US3718530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of polypropylene surface to promote adhesive bonding
Assignee: Burlington Industries Inc
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Filing: 1970-09-16
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Granted: 1973-02-27
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Expires: 1990-09-16
Abstract
Abstract The adhesion of carboxylated SBR adhesive to polypropylene carpet backings is improved by a coating on the polypropylene of chlorinated polypropylene having a chlorine content of 10-20%.
Inventors
- 👤 T Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:03
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; C; C09; C09J; C09J123/00; C09J123/26; C09J123/28; B32B27/32; B32B27/322; B32B7/00; B32B7/04; B32B7/12; D; D05; D05C; D05C17/00; D05C17/02; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2471/00; B32B2471/02; D06N2201/00; D06N2201/02; D06N2201/0245; D06N2201/0254; D06N2201/0263; D06N2201/04; D06N2201/042; D06N2201/045; D06N2201/06; D06N2203/00; D06N2203/02; D06N2203/04; D06N2203/042; D06N2203/045; D06N2203/047; D06N2209/00; D06N2209/16; D06N2209/1628; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/23993; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
In a tufted carpet comprising tufted yarns inserted through a primary carpet backing and adhered thereto by means of an adhesive; the improvement wherein the adhesive is a carboxylated styrene-butadiene copolymer rubber, and said backing has a weight of 1.4 to 15 ounces per square yard, comprises polypropylene fibers and is coated with chlorinated polypropylene having a chlorine content of 10 to 20 percent by weight, the amount of said chlorinated polypropylene being 0.04 to 0.16 ounces/square yard.
References Cited (Backward Citations)
US3515616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |