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US5354425A
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Tissue paper treated with polyhydroxy fatty acid amide softener systems that are biodegradable
Assignee: Procter and Gamble Co
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Filing: 1993-12-13
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Granted: 1994-10-11
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Expires: 2013-12-13
Abstract
Abstract Tissue papers, in particular pattern densified tissue papers, having an enhanced tactile sense of softness when treated with certain polyhydroxy fatty acid amide softener systems that are biodegradable are disclosed. The polyhydroxy fatty acid amides have the formula: ##STR1## wherein R 1 is H, C 1 -C hydrocarbyl, 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R 2 is a C 5 -C 31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.
Inventors
- 👤 Larry N. Mackey
- 👤 Saeed Ferershtehkhou
- 👤 Jeffrey J. Scheibel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:23
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H23/00; D21H23/02; D21H23/22; D21H23/50; D21H21/00; D21H21/14; D21H21/22; D21H21/24
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
88 words
A process for softening a tissue paper web which comprises the step of treating the web with from about 0.1 to about 3% by weight of a softener system comprising a polyhydroxy fatty acid amide having the formula: ##STR5## wherein R 1 is H, C 1 -C 6 hydrocarbyl, 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R 2 is a C 5 -C 31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.
Claim 2
Dependent Claim
88 words
A process for softening a tissue paper web which comprises the step of treating the web with from about 0.1 to about 3% by weight of a softener system comprising a polyhydroxy fatty acid amide having the formula: ##STR5## wherein R 1 is H, C 1 -C 6 hydrocarbyl, 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R 2 is a C 5 -C 31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein the web is treated with from about 0.1 to about 0.8% of the softener system.
Claim 4
Dependent Claim
33 words
The process of claim 1 wherein said treating step comprises applying the softener system to at least one surface of a dry tissue paper web having moisture content of about 10% or less.
Claim 5
Dependent Claim
48 words
The process of claim 3 wherein the dry tissue paper web is a pattern densified tissue paper having a moisture content of about 6% or less, a basis weight between about 10 g/m 2 and about 65 g/m 2 and a density of about 0.6 g/cc or less.
Claim 6
Dependent Claim
31 words
The process of claim 4 wherein the dry tissue paper web has a basis weight of about 40 g/m 2 or less and a density of about 0.3 g/cc or less.
Claim 7
Dependent Claim
23 words
The process of claim 3 wherein the softener system is applied as a pattern of softener droplets to said at least one surface.
Claim 8
Dependent Claim
37 words
The process of claim 1 wherein R 1 is N-methyl, N-ethyl, N-propyl, N-isopropyl, N-butyl, N-2-hydroxyethyl, N-methoxypropyl or N-2-hydroxypropyl; R 2 is straight chain C 11 -C 17 alkyl or alkenyl, or mixture thereof; and Z is glycityl.
Claim 9
Dependent Claim
36 words
The process of claim 7 wherein the polyhydroxy fatty acid amide softener has the formula: ##STR6## wherein R 1 is methyl or methoxypropyl; R 2 is a C 11 -C 17 straight-chain alkyl or alkenyl group.
Claim 10
Dependent Claim
41 words
The process of claim 8 wherein the polyhydroxy fatty acid amide softener is selected from the group consisting of N-lauryl-N-methyl glucamide, N-lauryl-N-methoxypropyl glucamide, N-cocoyl-N-methyl glucamide, N-cocoyl-N-methoxypropyl glucamide, N-palmityl-N-methyl glucamide, N-palmityl-N-methoxypropyl glucamide, N-oleoyl-N-methyl-glucamide, N-oleoyl-N-methoxypropyl glucamide, N-tallowyl-N-methyl glucamide, N-tallowyl-N-methoxypropyl glucamide, and mixtures thereof.
Claim 11
Dependent Claim
31 words
The process of claim 9 wherein the polyhydroxy fatty acid amide is selected from the group consisting of N-lauryl-N-methyl glucamide, N-lauryl -N-methoxypropyl glucamide, N-cocoyl-N-methyl glucamide, N-cocoyl -N-methoxypropyl glucamide, and mixtures thereof.
Claim 12
Dependent Claim
58 words
The process of claim 10 wherein the softener system further comprises an ethoxylated alcohol having a straight alkyl chain of from about 8 to about 22 carbon atoms and from about 1 to about 25 moles of ethylene oxide, in a weight ratio of polyhydoxy fatty acid amide to ethoxylated alcohol of from about 1:1 to about 10:1.
Claim 13
Dependent Claim
54 words
The process of claim 11 wherein the ethoxylated alcohol has a straight alkyl chain of from about 11 to about 15 carbon atoms and from about 3 to about 15 moles of ethylene oxide, and wherein the weight ratio of polyhydoxy fatty acid amide to ethoxylated alcohol is from about 3:1 to about 6:1.
Claim 14
Dependent Claim
30 words
The process of claim 9 wherein the polyhydroxy fatty acid amide is selected from the group consisting of N-palrnityl-N-methyl glucamide, N-palmityl-N-methoxypropyl glucamide, N-oleyl-N-methyl glucamide, N-oleoyl-N -methoxypropyl glucamide, and mixtures thereof.
Claim 15
Dependent Claim
38 words
The process of claim 13 wherein said treating step comprises the steps of: (a) adding the softener system to an aqueous slurry of paper making fibers; and (b) forming the softener system-containing slurry into a tissue paper web.
Claim 16
Dependent Claim
74 words
A softened tissue paper treated with from about 0.1 to about 3% of a softener system comprising polyhydroxy fatty acid amide having the formula: ##STR7## wherein R 1 is H, C 1 -C 6 hydrocarbyl, 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R 2 is a C 5 -C 31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.
Claim 17
Dependent Claim
74 words
A softened tissue paper treated with from about 0.1 to about 3% of a softener system comprising polyhydroxy fatty acid amide having the formula: ##STR7## wherein R 1 is H, C 1 -C 6 hydrocarbyl, 2-hydroxyethyl, 2-hydroxypropyl, methoxyethyl, methoxypropyl or a mixture thereof; R 2 is a C 5 -C 31 hydrocarbyl group; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain.
Claim 18
Dependent Claim
17 words
The paper of claim 15 treated with from about 0.1 to about 0.8% of the softener system.
Claim 19
Dependent Claim
35 words
The paper of claim 15 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/cc or less.
Claim 20
Dependent Claim
26 words
The paper of claim 17 which has a basis weight of about 40 g/m 2 or less and a density of about 0.3 g/cc or less.
Claim 21
Dependent Claim
26 words
The paper of claim 15 wherein said softener system is applied as a pattern of softener droplets to said at least one surface of the paper.
Claim 22
Dependent Claim
37 words
The paper of claim 15 wherein R 1 is N-methyl, N-ethyl, N-propyl, N-isopropyl, N-butyl, N-2-hydroxyethyl, N-methoxypropyl or N-2-hydroxypropyl; R 2 is straight chain C 11 -C 17 alkyl or alkenyl, or mixture thereof, and Z is glycityl.
Claim 23
Dependent Claim
35 words
The paper of claim 20 wherein said polyhydroxy fatty acid amide has the formula: ##STR8## wherein R 1 is methyl or methoxypropyl; R 2 is a C 11 -C 17 straight-chain alkyl or alkenyl group.
Claim 24
Dependent Claim
41 words
The paper of claim 21 wherein said polyhydroxy fatty acid amide is selected from the group consisting of N-lauryl-N-methyl glucamide, N-lauryl-N-methoxypropyl glucamide, N-cocoyl-N-methyl glucamide, N-cocoyl-N-methoxypropyl glucamide, N-palmityl-N-methyl glucamide, N-palmityl-N-methoxypropyl glucamide, N-oleoyl-N-methyl glucamide, N-oleoyl-N-methoxypropyl glucamide, N-tallowyl-N-methyl glucamide, N-tallowyl-N-methoxypropyl glucamide, and mixtures thereof.
Claim 25
Dependent Claim
29 words
The paper of claim 22 wherein said polyhydroxy fatty acid amide is selected from the group consisting of N-lauryl-N-methyl glucamide, N-lauryl-N-methoxypropyl glucamide, N-cocoyl-N-methyl glucamide, N-cocoyl-N-methoxypropyl glucamide, and mixtures thereof.
Claim 26
Dependent Claim
58 words
The paper of claim 23 wherein said softener system further comprises an ethoxylated alcohol having a straight alkyl chain of from about 8 to about 22 carbon atoms and from about 1 to about 25 moles of ethylene oxide, in a weight ratio of polyhydoxy fatty acid amide to ethoxylated alcohol of from about 1:1 to about 10:1.
Claim 27
Dependent Claim
54 words
The paper of claim 24 wherein said ethoxylated alcohol has a straight alkyl chain of from about 11 to about 15 carbon atoms and from about 3 to about 15 moles of ethylene oxide, and wherein the weight ratio of polyhydoxy fatty acid amide to ethoxylated alcohol is from about 3:1 to about 6:1.
Claim 28
Dependent Claim
29 words
The paper of claim 22 wherein the polyhydroxy fatty acid amide is selected from the group consisting of N-palmityl-N-methyl glucamide, N-palmityl-N-methoxypropyl glucamide, N-oleoyl-N-methyl glucamide, N-oleoyl-N-methoxypropyl glucamide, and mixtures thereof.
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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) | 1997-10-10 | 1998-04-11 | 1998-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-10 | 2002-04-11 | 2002-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-10 | 2006-04-11 | 2006-10-11 | $7700.00 | Window Closed / Lapsed |