Stable polymer gels
AssigneeBayer Aktiengesellschaft
InventorsDietmar Schapel, Kuno Wagner, Hanns P. Muller, Manfred Dahm
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Abstract
This invention is directed to gels which are stable in storage, comprising a polymer matrix, a liquid dispersing agent embedded therein and optionally fillers or additives, characterized in that said polymer matrix is a polycondensation product of aldehydes and aminoplast-formers, at least 30% by weight of the aminoplast-formers having a molecular weight of between 200 and 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group.
Claims12
Gels which are stable in storage, comprising a polymer matrix, a liquid dispersing agent embedded therein and optionally fillers or additives, characterized in that said polymer matrix is a polycondensation product from aldehydes and aminoplast-formers, at least 30% by weight of the aminoplast-formers having a molecular weight of between 200 and 10,000 and containing at least one functional group selected from the group consisting of ether, thioether, acetal, ester, urethane and carbonate groups.
A process for the preparation of gels, comprising:
- polycondensing aldehydes and N-alkylol compounds of aminoplast-formers, at least 30% by weight having a molecular weight of 200 to 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group, by means of an acid catalyst in the presence of dispersing agents and optionally fillers or additives.
A process for producing carriers for perfumes, comprising adding perfumes during formation of a gel formed by polycondensing aldehydes and N-alkylol compounds of aminoplast-formers, at least 30% by weight having a molecular weight of 200 to 10,000 and containing at least one ether, thioether, acetal, ester, urethane and/or carbonate group, by means of an acid catalyst in the presence of dispersing agents and optionally fillers or additives.
Dependencies are inferred from the claim text.