US5200443A
Expired / Lapsed
US
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Radiation stabilized fabric having improved odor characteristics containing an hindered amine compound
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1991-03-29
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Granted: 1993-04-06
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Expires: 2011-03-29
Abstract
Abstract There is disclosed a radiation stabilized fabric of propylene polymer or copolymer of propylene which has improved odor characteristics. Radiation stabilization results from adding by weight 0.25 to 2.0 percent of an acetylated hindered amine light stabilizer known in the art as Cyasorb UV-3668 or by adding by weight 0.25 to 2.0 percent of an oligomeric, hindered amine substituted siloxane such as polymethyl propyl 3-oxy [4- (2, 2, 6, 6-tetramethyl) piperdinyl] siloxane.
Inventors
- 👤 Robert L. Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:18
CPC Classifications
D; D06; D06M; D06M10/00; D01; D01F; D01F6/00; D01F6/02; D01F6/04; D01F6/06; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
26 words
An ionizing radiation stabilized fabric comprising a nonwoven web formed of a propylene polymer containing an acetylated hindered amine light stabilizer having a formula of: ##STR2##
Claim 2
Dependent Claim
26 words
An ionizing radiation stabilized fabric comprising a nonwoven web formed of a propylene polymer containing an acetylated hindered amine light stabilizer having a formula of: ##STR2##
Claim 3
Dependent Claim
18 words
The fabric of claim 1, wherein the acetylated hindered amine light stabilizer has a molecular weight of 449.
Claim 4
Dependent Claim
11 words
The fabric of claim 1, wherein the propylene polymer is polypropylene.
Claim 5
Dependent Claim
13 words
The fabric of claim 1, wherein the propylene polymer is a propylene-ethylene copolymer.
Claim 6
Dependent Claim
32 words
The fabric of claim 1 wherein the acetylated hindered amine light stabilizer is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
Claim 7
Dependent Claim
32 words
The fabric of claim 2 wherein the acetylated hindered amine light stabilizer is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
Claim 8
Dependent Claim
32 words
The fabric of claim 3 wherein the acetylated hindered amine light stabilizer is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
Claim 9
Dependent Claim
32 words
The fabric of claim 4 wherein the acetylated hindered amine light stabilizer is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
Claim 10
Dependent Claim
23 words
An ionizing radiation stabilized fabric having improved odor characteristics comprising a nonwoven web formed of a propylene polymer containing polymethyl propyl 3-oxy siloxane.
Claim 11
Dependent Claim
23 words
An ionizing radiation stabilized fabric having improved odor characteristics comprising a nonwoven web formed of a propylene polymer containing polymethyl propyl 3-oxy siloxane.
Claim 12
Dependent Claim
11 words
The fabric of claim 9, wherein the propylene polymer is polypropylene.
Claim 13
Dependent Claim
13 words
The fabric of claim 9, wherein the propylene polymer is a propylene-ethylene copolymer.
Claim 14
Dependent Claim
28 words
The fabric of claim 9 wherein the siloxane is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
Claim 15
Dependent Claim
28 words
The fabric of claim 10 wherein the siloxane is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
Claim 16
Dependent Claim
28 words
The fabric of claim 11 wherein the siloxane is present in the web in an amount of between about 0.25 to 2.0 percent by weight of the web.
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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) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |