摘要:
The invention relates to compound antifoams comprising alkoxylated partial esters--using from 3 to 60 mol of propylene oxide with or without from 1 to 10 mol of styrene oxide and/or from 1 to 10 mol of butylene oxide--of oligoglycerols, obtainable by condensation of 2 to 20 glycerol molecules, with C.sub.8 to C.sub.22 fatty acids and inorganic or organic solids for defoaming polymer dispersions and aqueous coating systems.
摘要:
The invention relates to the use of water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers of the general average formula wherein the variables are described herein as defoaming agents for aqueous media. This invention also provides for defoaming compositions comprising said water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers.
摘要:
The invention relates to the use of water-insoluble polyoxyalkylene-polysiloxane block copolymers of the general average formula wherein the variables and indices are described herein as defoaming agents for aqueous media. This invention also provides for defoaming compositions comprising said water-insoluble polyoxyalkylene-polysiloxane block copolymers as well as coating materials, printing inks and cooling lubricants containing the inventive defoaming compositions.
摘要:
The invention relates to the use of water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers of the general average formula wherein the variables and indices are described herein as defoaming agents for aqueous media. This invention also provides for defoaming compositions comprising said Water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers.
摘要:
Polysiloxane-polyoxyethylene-polyoxypropylene triblock copolymers having the general formula: ##STR1## as well as compounds for the defoaming of aqueous dispersion paints that are disclosed contain the copolymers as effective defoaming components.
摘要:
The invention relates to the use of water-insoluble polyoxyalkylene-polysiloxane block copolymers of the general average formula wherein the variables and indices are described herein as defoaming agents for aqueous media. This invention also provides for defoaming compositions comprising said water-insoluble polyoxyalkylene-polysiloxane block copolymers as well as coating materials, printing inks and cooling lubricants containing the inventive defoaming compositions.
摘要:
The invention relates to the use of a water-insoluble polyoxyarylene-polysiloxane block copolymers of the general average formula wherein the variables and indices are described herein as defoaming agents for aqueous media. This invention also provides for defoaming compositions comprising said water-insoluble block copolymers.
摘要:
The present invention provides a process for enzymatic preparation of acrylic esters and/or methacrylic esters of polyoxyalkylenes, and to the use thereof. The acryloyl and/or methacryloyl compounds of polyoxyalkylenes are obtainable by a process for esterifying or transesterifying acrylic and/or methacrylic acid or acrylic and/or methacrylic esters with a polyoxyalkylene of the general formula (I) wherein R1, R2, R3 and a-e are as defined in claim 1 and wherein at least one OH group is present per molecule and the sequence of the polyoxyalkylene segments (C2H4-aR2aO)b and (CcH2cO)d is arbitrary, in the presence of an enzyme which catalyzes the esterification or transesterification.
摘要翻译:本发明提供了一种用于酶制备聚氧化烯的丙烯酸酯和/或甲基丙烯酸酯的方法及其用途。 聚氧化烯的丙烯酰基和/或甲基丙烯酰基化合物可通过丙烯酸和/或甲基丙烯酸或丙烯酸和/或甲基丙烯酸酯与通式(I)的聚氧化烯酯化或酯交换的方法获得,其中R1,R2,R3和ae为 如在权利要求1中所定义的,并且其中每个分子存在至少一个OH基团,并且在催化酯化或酯交换的酶的存在下,聚氧化烯链段(C 2 H 4 -a R 2a)b和(C 1 H 8 C 10)d的序列是任意的。
摘要:
The present invention provides a process for esterifying or transesterifying acrylic acid and/or methacrylic acid or acrylic esters and/or methacrylic esters with hydroxy-functional and/or polyoxyalkylene-modified siloxane derivatives of the general formula (I) wherein R1 through R8 and v, w, x, y, and z are as defined herein and the esterification or transesterification reaction is catalyzed by an enzyme.
摘要:
The present invention relates to aqueous pigment pastes comprising hydrophobically modified polyaspartic acid derivatives as dispersants. The invention relates in particular to the use of hydrophobically modified polyaspartic acid derivatives as dispersants for preparing aqueous pigment pastes.