US5223096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft absorbent tissue paper with high permanent wet strength
Assignee: Procter and Gamble Co
•
Filing: 1991-11-01
•
Granted: 1993-06-29
•
Expires: 2011-11-01
Abstract
Abstract Tissue paper webs useful in the manufacture of soft, absorbent products such as paper towels, napkins, and facial tissues, and processes for making the webs. The tissue paper webs comprise papermaking fibers, a quaternary ammonium compound, a polyhydroxy plasticizer, and a permanent wet strength resin. The process comprises a first step of forming an aqueous papermaking furnish from the above-mentioned components. The second and third steps in the basic process are the deposition of the papermaking furnish onto a foraminous surface such as a Fourdrinier wire and removal of the water from the deposited furnish. An alternate process involves the use of the furnish containing the aforementioned components in a papermaking process which will produce a pattern densified fibrous web having a relatively high bulk field of relatively low fiber density in a patterned array of spaced zones of relatively high fiber density.
Inventors
- 👤 Dean V. Phan
- 👤 Paul D. Trokhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:08
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/18; D21H21/20; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37; D21H17/375; D21H17/03; D21H17/05; D21H17/06; D21H17/07; D21H17/46; D21H17/53; D21H17/54; D21H17/55
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
80 words
A strong, soft, absorbent tissue paper web comprising: (a) papermaking fibers; (b) from about 0.01% to about 2.0% by weight of a quaternary ammonium compound having the formula ##STR4## wherein each R 1 substituent is a C 12 -C 18 aliphatic hydrocarbon radical, and X - is a compatible anion; (c) from about 0.01% to about 2.0% by weight of a polyhydroxy plasticizer; and (d) from about 0.01% to about 3.0% by weight of a water-soluble permanent wet strength resin.
Claim 2
Dependent Claim
80 words
A strong, soft, absorbent tissue paper web comprising: (a) papermaking fibers; (b) from about 0.01% to about 2.0% by weight of a quaternary ammonium compound having the formula ##STR4## wherein each R 1 substituent is a C 12 -C 18 aliphatic hydrocarbon radical, and X - is a compatible anion; (c) from about 0.01% to about 2.0% by weight of a polyhydroxy plasticizer; and (d) from about 0.01% to about 3.0% by weight of a water-soluble permanent wet strength resin.
Claim 3
Dependent Claim
31 words
The paper web of claim 1 wherein said polyhydroxy plasticizer is selected from the group consisting of glycerol and polyethylene glycols having a molecular weight from about 200 to about 2000.
Claim 4
Dependent Claim
24 words
The paper web of claim 2 wherein said polyhydroxy plasticizer is a polyethylene glycol having a molecular weight from about 200 to about 600.
Claim 5
Dependent Claim
13 words
The paper web of claim wherein X - is a halogen or methylsulfate.
Claim 6
Dependent Claim
18 words
The paper web of claim 4 wherein each R 1 is selected from C 16 -C 18 alkyl.
Claim 7
Dependent Claim
12 words
The paper web of claim 5 wherein X - is methyl sulfate.
Claim 8
Dependent Claim
13 words
The paper web of claim 6 wherein said quaternary ammonium compound is di(hydrogenatedtallow)dimethylammonium.
Claim 9
Dependent Claim
20 words
The paper web of claim 1 wherein said water-soluble permanent wet strength resin is a polyamide-epichlorohydrin resin or polyacrylamide resin.
Claim 10
Dependent Claim
17 words
The paper web of claim 8 wherein said water-soluble permanent wet strength resin is a polyamide-epichlorohydrin resin.
Claim 11
Dependent Claim
24 words
The paper web of claim 5 wherein said polyhydroxy plasticizer is a polyethylene glycol having a molecular weight from about 200 to about 600.
Claim 12
Dependent Claim
20 words
The tissue paper of claim 10 wherein said quaternary ammonium compound is di(hydrogenatedtallow)dimethylammonium and wherein X - is methyl sulfate.
Claim 13
Dependent Claim
16 words
The paper web of claim wherein said water-soluble permanent wet strength resin is a polyamide-epichlorohydrin resin.
Claim 14
Dependent Claim
52 words
The paper web of claim 12 wherein said paper web comprises from about 0.03% to about 0.5% by weight of said quaternary ammonium compound, from about 0.03% to about 0.5% by weight of said polyhydroxy plasticizer, and from about 0.3% to about 1.5% by weight of said water-soluble permanent wet strength resin.
Claim 15
Dependent Claim
24 words
The paper web of claim wherein said paper web further comprises from about 0.01% to about 1.0% by weight of a dry strength additive.
Claim 16
Dependent Claim
21 words
The paper web of claim 1 wherein the water-soluble wet strength resin is an acrylic latex emulsion or anionic styrene-butadiene latex.
Claim 17
Dependent Claim
24 words
The paper web of claim wherein said paper web further comprises from about 0.01% to about 2.0% by weight of an nonionic surfactant additive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |