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 Title: |
US5496649:
Cross-linked PVOH coatings having enhanced barrier characteristics
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Mallory, William M.; Farmington, NY
Bianchini, Eber C.; Rochester, NY
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| Assignee: |
Mobil Oil Corp., Fairfax, VA
other patents from MOBIL OIL CORP. (381140) (approx. 7,205)
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| Published / Filed: |
1996-03-05
/ 1994-07-21
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| Application Number: |
US1994000278458
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| IPC Code: |
Advanced:
B32B 27/30;
C08F 8/28;
C08J 3/03;
C08J 7/04;
C08K 5/07;
C08L 29/04;
Core:
C08F 8/00;
C08J 3/02;
C08J 7/00;
C08K 5/00;
C08L 29/00;
more...
IPC-7:
B05D 3/04;
B32B 27/08;
C08K 3/22;
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| ECLA Code: |
C08J3/03+L29/04; C08J7/04L29;
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| U.S. Class: |
Current:
428/518;
427/340;
427/393.5;
427/412.3;
428/461;
428/512;
428/513;
428/516;
428/910;
525/056;
525/061;
Original:
428/518;
428/516;
428/910;
428/512;
428/513;
428/461;
427/340;
427/393.5;
427/412.3;
525/056;
525/061;
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| Field of Search: |
428/518,910,516
427/340,393.5,412.3
525/056,61
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| Priority Number: |
| 1994-07-21 |
US1994000278458 |
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| Abstract: |
An improved oxygen barrier layer for coating a substrate, such as a polymeric film. The oxygen barrier is a layer of cross-linked polyvinyl alcohol and glyoxal, which exhibits improved barrier characteristics to the transmission of oxygen. The oxygen barrier is produced by coating a solution of polyvinyl alcohol, glyoxal and tensoactive agent onto at least one side of a substrate adapted for receipt of such solution. The polyvinyl alcohol is thereafter cross-linked in the absence of a catalyst to provide the oxygen barrier.
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| Attorney, Agent or Firm: |
McKillop, Alexander J. ;
Santini, Dennis P. ;
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| Primary / Asst. Examiners: |
Sluby, P. C.;
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| Maintenance Status: |
E2 Expired Check current status
CC Certificate of Correction issued
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AU CA EP JP KP NZ
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| Family: |
Show 15 known family members
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First Claim:
Show all 16 claims |
What is claimed is:
1. A method of providing an improved moisture-resistant oxygen barrier onto a surface of a substrate comprising:
- coating said surface of said substrate with a solution of poly(vinyl alcohol), glyoxal and a C4 to C10 alcohol, wherein said solution includes an amount of glyoxal sufficient to substantially 100% crosslink said poly(vinyl alcohol) and from about 5 ppm to about 0.5% by weight of said alcohol; and
- drying said coated substrate to substantially 100% crosslink said poly(vinyl alcohol) in the absence of a catalyst to provide said moisture-resistant oxygen barrier.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 8 U.S. patent(s) that reference this one
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