US3934587A — Disposable articles having a water-permeable and …

Claim 1

Independent Claim 137 words

An article of manufacture comprising a thin sheet, one side of said sheet being water-permeable and the other side being water-repellent, wherein said water-permeable side comprises a polymeric compound having a molecular weight in excess of about 1000 and having free hydrophilic groups selected from hydroxyl and amine groups and said water-repellent side comprises the reaction product of said polymeric compound with a vapor phase mixture comprising acid chloride having the general formula ##EQU4## and aldehyde having the general formula ##EQU5## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar proportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10.

Claim 2

Dependent Claim 137 words

An article of manufacture comprising a thin sheet, one side of said sheet being water-permeable and the other side being water-repellent, wherein said water-permeable side comprises a polymeric compound having a molecular weight in excess of about 1000 and having free hydrophilic groups selected from hydroxyl and amine groups and said water-repellent side comprises the reaction product of said polymeric compound with a vapor phase mixture comprising acid chloride having the general formula ##EQU4## and aldehyde having the general formula ##EQU5## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar proportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10.

Claim 3

Dependent Claim 58 words

An article of manufacture according to claim 1 wherein said reaction is carried out at atmospheric pressure and at a temperature which is both high enough to create a vapor pressure of acid chloride and aldehyde in the vapor phase of about one-half atmosphere and to heat the polymeric compound to the temperature required for reaction to occur.

Claim 4

Dependent Claim 25 words

An article of manufacture according to claim 1 wherein said solid phase polymeric compound is polyvinyl alcohol having a molecular weight greater than about 1000.

Claim 5

Dependent Claim 24 words

An article of manufacture according to claim 1 wherein said vapor phase mixture comprises about 30 mol-% octanoyl chloride and about 70 mol-% octanal.

Claim 6

Dependent Claim 23 words

An article of manufacture according to claim 1 wherein said vapor phase mixture comprises about 85 mol-% octanoyl chloride and 15 mol-% dodecanal.

Claim 7

Dependent Claim 29 words

An article of manufacture according to claim 1 wherein said polymeric compound is exposed to said vapor phase mixture for a period of about 10 seconds to 3 minutes.

Claim 8

Dependent Claim 101 words

A disposable paper container for containing aqueous liquids comprising cellulosic paper which has been exposed along the side normally coming into contact with aqueous liquids to a vapor phase mixture comprising acid chloride having the general formula ##EQU6## and aldehyde having the general formula ##EQU7## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar proportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10.

Claim 9

Dependent Claim 101 words

A disposable paper container for containing aqueous liquids comprising cellulosic paper which has been exposed along the side normally coming into contact with aqueous liquids to a vapor phase mixture comprising acid chloride having the general formula ##EQU6## and aldehyde having the general formula ##EQU7## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar proportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10.

Claim 10

Dependent Claim 106 words

A disposable paper container for containing aqueous liquids comprising paper having a film on one side formed by contact with polyvinyl alcohol and subsequently exposed along said polyvinyl alcohol side to a vapor phase mixture comprising acid chloride having the generaal formula ##EQU8## and aldehyde having the general formula ##EQU9## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar proportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10.

Claim 11

Dependent Claim 106 words

A disposable paper container for containing aqueous liquids comprising paper having a film on one side formed by contact with polyvinyl alcohol and subsequently exposed along said polyvinyl alcohol side to a vapor phase mixture comprising acid chloride having the generaal formula ##EQU8## and aldehyde having the general formula ##EQU9## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar proportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10.

Claim 12

Dependent Claim 112 words

A disposable article of sanitary clothing comprising a sheet of polyvinyl alcohol treated along the body-facing side by exposure to a vapor phase mixture comprising acid chloride having the general formula ##EQU10## and aldehyde having the general formula ##EQU11## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar porportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10, and bonded to said sheet along said treated side a soft, absorbent layer of a water-disposable material.

Claim 13

Dependent Claim 112 words

A disposable article of sanitary clothing comprising a sheet of polyvinyl alcohol treated along the body-facing side by exposure to a vapor phase mixture comprising acid chloride having the general formula ##EQU10## and aldehyde having the general formula ##EQU11## wherein R 1 and R 2 are independently selected from straight or branched-chain aliphatic hydrocarbon radicals having from 1 to about 20 carbon atoms and cyclic hydrocarbon radicals having from 6 to about 20 carbon atoms, further wherein the molar porportion of acid chloride to aldehyde in the vapor phase mixture is greater than about 1:10, and bonded to said sheet along said treated side a soft, absorbent layer of a water-disposable material.

Claim 14

Dependent Claim 20 words

A disposable article of sanitary clothing according to claim 9 wherein said article is suitable for use as a diaper.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1979-01-26	1979-07-28	1980-01-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1983-01-26	1983-07-28	1984-01-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1987-01-26	1987-07-28	1988-01-27	$7700.00	Window Closed / Lapsed

Disposable articles having a water-permeable and water-repellent surface

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