Patent US4440884A successfully refreshed from Google Patents.
US4440884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caustic sensitive, water resistant labeling adhesive
Assignee: HB Fuller Licensing and Financing Inc
•
Filing: 1982-10-20
•
Granted: 1984-04-03
•
Expires: 2002-10-20
Abstract
Abstract An aqueous adhesive, resistant to humidity and water, which debonds in the presence of strong base, comprises finely divided aluminum, a natural product bonding agent and water.
Inventors
- 👤 Leonard C. Jannusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
C; C09; C09J; C09J103/00; C09J103/02; C09J201/00; C08; C08L; C08L2666/00; C08L2666/54; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
45 words
An aqueous adhesive, capable of forming substantial bonds resistant to humidity and water, and capable of rapidly debonding in the presence of strong base, which comprises an effective debonding amount of finely divided aluminum, an effective amount of a natural product bonding agent, and water.
Claim 2
Dependent Claim
45 words
An aqueous adhesive, capable of forming substantial bonds resistant to humidity and water, and capable of rapidly debonding in the presence of strong base, which comprises an effective debonding amount of finely divided aluminum, an effective amount of a natural product bonding agent, and water.
Claim 3
Dependent Claim
25 words
The aqueous adhesive of claim 1 wherein the finely divided aluminum comprises an aluminum flake having a particle size of about 100 to 0.1 microns.
Claim 4
Dependent Claim
32 words
The adhesive of claim 1 wherein the finely divided aluminum comprises a finely divided atomized aluminum powder which is present in an amount of about 0.1 to 15 wt-% of the adhesive.
Claim 5
Dependent Claim
33 words
The adhesive of claim 3 wherein the particle size of the atomized aluminum powder is about 100-0.1 microns and is present in an amount of about 0.25 to 5 wt-% of the adhesive.
Claim 6
Dependent Claim
35 words
The adhesive of claim 3 wherein the atomized aluminum powder has a particle size of about 25 to 0.1 microns, and is present in an amount of about 1 to 3 wt-% of the adhesive.
Claim 7
Dependent Claim
17 words
The adhesive of claim 1 wherein the bonding agent comprises casein, a casein derivative or mixtures thereof.
Claim 8
Dependent Claim
16 words
The adhesive of claim 1 wherein the bonding agent comprises starch or a mixture of starches.
Claim 9
Dependent Claim
20 words
The adhesive of claim 1 wherein the natural product bonding agent comprises starch in combination with a fortifying hydrophilic polymer.
Claim 10
Dependent Claim
21 words
The adhesive of claim 8 wherein the fortifying hydrophilic polymers are a styrene-maleic anhydride copolymer, an acrylate polymer, or mixtures thereof.
Claim 11
Dependent Claim
22 words
The adhesive of claim 9 wherein the styrene maleic anhydride fortifying polymer is the ammonium derivative of a hydrolyzed maleic anhydride polymer.
Claim 12
Dependent Claim
18 words
The adhesive of claim 1 wherein the adhesive contains a nitrogenous substance comprising urea, dicyandiamide, or mixtures thereof.
Claim 13
Dependent Claim
14 words
The adhesive of claim 1 wherein the adhesive contains less than 75 wt-% water.
Claim 14
Dependent Claim
20 words
The adhesive of claim 1 wherein the adhesive contains about 10 to 60 wt-% of the natural product bonding agent.
Claim 15
Dependent Claim
20 words
The adhesive of claim 9 wherein the adhesive contains about 1 to 40 wt-% of the hydrophilic polymeric fortifying polymer.
Claim 16
Dependent Claim
24 words
The adhesive of claim 1 wherein the nitrogenous substance is present in an amount of about 0.1 to 20 wt-% based on the adhesive.
Claim 17
Dependent Claim
29 words
The adhesive of claim 10 wherein the ammonia is present in an amount of about 0.1-5 moles of ammonia per each mole of hydrophilic hydrolyzable substituent in the polymer.
Claim 18
Dependent Claim
22 words
A method for labeling containers which comprises forming a bond between a label and a container with the adhesive of claim 1.
Claim 19
Independent Claim
54 words
A method of forming an aqueous adhesive, capable of forming substantial bonds resistant to humidity and water, and capable of rapidly debonding in the presence of strong base, which comprises forming a suspension of an effective debonding amount of finely divided aluminum and an effective amount of a natural product bonding agent in water.
Claim 20
Independent Claim
54 words
A method of forming an aqueous adhesive, capable of forming substantial bonds resistant to humidity and water, and capable of rapidly debonding in the presence of strong base, which comprises forming a suspension of an effective debonding amount of finely divided aluminum and an effective amount of a natural product bonding agent in water.
Claim 21
Dependent Claim
39 words
The method of claim 18 wherein the finely divided aluminum is a finely divided aluminum flake having a particle size of about 100-0.1 microns and is present in an amount of about 0.25 to 5 wt-% of the adhesive.
Claim 22
Dependent Claim
32 words
The method of claim 18 wherein the finely divided aluminum comprises a finely divided aluminum powder which is present at a concentration of about 0.1 to 15 wt-% of the adhesive composition.
Claim 23
Dependent Claim
34 words
The method of claim 20 wherein the aluminum powder has a particle size of less than about 100-0.1 microns, and is present in an amount of about 0.25 to 5 wt-% of the adhesive.
Claim 24
Dependent Claim
34 words
The method of claim 20 wherein the atomized aluminum powder has a particle size of about 25 to 0.1 microns, and is present in an amount of 1 to 3 wt-% of the adhesive.
Claim 25
Dependent Claim
17 words
The method of claim 18 wherein the bonding agent comprises casein, a casein derivative, or mixtures thereof.
Claim 26
Dependent Claim
16 words
The method of claim 18 wherein the bonding agent comprises starch or a mixture of starches.
Claim 27
Dependent Claim
19 words
The method of claim 18 wherein the bonding agent comprises starch in combination with a hydrophilic fortifying polymer composition.
Claim 28
Dependent Claim
23 words
The method of claim 25 wherein the hydrophilic fortifying polymer composition comprises a styrene maleic anhydride polymer, an acrylate polymer or mixtures thereof.
Claim 29
Dependent Claim
22 words
The method of claim 26 wherein a styrene maleic anhydride copolymer comprises the ammonium derivatives of a hydrolyzed styrene maleic anhydride copolymer.
Claim 30
Dependent Claim
27 words
The method of claim 18 wherein there is also present in the adhesive a viscosity controlling amount of a nitrogenous substance comprising urea, dicyandiamide, or mixtures thereof.
Claim 31
Dependent Claim
26 words
The method of claim 18 wherein the bonding agent is present in the adhesive at an amount of about 10-60 wt-% based on the total composition.
Claim 32
Dependent Claim
26 words
The method of claim 25 wherein the hydrophilic fortifying polymer is present at a concentration of about 1 to 40 wt-% based on the adhesive composition.
Claim 33
Dependent Claim
23 words
The method of claim 28 wherein the nitrogenous substance is present at a concentration of about 0.1-20 wt-% based on the adhesive composition.
Claim 34
Dependent Claim
26 words
The method of claim 27 wherein the amount of ammonia present comprises about 0.1-5 moles of ammonia per each mole of maleic anhydride in the polymer.
Claim 35
Dependent Claim
82 words
An aqueous adhesive, capable of forming substantial bonds resistant to humidity and water and capable of rapidly debonding in the presence of strong base, which comprises: (a) about 0.1 to 25 wt-% of an atomized aluminum powder having a particle size of about 0.1 to 100 microns; (b) about 10 to 60 wt-% of starch; (c) about 1 to 40 wt-% of a fortifying hydrophilic polymeric composition; (d) about 0.1 to 20 wt-% of urea, dicyandiamide or mixtures thereof; and (e) water.
Claim 36
Dependent Claim
82 words
An aqueous adhesive, capable of forming substantial bonds resistant to humidity and water and capable of rapidly debonding in the presence of strong base, which comprises: (a) about 0.1 to 25 wt-% of an atomized aluminum powder having a particle size of about 0.1 to 100 microns; (b) about 10 to 60 wt-% of starch; (c) about 1 to 40 wt-% of a fortifying hydrophilic polymeric composition; (d) about 0.1 to 20 wt-% of urea, dicyandiamide or mixtures thereof; and (e) water.
Claim 37
Dependent Claim
35 words
The aqueous adhesive of claim 33 wherein the atomized aluminum has an average particle size of 0.1 to 25 microns and is present in an amount of about 1 to 3 wt-% of the adhesive.
Claim 38
Dependent Claim
22 words
The aqueous adhesive of claim 33 wherein the fortifying hydrophilic polymeric composition comprises an ammonium derivative of a hydrolyzed styrene-maleic anhydride polymer.
Claim 39
Dependent Claim
16 words
The aqueous adhesive of claim 33 wherein a defoamer and a bacteria inhibitor are also present.
Claim 40
Dependent Claim
46 words
A method for applying a label to a container which comprises the steps: (a) forming a layer of the adhesive of claim 33 on a label; and (b) contacting the container with the label wherein the adhesive forms a bond between the label and the container.
References Cited (Backward Citations)
US2368767A
Cited
US3872051A
Cited
US3857803A
Cited
US3939108A
Cited
US4135033A
Cited
US4248917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |