US4972018A
Expired / Lapsed
US
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Latex based adhesive composition containing ammonium zirconium carbonate for the enhancement of hot, green bond adhesive properties of paperboard and corrugated board
Assignee: Dow Chemical Co
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Filing: 1988-12-19
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Granted: 1990-11-20
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Expires: 2008-12-19
Abstract
Abstract An adhesive of starch, an ammonium-based latex and ammonium zirconium carbonate improves the hot, green bond properties of the adhesive formulation for paperboard and corrugated board. The latexes are typical styrene-butadiene and carboxylated styrene-butadiene latexes but untypically are polymerized in the presence of a volatile base such as ammonium hydroxide.
Inventors
- 👤 Arthur N. Leadbetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:48
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/40; C; C09; C09J; C09J103/00; C09J103/02; C09J109/00; C09J109/06; C09J109/08; C09J113/00; C09J113/02; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
An aqueous adhesive consisting essentially of: (a) starch present in an amount of from about 20 to about 95 dry parts per hundred parts dry adhesive: and (b) an ammonium-based latex in an amount of from about 80 to about 5 dry parts per hundred parts dry adhesive: and (b) ammonium zirconium carbonate present in the aqueous adhesive in an amount of from about 0.1 to about 10 parts (expressed as ZrO 2 ) per 100 parts of latex solids.
Claim 2
Dependent Claim
80 words
An aqueous adhesive consisting essentially of: (a) starch present in an amount of from about 20 to about 95 dry parts per hundred parts dry adhesive: and (b) an ammonium-based latex in an amount of from about 80 to about 5 dry parts per hundred parts dry adhesive: and (b) ammonium zirconium carbonate present in the aqueous adhesive in an amount of from about 0.1 to about 10 parts (expressed as ZrO 2 ) per 100 parts of latex solids.
Claim 3
Dependent Claim
13 words
The adhesive of claim 1 wherein said latex is an isopropenyl-2-oxazoline-modified polymer latex.
Claim 4
Dependent Claim
24 words
The adhesive of claim 1 wherein the ammonium-based latex is selected from the group consisting of styrene-butadiene polymer latex or carboxylated styrene-butadiene polymer latex.
Claim 5
Dependent Claim
14 words
The adhesive of claim 1 wherein said latex is an isopropenyl-2-oxazoline-modified styrene-butadiene polymer latex.
Claim 6
Dependent Claim
29 words
The adhesive of claim 4 wherein said isopropenyl-2-oxazoline is present in an amount of from about 0.25 to about 10 parts by weight based on 100 parts polymer latex.
Claim 7
Dependent Claim
29 words
The adhesive of claim 4 wherein said isopropenyl-2-oxazoline is present in an amount of from about 1 to about 2 parts by weight based on 100 parts polymer latex.
Claim 8
Dependent Claim
38 words
The adhesive of claim 1 wherein the ammonium zirconium carbonate (expressed as ZrO 2 ) is present in the aqueous adhesive in an amount of from about 0.5 to about 5.0 parts per 100 parts of latex solids.
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) | 1993-11-19 | 1994-05-21 | 1994-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-19 | 1998-05-21 | 1998-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-19 | 2002-05-21 | 2002-11-20 | $7700.00 | Window Closed / Lapsed |