Tenneco Chemicals, Inc.

Michael J Caudwell

Ian R Hiskens

David C Johnson

A sizing agent for use in paper-making comprises an aqueous emulsion of at least one compound of the formulae ##STR1## wherein each R.sup.1 represents a hydrophobic group selected from alkyl, alkenyl, aralkyl or aralkenyl groups, where the R.sup.1 groups in either formula may be the same or different and together they contain from 25 to 60 carbon atoms. The sizing agent can be used for either internal or surface sizing, and is effective in the absence of, or in the presence of, a retention aid.

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Bristol, United Kingdom

Michael J Caudwell