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公开(公告)号：DE4211454A1
公开(公告)日：1993-10-07
申请号：DE4211454
申请日：1992-04-06
Applicant: DEGUSSA
Inventor： PIANA HERMANN DR , HUTHMACHER KLAUS DR
Abstract: The invention relates to the use of isophorondiamine isomer mixtures comprising more than 40 %, preferably more than from 50 to 70 %, of the trans-isomer and less than 60 %, preferably less than from 50 to 30 %, of the cis-isomer, as a reaction component in polyaddition resins from the series consisting of epoxy resins, polyurethane resins and polyurea resins. As curing agents in epoxy resins, the isomer mixtures give, compared with previously known isomer mixtures, an extended pot life at the same time as a reduced maximum curing temperature, and thus fewer shrinkage problems. The isomer mixtures are also suitable as an amine component of reduced reactivity for chain extension of polyurethane/polyureas.
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公开(公告)号：DK0493658T3
公开(公告)日：1993-11-29
申请号：DK91118027
申请日：1991-10-23
Applicant: DEGUSSA
Inventor： WERLE PETER DR , TRAGESER MARTIN , PIANA HERMANN DR
Abstract: The direct dosing of aqueous solutions with acrolein as a microbiocide is problematic because of the associated laborious safety measures and the hitherto known use of reaction mixtures from the deacetalisation has proven not to be very economical. … According to the invention, aqueous solutions can be dosed in a simple, safe and economical manner with acrolein at a sufficient concentration level to be active as a biocide by cleaving acrolein acetals in the aqueous phase in the presence of a strongly acid deacetalisation catalyst into acrolein and the alcohol component, continuously removing the resulting acrolein from the deacetalisation mixture and transferring the acrolein into the aqueous solution to be dosed using an inert gas stream or a liquid jet pump with the aqueous solution to be dosed as the jet liquid.
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公开(公告)号：DE59100347D1
公开(公告)日：1993-10-07
申请号：DE59100347
申请日：1991-10-23
Applicant: DEGUSSA
Inventor： WERLE PETER DR , TRAGESER MARTIN , PIANA HERMANN DR
Abstract: The direct dosing of aqueous solutions with acrolein as a microbiocide is problematic because of the associated laborious safety measures and the hitherto known use of reaction mixtures from the deacetalisation has proven not to be very economical. … According to the invention, aqueous solutions can be dosed in a simple, safe and economical manner with acrolein at a sufficient concentration level to be active as a biocide by cleaving acrolein acetals in the aqueous phase in the presence of a strongly acid deacetalisation catalyst into acrolein and the alcohol component, continuously removing the resulting acrolein from the deacetalisation mixture and transferring the acrolein into the aqueous solution to be dosed using an inert gas stream or a liquid jet pump with the aqueous solution to be dosed as the jet liquid.
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公开(公告)号：DE19500386A1
公开(公告)日：1996-07-11
申请号：DE19500386
申请日：1995-01-09
Applicant: DEGUSSA
Inventor： PIANA HERMANN DR , HASKERL THOMAS DR , TROLTSCH INGO , ARNTZ DIETRICH DR
IPC: C08F2/18 , C08F2/24 , C08F214/00 , C08F216/34 , C08F216/38
Abstract: The invention calls for structural units of formula (I) (in which R is H or straight-chain or branched-chain C1-C4 alkyl) produced according to the emulsion or suspension process by the addition of vinyl-group-containing acetals of the formula (II) in which R is as defined above and R and R are as defined in the description. This avoids the dangers of having to work with free alpha , beta -unsaturated aldehydes, the aldehydes are not liberated from their storage forms before they are required for the polymerization and a greater proportion of aldehyde groups are incorporated in the copolymers than when free aldehydes are used. The invention also relates to the use of the polymerizates produced according the emulsion or suspension polymerization process as acrolein-modified leather-coating lacquers.
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公开(公告)号：ES2059014T3
公开(公告)日：1994-11-01
申请号：ES91118027
申请日：1991-10-23
Applicant: DEGUSSA
Inventor： WERLE PETER DR , TRAGESER MARTIN , PIANA HERMANN DR
Abstract: The direct dosing of aqueous solutions with acrolein as a microbiocide is problematic because of the associated laborious safety measures and the hitherto known use of reaction mixtures from the deacetalisation has proven not to be very economical. … According to the invention, aqueous solutions can be dosed in a simple, safe and economical manner with acrolein at a sufficient concentration level to be active as a biocide by cleaving acrolein acetals in the aqueous phase in the presence of a strongly acid deacetalisation catalyst into acrolein and the alcohol component, continuously removing the resulting acrolein from the deacetalisation mixture and transferring the acrolein into the aqueous solution to be dosed using an inert gas stream or a liquid jet pump with the aqueous solution to be dosed as the jet liquid.
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Patent Agency Ranking6.发明专利
公开(公告)号：AT93820T
公开(公告)日：1993-09-15
申请号：AT91118027
申请日：1991-10-23
Applicant: DEGUSSA
Inventor： WERLE PETER DR , TRAGESER MARTIN , PIANA HERMANN DR
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公开(公告)号：DE19505576A1
公开(公告)日：1995-08-24
申请号：DE19505576
申请日：1995-02-18
Applicant: DEGUSSA
Inventor： HIRT PETER DR , KUEHL GILBERT DR , PIANA HERMANN DR , TRAUB HANSJOERG DR , HERLINGER HEINZ PROF DR
Abstract: A process is claimed for dyeing polytrimethylene terephthalate (PTMT) fibres with aq. dispersion dyes at or below the b.pt. of the dye bath. The unpressurised, carrier-free process comprises: (a) starting at 20-50 deg C, (b) increasing the bath temp. within 20-90 (pref. 45) mins. to the b.pt. or to a temp. \}20 deg C below the b.pt., (c) continuing dyeing at this temp. for \-20 (pref. 30-90) mins., and (d) cooling to 20-50 deg C, pref. at 1 deg C/min., so that \-95 wt.% of the dye is absorbed by the fibres and the dye penetrates to a depth of \-5% of the fibre dia..
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公开(公告)号：DE19608116A1
公开(公告)日：1996-09-19
申请号：DE19608116
申请日：1996-03-02
Applicant: DEGUSSA
Inventor： PIANA HERMANN DR
IPC: C09D161/22 , C09D161/20 , C09D167/00 , C08G63/12 , C08G63/127 , C08G63/137 , C08G63/20 , C08G63/78 , C09D161/32
Abstract: Heat-curable coating materials (I), pref. for the prodn. of hard and flexible coatings on metal substrates, contg. (A) 10-50 wt% polyester(s) obtd. by esterifying a mixt. of (a) polycarboxylic acids comprising (aa) 40-90 mole% aromatic polycarboxylic acid and (ab) 60-10 mole% aliphatic and/or cycloaliphatic polycarboxylic acid, in which, if diacids are used, at least 50 mole% thereof consists of cyclic dicarboxylic acids, with (b) polyols comprising (ba) 30-85 mole% neopentyl glycol and (bb) 15-50 mole% 1,3-propanediol, in which, if diols are used, at least 30 mole% thereof has aliphatic side chains, such that the amts. of (a) and (b) satisfy the equation X = n1 - n2(F - 2)/n2 n1 = no. of moles of (b); n2 = no. of moles of (a); F = average value of the molar functionality of (a); X = 1.05-1.5; (B) 5-40 wt% polycondensate which is partly etherated with monoalcohol, in the form of (a) melamine-formaldehyde (MF) resin with a M:F mole ratio of (1:4.5)-(1:6), (b) benzoguanamine-formaldehyde (BF) resin with a B:F mole ratio of (1:2.5)-(1:4) and/or (c) urea-formaldehyde (UF) resin with a U:F mole ratio of (1:2.5)-(1:6); (C) 15-50 wt% organic solvent as used in paint prodn.; (D) 0-40 wt% pigments and (E) opt. conventional paint additives in amts. of up to 100 wt% based on 100 wt% (A)-(D). Also claimed is a process for the prodn. of polyester (A) by heating the starting materials with stirring, with distn. of reaction water until the mixt. has an acid no. of less than 20, and then diluting with organic solvent until the soln. has an OH no. of more than 30, pref. more than 35.
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公开(公告)号：DE4211454C2
公开(公告)日：1995-11-02
申请号：DE4211454
申请日：1992-04-06
Applicant: DEGUSSA
Inventor： PIANA HERMANN DR , HUTHMACHER KLAUS DR
Abstract: The invention relates to the use of isophorondiamine isomer mixtures comprising more than 40 %, preferably more than from 50 to 70 %, of the trans-isomer and less than 60 %, preferably less than from 50 to 30 %, of the cis-isomer, as a reaction component in polyaddition resins from the series consisting of epoxy resins, polyurethane resins and polyurea resins. As curing agents in epoxy resins, the isomer mixtures give, compared with previously known isomer mixtures, an extended pot life at the same time as a reduced maximum curing temperature, and thus fewer shrinkage problems. The isomer mixtures are also suitable as an amine component of reduced reactivity for chain extension of polyurethane/polyureas.
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公开(公告)号：DE4038471A1
公开(公告)日：1992-06-04
申请号：DE4038471
申请日：1990-12-03
Applicant: DEGUSSA
Inventor： WERLE PETER DR , TRAGESER MARTIN , PIANA HERMANN DR
Abstract: The direct dosing of aqueous solutions with acrolein as a microbiocide is problematic because of the associated laborious safety measures and the hitherto known use of reaction mixtures from the deacetalisation has proven not to be very economical. … According to the invention, aqueous solutions can be dosed in a simple, safe and economical manner with acrolein at a sufficient concentration level to be active as a biocide by cleaving acrolein acetals in the aqueous phase in the presence of a strongly acid deacetalisation catalyst into acrolein and the alcohol component, continuously removing the resulting acrolein from the deacetalisation mixture and transferring the acrolein into the aqueous solution to be dosed using an inert gas stream or a liquid jet pump with the aqueous solution to be dosed as the jet liquid.
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