US4913969A
Expired / Lapsed
US
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Process for bonding substrates impermeable to water vapor
Assignee: Henkel AG and Co KGaA
•
Filing: 1988-07-20
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Granted: 1990-04-03
•
Expires: 2008-07-20
Abstract
Abstract A process for improving the bonding of hotmelt materials which post crosslink in the presence of moisture, to water vapor impermeable substrates by applying an activator material, which release bound water at the hotmelt application temperature, to at least one of the water vapor impermeable substrates.
Inventors
- 👤 Heinz-Guenther Schulte
- 👤 Guenter Tauber
- 👤 Wolfgang Pille-Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:08
CPC Classifications
C; C09; C09J; C09J175/00; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/60; C08G18/603; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8083; C08G18/809; C09J5/00; C09J5/06; C08G2170/00; C08G2170/20; C08G2190/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
87 words
A process for bonding a substrate, impermeable to water vapor, with a hotmelt material which post-crosslinks on contact with moisture which comprises: (1) applying a suspension or solution of an activator material in a liquid to at least one substrate surface to be bonded, the activator material being a substance which releases chemically or adsorptively bound water at the temperature of application of the hotmelt material; (2) removing the liquid; and (3) applying the hotmelt material at its application temperature to the at least one substrate surface.
Claim 2
Dependent Claim
87 words
A process for bonding a substrate, impermeable to water vapor, with a hotmelt material which post-crosslinks on contact with moisture which comprises: (1) applying a suspension or solution of an activator material in a liquid to at least one substrate surface to be bonded, the activator material being a substance which releases chemically or adsorptively bound water at the temperature of application of the hotmelt material; (2) removing the liquid; and (3) applying the hotmelt material at its application temperature to the at least one substrate surface.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein the hotmelt material is a hotmelt adhesive and a second substrate is placed over the substrate to which the hot melt is applied and the substrates urged together.
Claim 4
Dependent Claim
45 words
The process of claim 1 wherein the hotmelt material is a hotmelt sealant and the hotmelt sealant is applied to a space at least a portion of which is bounded by the at least one substrate surface to which the activator material has been applied.
Claim 5
Dependent Claim
28 words
The process of claim 1, 2 or 3 wherein the activator material release from about 0.5 to about 25% by weight of the activator material, of bound water.
Claim 6
Dependent Claim
25 words
The process of claim 4 wherein the activator material releases from about 1 to about 10%, by weight of the activator material, of bound water.
Claim 7
Dependent Claim
39 words
The process of claim 1, 2 or 3 wherein the activator material is applied to the at least one substrate surface to be bonded so that at least 80% of the surface is not covered by the activator material.
Claim 8
Dependent Claim
26 words
The process of claim 6 wherein at least 50% of the at least one substrate surface to be bonded is not covered by the activator material.
Claim 9
Dependent Claim
37 words
The process of claim 4 wherein the activator material is applied to the at least one substrate surface to be bonded so that at least about 80% of the surface is not covered by the activator material.
Claim 10
Dependent Claim
20 words
The process of claim 8 wherein at least about 50% of the surface is not covered by the activator material.
Claim 11
Dependent Claim
55 words
The process of claim 1, 2, or 3 wherein the activator material is an air dried, oxide, hydroxide or salt containing water of crystallization of an alkali metal, alkaline earth metal, or metal of Group IIIA, IB, IIB, IIIB, IVB, VB, VIB, VIIB or VIIIB of the Periodic Chart of Elements, Merck Index, Tenth Edition.
Claim 12
Dependent Claim
52 words
The process of claim 4 wherein the activator material is an air dried, oxide, hydroxide or salt containing water of crystallization of an alkali metal, alkaline earth metal, or metal of Group IIIA, IB, IIB, IIIB, IVB, VB, VIB, VIIB or VIIIB of the periodic chart of Elements, Merck Index, Tenth Edition.
Claim 13
Dependent Claim
15 words
The process of claim 1, 2 or 3 wherein the activator material is a zeolite.
Claim 14
Dependent Claim
11 words
The process of claim 12 wherein the zeolite is zeolite A.
Claim 15
Dependent Claim
23 words
The process of claim 10 wherein the activator material is iron sulfate containing water of crystallization or barium hydroxide containing water of crystallization.
Claim 16
Dependent Claim
16 words
The process of claim 4 wherein the activator material is a hydrophilic polymer containing bound water.
Claim 17
Dependent Claim
28 words
The process of claim 15 wherein the activator material comprises at least one hydrophilic polymer selected from the group consisting of cellulose derivatives, starch derivatives, polyacrylamide and polyvinylpyrrolidone.
Claim 18
Dependent Claim
22 words
The process of claim 1, 2 or 3 wherein the activator material is applied to the substrate as a dispersion in water.
Claim 19
Dependent Claim
19 words
The process of claim 4 wherein the activator material is applied to the substrate as a dispersion in water.
Claim 20
Dependent Claim
20 words
The process of claim 17 wherein the dispersion contains from about 1 to about 90% by weight of activator material.
Claim 21
Dependent Claim
20 words
The process of claim 17 wherein the dispersion contains from about 10 to about 50% by weight of activator material.
Claim 22
Dependent Claim
22 words
The process of claim 17 wherein the dispersion contains from about from about 10 to about 20% by weight of activator material.
Claim 23
Dependent Claim
20 words
The process of claim 18 wherein the dispersion contains from about 10 to about 50% by weight of activator material.
Claim 24
Dependent Claim
19 words
The process of claim 22 wherein the dispersion contains from about to 10 to about 20% of activator material.
Claim 25
Dependent Claim
21 words
The process of claim 17 wherein the dispersion contains at least one water soluble polymer as a stabilizer for the dispersion.
Claim 26
Dependent Claim
21 words
The process of claim 18 wherein the dispersion contains at least one water soluble polymer as a stabilizer for the dispersion.
Claim 27
Dependent Claim
24 words
The process of claim 24 wherein the stabilizer comprises at least one polymer selected from the group consisting of cellulose ethers and polyvinyl alcohol.
Claim 28
Dependent Claim
24 words
The process of claim 25 wherein the stabilizer comprises at least one polymer selected from the group consisting of cellulose ethers and polyvinyl alcohol.
Claim 29
Dependent Claim
24 words
The process of claim 1, 2 or 3 wherein the activator material is applied to the substrate as a dispersion in an organic liquid.
Claim 30
Dependent Claim
37 words
The process of claim 28 wherein the organic liquid comprises at least one liquid selected from the group consisting of alcohols containing from 1 to 5 carbon atoms and ketones containing from 3 to 5 carbon atoms.
Claim 31
Dependent Claim
21 words
The process of claim 4 wherein the activator material is applied to the substrate as a dispersion in an organic liquid.
Claim 32
Dependent Claim
37 words
The process of claim 30 wherein the organic liquid comprises at least one liquid selected from the group consisting of alcohols containing from 1 to 5 carbon atoms and ketones containing from 3 to 5 carbon atoms.
Claim 33
Dependent Claim
17 words
The process of claim 28 wherein the dispersion contains at least one organic liquid soluble polymer stabilizer.
Claim 34
Dependent Claim
15 words
The process of claim 32 wherein the organic liquid soluble polymer is a cellulose ester.
Claim 35
Dependent Claim
17 words
The process of claim 30 wherein the dispersion contains at least one organic liquid soluble polymer stabilizer.
Claim 36
Dependent Claim
15 words
The process of claim 34 wherein the organic liquid soluble polymers is a cellulose ester.
Claim 37
Dependent Claim
34 words
The process of claim 1, 2 or 3 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 38
Dependent Claim
31 words
The process of claim 4 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 39
Dependent Claim
31 words
The process of claim 6 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 40
Dependent Claim
31 words
The process of claim 8 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 41
Dependent Claim
31 words
The process of claim 10 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 42
Dependent Claim
31 words
The process of claim 11 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 43
Dependent Claim
31 words
The process of claim 12 wherein the hotmelt material comprises at least one thermoplstic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 44
Dependent Claim
31 words
The process of claim 13 wherein the hotmelt material comprises at least one thermoplastic polymer selected from the group consisting of isocyanate terminated polymers, silane terminated polymers and siloxane terminated polymers.
Claim 45
Dependent Claim
14 words
The process of claim 1, 2 or 3 wherein the hotmeltmaterial comprises polyurethane prepolymers.
Claim 46
Dependent Claim
12 words
The process of claim 4 wherein the hotmelt material comprises polyurethane prepolymers.
Claim 47
Dependent Claim
32 words
The process of claim 10 wherein the metal comprises at least one element selected from the group consisting of copper, iron, vanadum, chromium, molybdenum, tungsten, manganese, cobalt, nickel, zinc, cadmium and aluminum.
Claim 48
Dependent Claim
32 words
The process of claim 11 wherein the metal comprises at least one element selected from the group consisting of copper, iron, vanadum, chromium, molybdenum, tungsten, manganese, cobalt, nickel, zinc, cadmium and aluminum.
Claim 49
Dependent Claim
12 words
The structure produced by the process of claim 1, 2 or 3.
Claim 50
Dependent Claim
9 words
The structure produced by the process of claim 6.
Claim 51
Dependent Claim
9 words
The structure produced by the process of claim 10.
Claim 52
Dependent Claim
9 words
The structure produced by the process of claim 12.
Claim 53
Dependent Claim
9 words
The structure produced by the process of claim 15.
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) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |