Patent US4377649A successfully refreshed from Google Patents.
US4377649A
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Wax compositions
Assignee: Freeman KH Pty Ltd
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Filing: 1981-07-22
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Granted: 1983-03-22
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Expires: 2001-07-22
Abstract
Abstract A wax composition has water repellent and adhesive properties, is cheap and has wide application in the manufacture and treatment of corrugated paperboard, fibreboard, particle board and other cellulosic materials. The liquid composition comprises 1-50 wt % of a wax, 1-30 wt % of a starch and 1-50 wt % of a formaldehyde based resin.
Inventors
- 👤 Nevin J. Sweeney
- 👤 Kenneth C. Seale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:45
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/60; C; C08; C08L; C08L61/00; C08L91/00; C08L91/06; C08L97/00; C08L97/02; D21H17/20; D21H17/21; D21H17/24; D21H17/28; D21H17/33; D21H17/46; D21H17/47; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A composition for use in the manufacture of cellulosic fibre materials, which comprises (a) from 1 to 50 wt % of a wax, (b) from 1 to 30 wt % of a starch, (c) from 1 to 50 wt % of a formaldehyde based resin, and (d) a liquid carrier.
Claim 2
Dependent Claim
50 words
A composition for use in the manufacture of cellulosic fibre materials, which comprises (a) from 1 to 50 wt % of a wax, (b) from 1 to 30 wt % of a starch, (c) from 1 to 50 wt % of a formaldehyde based resin, and (d) a liquid carrier.
Claim 3
Dependent Claim
13 words
A composition according to claim 1, wherein the wax is microcrystalline or macrocrystalline.
Claim 4
Dependent Claim
23 words
A composition according to claim 1 or 2, wherein the starch is present in the form of an ungelled or a pregelled slurry.
Claim 5
Dependent Claim
20 words
A composition according to claim 1 or 2, wherein the formaldehyde based resin is a melamine-formaldehyde, urea-formaldehyde or phenol-formaldehyde resin.
Claim 6
Dependent Claim
50 words
A composition according to claim 1 suitable for laminating paper in the production of corrugated paperboard which comprises (a) 13-32 wt % of a wax present in emulsion form (b) 8-24 wt % of a starch present in slurry form (c) 1-13 wt % of urea-formaldehyde resin, and (d) water.
Claim 7
Dependent Claim
61 words
A composition according to claim 1 suitable for providing a water resistant coating to cellulosic fibre materials, which comprises (a) 1-27 wt % of a wax present in emulsion form, (b) 2-12 wt % of a starch present in slurry form, (c) 26-50 wt % of a urea-formaldehyde resin, (d) 2-10 wt % of ethylene vinyl acetate in emulsion form, and
Claim 8
Dependent Claim
2 words
(e) water.
Claim 9
Dependent Claim
2 words
(e) water.
References Cited (Backward Citations)
US4255485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |