Clariant Produkte (deutschland) Gmbh

Lariant Produkte (deutschland) Gmbh

Anton Strasser

Klaus Xaver Poellmann

Martin Glos

Reinhard Vybiral

Eckart Kraemer

Rainer Wagner

The invention relates to copolymers of formula (I) wherein Ris hydrogen, a C-C-alkyl radical or C-C-alkenyl radical which can also contain heteroatoms, an acid group or an aliphatic or aromatic group comprising 1-50 carbon atoms, including an acid group, Rand Rindependently represent hydrogen, methyl and/or ethyl, n ranges from 0-100, and m ranges from 3 to 30, and k ranges from 1-200, and A is hydrogen, an acid group, a C-C-alkyl radical or a C-C-alkenyl radical which can also contain heteroatoms, an aliphatic or aromatic group comprising 1-50 carbon atoms, including an acid group, or a copolymer unit of formula (II), wherein Ris hydrogen, a C-C-alkyl radical or a C-C-alkenyl radical which can also contain heteroatoms, an acid group or an aliphatic or aromatic group comprising 1-50 carbon atoms, including an acid group, Ris hydrogen, methyl and/or ethyl, x ranges from 0 to 100, and y ranges from 3-30, wherein, if A is formula (2), Rrepresents hydrogen or an acid group. 

Copolymers containing styrene oxide and use thereof as emulsifiers and dispersing agents

The invention relates to a method for producing pure alpha-alkoxy-&#x3a9;-hydroxy-polyalkylene glycols, creating small impurities of the product on high-molecular a-&#x3a9;-di-hydroxy-polyalkylene glycols. The method is based on the use of high-boiling initiator alcohols of the following general structure R&#x2014;(OCHCHR)&#x2014;OH wherein Rrepresents an alkyl radical comprising between 1 and 4 C atoms, preferably R&#x2550;CH, k represents a number between 1 and 10, preferably between 1 and 4, and R represents H, CHor an alkyl radical comprising between 2 and 4 C atoms, preferably R&#x2550;H, CH. The use of the cited initiator alcohols enables the mixture of a basic catalyst and an initiator alcohol to be dried in such a way that it has a very low water content, and thus to produce very low concentrations of unwanted a-&#x3a9;-di-hydroxy-polyalkylene glycol impurities.

Method for producing pure &#x3b1;-alkoxy-&#x3a9;-hydroxy-polyalkylene glycols

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Altoetting, Germany

Anton Strasser