Process for the production of film forming synthetic resins for hair fixatives
AssigneeDeutsche Texaco Aktiengesellschaft
InventorsHans-Albrecht Meyer-Stoll, Johannes Wollner, Hans-Heinz Schittek
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Abstract
Process for the production of film forming synthetic resins for hair fixative compositions by reacting a methylolated 5,5-dialkylhydantoin containing 1-5 carbon atoms in each alkyl group at an elevated temperature in the presence of a bifunctional acid amide and/or amine. Hair fixative compositions containing 2-10% by weight of the resin product as the major or sole resin compound.
Claims12
Process for the production of a water soluble, film-forming resin product having a molecular weight in the range of from about 700 up to about 3000 or more for a hair fixative composition, which comprises reacting a 5,5-dialkylhydantoin wherein each alkyl group thereof contains from 1 to 5 carbon atoms with aqueous formaldehyde solution in the mole ratio of from about 1.5 to about 2.5 moles of formaldehyde per mole of said hydantoin, at a temperature in the range of from about 55.degree. C. up to about 100.degree. C. and a pH in the range of from about 6 up to about 11 and recovering the resulting methylolated 5,5-dialkylhydantoin from the resulting reaction products by removal of from about 50 to 100% of water, then reacting at an elevated temperature in the range of from about 70.degree. C to about 115.degree. C. said methylolated 5,5-dialkylhydantoin in the presence of from about 0.2 to about 2.5 moles of salicylic acid amide per mole of said hydantoin.
Process for the production of a water soluble, film-forming hair fixative resin having a molecular weight in the range of from about 700 up to about 3,000 or more which comprises reacting 5,5-dimethylhydantoin with aqueous formaldehyde solution in the mole ratio of from about 1.5 up to about 2.5 moles of formaldehyde per mole of said hydantoin, and from about 0.2 to about 2.5 moles of salicylic acid amide per mole of said hydantoin, at a temperature in the range of from about 55.degree. C. up to about 100.degree. C., and at a pH in the range of from about 6 up to about 11, and removing at least a major portion of water from the resulting reaction product.
Dependencies are inferred from the claim text.