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Patent US4337117A successfully refreshed from Google Patents.
US4337117A
Expired / Lapsed
US
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Decay resistant material
Assignee: DVSG Holding GmbH
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Filing: 1980-08-13
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Granted: 1982-06-29
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Expires: 2000-08-13
Abstract
Abstract Synthetic sheet material is resistant to decay by fungus and other microbial organisms and particularly useful in shoe construction, mulch papers and the like. The material comprises a uniform distribution of cellulose and optionally synthetic fiber within a matrix or binder and is formed from a furnish of the fibers; a metallic quinolinolate which lends the material decay resistant; a polymer colloid such as an acrylic latex which prevents the coagulation of the subsequently added elastomeric binder by the metallic quinolinolate; and a cationic polymer which acts as a retaining agent for the metallic quinolinolate in the synthetic sheet material.
Inventors
- 👤 Warren J. Bodendorf
- 👤 Alphonse R. Presto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:00
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H17/20; D21H17/33; D21H17/34; D21H17/37; D21H17/375; D21H17/41; D21H17/44; D21H17/45; D21H17/455
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
A process for manufacturing a wet laid synthetic fibrous sheet material which is resistant to decay by microbial organisms according to a papermaking technique including: providing a furnish of a fibrous slurry 5 to 12 parts by weight to 100 parts by weight of fiber metal-quinolinolate emulsion, a cationic polymer, and a polymer colloid; forming said furnish into a web; saturating said web with a binder; and drying said web to form a fibrous sheet with fibers and metal-quinolinolate uniformly distributed throughout said binder, said cationic polymer being provided at a sufficient level to retain greater than 99% of said metal-quinolinolate in said sheet during formation.
Claim 2
Dependent Claim
106 words
A process for manufacturing a wet laid synthetic fibrous sheet material which is resistant to decay by microbial organisms according to a papermaking technique including: providing a furnish of a fibrous slurry 5 to 12 parts by weight to 100 parts by weight of fiber metal-quinolinolate emulsion, a cationic polymer, and a polymer colloid; forming said furnish into a web; saturating said web with a binder; and drying said web to form a fibrous sheet with fibers and metal-quinolinolate uniformly distributed throughout said binder, said cationic polymer being provided at a sufficient level to retain greater than 99% of said metal-quinolinolate in said sheet during formation.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the metal content due to the metal-quinolinolate of the total process effluent is below 5 ppm.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein said metal content is below 2 ppm.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein said cationic polymer is present at a level of 0.4 to 2.0 parts by weight based on 100 parts by weight of fibers.
Claim 6
Dependent Claim
28 words
The process of claim 4 wherein said cationic polymer is present at a level of 0.7 to 0.9 parts by weight based upon 100 parts of said fiber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |