US3755067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asbestos fiber extended phenolic adhesives
Assignee: Johns Manville Corp
•
Filing: 1971-10-13
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Granted: 1973-08-28
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Expires: 1991-10-13
Abstract
Abstract Processed asbestos fiber is utilized as a viscosity and thixotropy control agent in an improved water-resistant phenolic resin, wood laminating adhesive. An alkaline catalyst, pressuredigested lignocellulose and secondary extenders such as wheat flour may also be incorporated in the composition.
Inventors
- 👤 A Schnabel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
C; C09; C09J; C09J161/00; C09J161/04; C09J161/06; C08; C08L; C08L2666/00; C08L2666/54; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31659; Y10T428/31942; Y10T428/31949; Y10T428/31957; Y10T428/3196; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
24 words
The adhesive of claim 1 in which the processed asbestos fiber has a kerosene retention of (4.50 to 8.00 gm)/(10 gm of asbstos fiber)
Claim 2
Dependent Claim
26 words
The adhesive of claim 1 in which the composition contains from 4 to 11 parts asbestos fiber, and up to 7 parts of pressure digested lignocellulose.
Claim 3
Dependent Claim
21 words
The adhesive of claim 3 which includes 1.4 to 14 parts of a water-soluble alkali metal or alkaline earth metal hydroxide.
Claim 4
Dependent Claim
60 words
The adhesive of claim 3 which consists essentially of 70 parts of phenolic resin; 4-11 parts of asbestos fiber; 0-7 parts of pressure digested lignocellulose with the total parts of asbestos fiber and lignocellulose being about 11, about 5 parts of wheat flour and about 5 parts of fifty percent aqueous NaOH; and sufficient water to provide a spreadable composition.
Claim 5
Dependent Claim
17 words
The adhesive of claim 1 in which the processed asbestos fiber is a Grade 7 chrysotile fiber.
Claim 6
Dependent Claim
13 words
The adhesive of claim 1 having a thixotropic index of at least 5.
Claim 7
Dependent Claim
38 words
Exterior grade plywood bonded with an adhesive composition that comprises: a. 70 parts of phenolic resin; and b. 4 to 11 parts of processed asbestos fiber having a kerosene retention of at least (4.25 gm)/(10 gm asbestos fiber)
Claim 8
Dependent Claim
56 words
The product of claim 8 in which the adhesive composition consists essentially of 70 parts of phenolic resin; 4-11 parts of asbestos fiber; 0-7 parts of pressure digested lignocellulose with thE total parts of asbestos fiber and lignocellulose being about 11, about 5 parts of wheat flour and about 5 parts of 50 percent aqueous NaOH.
Claim 9
Dependent Claim
17 words
The product of claim 8 in which the processed asbestos fiber is a Grade 7 chrysotile fiber.
References Cited (Backward Citations)
US1085100A
Cited
US1200731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |