Method of modifying polyacrylates for obtaining high molecular polymers
AssigneeWaltech, AG
InventorIgor Gubych
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Abstract
The present invention relates to the field of acrylic polymers and in particular to their modification with the purpose of the formation of compounds of still higher molecular masses. Plastic materials of the type of acrylic universal polymer (PAU), e.g. sold under the tradename “POLYGOR”, can be used as starting material. The acrylic starting material is then modified by appropriate modifier compounds. In this way modified polymers can have molecular weights in the range between 2×105 and 15×107 a.u. and are water-soluble. This allows to use them as flocculation, coagulation, ion-exchange means and as additives to surface active agents for raising their washing and foaming capabilities.
Claims32
A method of forming high-molecular polymers starting from gel-forming water-insoluble polymers, of the acrylic type, comprising the steps of:
- a):
- dissolving an amount of at least one initiator-modifier compound of the general formula of one of EHaO, EHaO2, EHaO3 or EHaO4, wherein E comprises one of hydrogen, an alkali metal or an alkali earth metal and Ha comprises halogen, in an aqueous solution at-a starting temperature;
- b):
- adding a gel-forming water insoluble polymer to the solution and mixing it therewith to form macro-aggregates from the polymers;
- and
- c):
- modifying the macro-aggregates by at least one of heating and irradiation to form water-soluble high-molecular polymers.
(canceled)
A high molecular mass acrylic polymer formed by the steps comprising:
- dissolving an amount of at least one initiator-modifier compound of the general formula of one of EHaO, EHaO2, EHaO3 or EHaO4, wherein E comprises one of hydrogen, an alkali metal or an alkali earth metal and Ha comprises halogen, in an aqueous solution at a starting temperature;
- adding a gel-forming water insoluble polymer to the solution and mixing it therewith to form macro-aggregates from the polymers;
- and
- modifying the macro-aggregates by at least one of heating and irradiation to form water-soluble high-molecular polymers.
Dependencies are inferred from the claim text.