US4070320A — Process for the production of film forming synthe…

Claim 1

Independent Claim 166 words

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° up to about 100° 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 70° to about 115° C. said methylolated 5,5-dialkylhydantoin in the presence of from about 0.2 to about 2.5 moles of a mixture of urea and a diamine, per mole of said hydantoin.

Claim 2

Dependent Claim 166 words

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° up to about 100° 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 70° to about 115° C. said methylolated 5,5-dialkylhydantoin in the presence of from about 0.2 to about 2.5 moles of a mixture of urea and a diamine, per mole of said hydantoin.

Claim 3

Dependent Claim 13 words

Process as claimed in claim 1 wherein said dialkylhydantoin is a methylolated 5,5-dimethylhydantoin.

Claim 4

Dependent Claim 12 words

Process as claimed in claim 1 wherein said diamine is ethylene diamine.

Claim 5

Dependent Claim 26 words

Process claimed in claim 1, wherein said urea is present in an amount of from about 0.3 to about 2 moles per mole of said hydantoin.

Claim 6

Dependent Claim 27 words

Process as claimed in claim 1 wherein said diamine is present in an amount of from about 0.3 to about 0.5 mole per mole of said hydantoin.

Claim 7

Dependent Claim 33 words

Process as claimed in claim 1 wherein condensation is carried out in a reaction diluent selected from the group consisting of a lower alkanol containing from 1 to 4 carbon atoms and benzene.

Claim 8

Dependent Claim 25 words

Process as claimed in claim 6 wherein said lower alkanol is at least one member selected from the group consisting of methanol, isopropanol and butanol.

Claim 9

Dependent Claim 21 words

Process as claimed in claim 1 wherein the methylolation reaction is carried out in the presence of a lower alkanol solvent.

Claim 10

Dependent Claim 21 words

Process as claimed in claim 1 wherein the methylolation reaction is carried out in the presence of benzene as a solvent.

Claim 11

Dependent Claim 16 words

Process as claimed in claim 8 wherein said solvent is removed from the resulting reaction products.

Claim 12

Dependent Claim 16 words

Process as claimed in claim 9 wherein said solvent is removed from the resulting reaction products.

Claim 13

Dependent Claim 121 words

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 from about 0.2 to about 2.5 moles of a mixture of urea and a diamine, per mole of said hydantoin at a temperature in the range of from about 55° up to about 100° 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.

Claim 14

Dependent Claim 121 words

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 from about 0.2 to about 2.5 moles of a mixture of urea and a diamine, per mole of said hydantoin at a temperature in the range of from about 55° up to about 100° 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.

Claim 15

Dependent Claim 67 words

Process as claimed in claim 12 wherein following removal of said water, there is added to the resulting reaction product a lower alkanol and a minor amount of a mineral acid, and the resulting mixture is further reacted at a temperature of from about 68° to about 113° C., for from about 2 to about 3 hours, and the resulting further reacted product is concentrated under vacuum.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1981-01-23	1981-07-25	1982-01-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1985-01-23	1985-07-25	1986-01-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1989-01-23	1989-07-25	1990-01-24	$7700.00	Window Closed / Lapsed

Process for the production of film forming synthetic resins for hair fixatives

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