Polymers of self- and hydroxyl reactive formaldehyde-free cyclic hemiamidal and hemiamide ketal crosslinking monomers.

摘要

A compound represented by the following formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="19" wi="56" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein
<UnorderedLists id="ula01" listStyle="none"><ListItem>R is a C<Sub>3</Sub>-C<Sub>21</Sub> olefinically unsaturated organic radical having functionality which renders the nitrogen atom electron deficient, the olefinic unsaturation functionality being polymerizable,</ListItem><ListItem>R' is hydrogen or a C<Sub>1</Sub>-C<Sub>4</Sub> alkyl radical, or</ListItem><ListItem>R and R' together with the nitrogen atom can form an olefinically unsaturated 5 to 7-member ring which has functionality that renders the nitrogen atom electron deficient and the olefinic unsaturation functionality is polymerizable,</ListItem><ListItem>R<Sup>2</Sup> and R<Sup>3</Sup> are hydrogen, a C<Sub>1</Sub>-C<Sub>4</Sub> alkyl or acyl radical, or</ListItem><ListItem>R<Sup>2</Sup> and R<Sup>3</Sup> together are a C<Sub>2</Sub>-C<Sub>4</Sub> alkylene group,</ListItem><ListItem>R<Sup>4</Sup> is hydrogen or a C<Sub>1</Sub>-C<Sub>4</Sub> alkyl, acyl, ester, amide or acid group, and</ListItem><ListItem>n is an integer from 1 to 10, provided n is not 1 when R is (meth)acryloyl, R<Sup>2</Sup> and R<Sup>3</Sup> are methyl and R' and R<Sup>4</Sup> are hydrogen.</ListItem></UnorderedLists>

Under acidic conditions the above compounds in which R' is hydrogen afford cyclic hemiamidals and hemiamide ketals of the following formula:
<Chemistry id="chema02" num="0002"><Image id="ia02" he="24" wi="37" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>

The dialkyl acetal and ketal compounds and the cyclic hemiamidal and hemiamide ketal compounds can be homopolymerized or polymerized with other copolymerizable monomers.