Patent US3787344A successfully refreshed from Google Patents.
US3787344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High buffing vinyl aromatic resin-wood composites
Assignee: Dow Chemical Co
•
Filing: 1970-12-02
•
Granted: 1974-01-22
•
Expires: 1990-12-02
Abstract
Abstract A wood product having a self-polishing, lubricated, waterresistant surface and a method for accomplishing the same which method comprises impregnating wood with a solution of a vinyl aromatic monomer, a low melting wax, a cross-linking agent such as a dimethacrylate or diacrylate of a glycol or a polyglycol, divinylbenzene, dimethacrylate or a polyester of maleic anhydride with or without a catalyst, the impregnation being conducted after evacuation of the wood, the cure being accomplished by heating the wood to between about 80* and 150*C. for from 10 to 60 minutes.
Inventors
- 👤 D Kenaga
- 👤 R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:31
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C08L91/00; C08L91/06; B; B27; B27K; B27K2240/00; B27K2240/70; B27K3/00; B27K3/02; B27K3/08; B27K3/15; B27K3/156; B27K3/34; B27K3/36; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/16; C08K5/22; C08K5/23; C08L21/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
The composition of claim 1 wherein monomer is t-butylstyrene, the cross-linking agent is divinyl benzene and the catalyst is azobisisobutyronitrile.
Claim 2
Dependent Claim
12 words
The composition of claim 2 wherein said wax is Japan crude wax.
Claim 3
Dependent Claim
11 words
The composition of claim 2 wherein said wax is paraffin wax.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said petroleum oil is paraffin oil.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |