Sizing paper with .alpha.-hydroxycarboxylic acid

Details Sizing paper with .alpha.-hydroxycarboxylic acid Sizing paper with .alpha.-hydroxycarboxylic acid

1989-09-22

1991-11-05

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621681, 162174, 162175, 162179, D21H 1714

Patent

active

050629220

ABSTRACT:
A method for making papers which comprises: using a paper sizing agent comprising as an effective component an .alpha.-hydroxycarboxylic acid having the formula (I): ##STR1## wherein R.sup.1 is an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, ##STR2## and R.sup.2 is hydrogen atom, or an alkyl or alkenyl group having 1 to 30 carbon atoms, or a salt thereof. The paper sizing agent used in the method can exhibit the excellent sizing effect in paper making under the condition of the wide pH-range from pH 3 to pH 9, and has an excellent storage stability. Further the method is excellent in workability and high in industrial value.

REFERENCES:
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patent: 3954581 (1976-05-01), Carlin
patent: 4529762 (1985-07-01), Hoefer et al.
patent: 4673439 (1987-06-01), Takahashi et al.
Rapport et al, "The Lipid Residues in Cytolipin H*", J. Lipid Research (Apr. 1961), vol. 2, No. 2, pp. 148-151.
Chem. Ber., 87 (1954), 1058-1060.
Cooper et al, "Surface Active Properties of Biosurfactant from Corynebacterium Lepus", JAOCS (Jan. 1981), pp. 77-80.

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