous dispersions by distillation. The residual-monomer-free polymer dispersions are used as binders in low-emission or emission-free aqueous preparations, for example for paints, coatings, plasters, adhesives, paper sizes (sizing agents), fibre non-woven binders, textile auxiliaries, etc, in particular for interior applications or in closed spaces.
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公开(公告)号：DE2651048A1
公开(公告)日：1978-05-18
申请号：DE2651048
申请日：1976-11-09
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR
Abstract: Emulsifier-containing plastics dispersions which serve as a binder for dispersion paints, should contain polymers forming a film at room temperature and having a high wet adhesion. Suitable polymers are prepared by polymerization of olefinically unsaturated monomers initiated by free radical-forming agents, especially in the presence of an emulsifier. As emulsifier there is used a salt of an acyl ester of the hydroxymethane-phosphonic acid. The emulsifier may remain in the dispersion ready-for-use without involving disadvantages for the wet adhesion.
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公开(公告)号：CH506581A
公开(公告)日：1971-04-30
申请号：CH101269
申请日：1969-01-23
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR
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Patent Agency Ranking
公开(公告)号：AT140463T
公开(公告)日：1996-08-15
申请号：AT93104643
申请日：1993-03-22
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR , RINNO HELMUT DR , HUTH HANS-ULLRICH DR
Abstract: Aqueous polymer dispersions containing vinyl ester polymers or vinyl ester copolymers and having reduced contents of undesired residual monomeric vinyl esters and possibly acetaldehyde as a consequence of the preparation are prepared from corresponding starting dispersions, as obtainable by conventional polymerisation or copolymerisation methods from ethylenically unsaturated monomers, by selective alkaline hydrolysis (saponification) of the alkaline-hydrolysable residual monomeric vinyl esters in the dispersions and preferably simultaneous removal of the acetaldehyde and unhydrolysed residual monomeric vinyl esters from the aqueous dispersions by distillation. The residual-monomer-free polymer dispersions are used as binders in low-emission or emission-free aqueous preparations, for example for paints, coatings, plasters, adhesives, paper sizes (sizing agents), fibre non-woven binders, textile auxiliaries, etc, in particular for interior applications or in closed spaces.
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公开(公告)号：DE3803450A1
公开(公告)日：1989-08-17
申请号：DE3803450
申请日：1988-02-05
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR , LONITZ MICHAEL DR , BRAUN HELMUT DR
IPC: C08L31/02 , C04B41/49 , C08F6/00 , C08K5/5425 , C08L31/04 , C09D5/02 , C09D123/00 , C09D131/02 , C09D131/04
Abstract: Manufacture of low-emission polymer emulsion paints, coatings and plasters in the form of aqueous preparations based on aqueous dispersions of copolymers of olefinically unsaturated monomers wherein the pigment volume concentration (PVC) is not less than 60% and which contain water, fillers, pigments, emulsion copolymers and customary assistants, the emulsion copolymers containing from 0.05 to 2% by weight of monomer units from specific unsaturated hydrolysable organic silicon compounds and the aqueous copolymer dispersions having a minimum film-forming temperature (MFFT) of
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公开(公告)号：DE2938429A1
公开(公告)日：1981-04-09
申请号：DE2938429
申请日：1979-09-22
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR
IPC: C08F2/00 , C08F2/04 , C08F2/18 , C08F2/26 , C08F8/00 , C08F8/44 , C08F212/00 , C08F212/08 , C08L25/00 , C08L25/08 , C08L33/00 , C08L33/02 , C09D5/00 , C09D5/02 , C09D17/00 , C09K23/00 , C09K23/52 , D21H17/37 , C08L25/04 , C08J3/04
Abstract: 1. Aqueous solution or dispersion of a hydrolyzed copolymer of styrene and maleic anhydride having a molar ratio of styrene to maleic anhydride superior to 1 : 1 and a molecular weight (numerical average) of more than 400, characterized in that the copolymer has a molar ratio in the range of from 1.5 : 1 to 6 : 1 and a molecular weight of from 500 to 80 000, 1 to 60 percent of the carboxyl groups of the copolymer are neutralized, and the pH of the solution or dispersion is below 7.
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公开(公告)号：CH522701A
公开(公告)日：1972-06-30
申请号：CH724669
申请日：1969-05-12
Applicant: HOECHST AG
Inventor： NOELKEN ERNST DR
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公开(公告)号：DE1720631A1
公开(公告)日：1971-07-01
申请号：DE1720631
申请日：1967-03-10
Applicant: HOECHST AG
Inventor： FISCHER EDGAR DR , NOELKEN ERNST DR
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