US5334286A
Expired / Lapsed
US
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Tissue paper treated with tri-component biodegradable softener composition
Assignee: Procter and Gamble Co
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Filing: 1993-05-13
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Granted: 1994-08-02
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Expires: 2013-05-13
Abstract
Abstract Tissue papers, in particular pattern densified tissue papers, having an enhanced tactile sense of softness when treated with tri-component biodegradable softener compositions are disclosed. These tri-component softener compositions comprise nonionic softeners, nonionic surfactant compatibilizers and polyhydroxy compounds. The weight ratio of the nonionic softeners to the nonionic surfactant compatibilizers ranges typically from about 10:1 to 1:10. The weight ratio of the nonionic softeners to the polyhydroxy compounds ranges typically from about 10:1 to 1:10. The tri-component biodegradable softeners are typically applied from an aqueous dispersion to at least one surface of the dry tissue paper web.
Inventors
- 👤 Dean Van Phan
- 👤 Paul D. Trokhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:55
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/22; D21H21/24; D21H17/00; D21H17/03; D21H17/05; D21H17/06; D21H17/14; D21H17/15
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
135 words
A softened tissue paper having on at least one surface thereof a tri-component biodegradable softener composition mixture comprising: (a) a nonionic softener selected from the group consisting of sorbitan mono-, di-, tri- esters and mixtures thereof; (b) a nonionic surfactant compatibilizer selected from the group consisting of ethoxylated sorbitan esters, propoxylated sorbitan esters, alkylpolyglycosides and mixtures thereof; and (c) a polyhydoxy compound selected from the group consisting of glycerol, polyethylene glycol, polypropylene glycol and mixtures thereof; wherein the weight ratio of the nonionic softener to the nonionic surfactant compatibilizer ranges from about 10:1 to 1:10 and wherein the weight ratio of the nonionic softener to the polyhydroxy compound ranges from about 10:1 to 1:10, the tri-component softener being present in an amount from about 0.1% to about 3% by weight of the dry tissue paper.
Claim 2
Dependent Claim
135 words
A softened tissue paper having on at least one surface thereof a tri-component biodegradable softener composition mixture comprising: (a) a nonionic softener selected from the group consisting of sorbitan mono-, di-, tri- esters and mixtures thereof; (b) a nonionic surfactant compatibilizer selected from the group consisting of ethoxylated sorbitan esters, propoxylated sorbitan esters, alkylpolyglycosides and mixtures thereof; and (c) a polyhydoxy compound selected from the group consisting of glycerol, polyethylene glycol, polypropylene glycol and mixtures thereof; wherein the weight ratio of the nonionic softener to the nonionic surfactant compatibilizer ranges from about 10:1 to 1:10 and wherein the weight ratio of the nonionic softener to the polyhydroxy compound ranges from about 10:1 to 1:10, the tri-component softener being present in an amount from about 0.1% to about 3% by weight of the dry tissue paper.
Claim 3
Dependent Claim
22 words
The tissue paper of claim 1 wherein said softener is applied nonuniformly to said at least one surface of said tissue paper.
Claim 4
Dependent Claim
27 words
The tissue paper of claim 2 wherein said softener is applied to said at least one surface of said tissue paper as a pattern of softener droplets.
Claim 5
Dependent Claim
23 words
The tissue paper of claim 2 wherein said softener is applied to said at least one surface of said tissue paper by printing.
Claim 6
Dependent Claim
26 words
The tissue paper of claim 2 wherein said softener is in an amount from about 0.2 to about 0.8% by weight of the dry tissue paper.
Claim 7
Dependent Claim
37 words
The tissue paper of claim 2 which is a pattern densified tissue paper having a basis weight between about 10 g/m 2 and about 65 g/m 2 and a density of about 0.6 g/cm 3 or less.
Claim 8
Dependent Claim
22 words
The tissue paper of claim 1 wherein said nonionic softener is a sorbitan ester of a C 12 -C 22 fatty acid.
Claim 9
Dependent Claim
30 words
The tissue paper of claim 7 wherein said sorbitan ester is selected from the group consisting of sorbitan laurates, sorbitan myristates, sorbitan palmitates, sorbitan stearates, sorbitan behenates and mixtures thereof.
Claim 10
Dependent Claim
37 words
The tissue paper of claim 5 wherein said nonionic surfactant compatibilizer is an ethoxylated sorbitan ester of a C 12 -C 22 fatty acid having an average degree of ethoxylation of from about 1 to about 20.
Claim 11
Dependent Claim
53 words
The tissue paper of claim 9 wherein said ethoxylated sorbitan ester is selected from the group consisting of ethoxylated sorbitan laurates, ethoxylated sorbitan myristates, ethoxylated sorbitan palmitates, ethoxylated sorbitan stearates, ethoxylated sorbitan behenates and mixtures thereof, the ethoxylated sorbitan ester having an average degree of ethoxylation of from about 2 to about 10.
Claim 12
Dependent Claim
34 words
The tissue paper of claim 10 wherein said ethoxylated sorbitan ester is selected from the group consisting of ethoxylated sorbitan stearates having an average degree of ethoxylation of from about 2 to about 6.
Claim 13
Dependent Claim
12 words
The tissue paper of claim 1 wherein the polyhydroxy compound is glycerol.
Claim 14
Dependent Claim
27 words
The tissue paper of claim 1 wherein the polyhydroxy compound is a polyethylene glycol having a weight average molecular weight ranging from about 200 to about 4000.
Claim 15
Dependent Claim
26 words
The tissue paper of claim 1 wherein the polyhydroxy compound is polypropylene glycol having a weight average molecular weight ranging from about 200 to about 4000.
Claim 16
Dependent Claim
26 words
The tissue paper of claim 13 wherein the polyhydroxy compound is polyethylene glycol having a weight average molecular weight ranging from about 200 to about 600.
Claim 17
Dependent Claim
26 words
The tissue paper of claim 14 wherein the polyhydroxy compound is polypropylene glycol having a weight average molecular weight ranging from about 200 to about 600.
Claim 18
Dependent Claim
37 words
The tissue paper of claim 8 wherein said nonionic surfactant compatibilizer is an ethoxylated sorbitan ester of a C 12 -C 22 fatty acid having an average degree of ethoxylation of from about 1 to about 20.
Claim 19
Dependent Claim
57 words
The tissue paper of claim 17 wherein said nonionic surfactant compatibilizer is an ethoxylated sorbitan ester selected from the group consisting of ethoxylated sorbitan laurates, ethoxylated sorbitan myristates, ethoxylated sorbitan palmitates, ethoxylated sorbitan stearates, ethoxylated sorbitan behenates and mixtures thereof, the ethoxylated sorbitan ester having an average degree of ethoxylation of from about 2 to about 10.
Claim 20
Dependent Claim
27 words
The tissue paper of claim 18 wherein said polyhydroxy compound is a polyethylene glycol having a weight average molecular weight ranging from about 200 to about 600.
References Cited (Backward Citations)
US3296065A
Cited
US3301746A
Cited
US3305392A
Cited
US3554862A
Cited
US4158594A
Cited
US3844880A
Cited
US3755220A
Cited
US3814096A
Cited
US3814096B1
Cited
US3916058A
Cited
US4085052A
Cited
US4103047A
Cited
US4142978A
Cited
US3994771A
Cited
US4144122A
Cited
US4196045A
Cited
US4239065A
Cited
US4300981A
Cited
US4432833A
Cited
US4441962A
Cited
US4351699A
Cited
US4377543A
Cited
US4447294A
Cited
US4514345A
Cited
US4528239A
Cited
US4529480A
Cited
US4637859A
Cited
US4481243A
Cited
US4513051A
Cited
US4734162A
Cited
US4795530A
Cited
US4786367A
Cited
US4882221A
Cited
US4883475A
Cited
US4943350A
Cited
US5059282A
Cited
US4940513A
Cited
US4959125A
Cited
US4950545A
Cited
US5217576A
Cited
US5223096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |