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US5071914A
Expired / Lapsed
US
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Thermoplastic hot melt adhesive containing epoxy adduct
Assignee: HB Fuller Licensing and Financing Inc
•
Filing: 1989-08-17
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Granted: 1991-12-10
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Expires: 2009-08-17
Abstract
Abstract The adhesive properties of a hot melt adhesive, comprising a base polymer and a tackifying resin, can be improved by introducing into the hot melt adhesive an epoxy adduct comprising the reaction product between a compound such as a polymer having at least one active hydrogen and an epoxy compound.
Inventors
- 👤 John M. Zimmel
- 👤 Pamela M. Klinkenberg
- 👤 William L. Bunnelle
- 👤 Keith C. Knutson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:15
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C09J201/00; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/28; Y; Y10; Y10S; Y10S206/00; Y10S206/813
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
102 words
A hot melt adhesive composition suitable for providing improved adhesivity to hard-to-stick surface including fluorocarbon surfaces, which comprises: (a) an effective amount of a thermoplastic polymer to form a hot melt adhesive; (b) an effective tackifying amount of a tackifying resin; and (c) an effective bond improving amount of a hot melt adhesive additive composition comprising the reaction product of: (i) a compound having at least one free epoxy reactive hydrogen other than a dimer acid, (ii) an epoxy resin, and (iii) a dimer acid wherein the reference of the additive composition are used in proportion that prevent crosslinking or gel formation.
Claim 2
Dependent Claim
102 words
A hot melt adhesive composition suitable for providing improved adhesivity to hard-to-stick surface including fluorocarbon surfaces, which comprises: (a) an effective amount of a thermoplastic polymer to form a hot melt adhesive; (b) an effective tackifying amount of a tackifying resin; and (c) an effective bond improving amount of a hot melt adhesive additive composition comprising the reaction product of: (i) a compound having at least one free epoxy reactive hydrogen other than a dimer acid, (ii) an epoxy resin, and (iii) a dimer acid wherein the reference of the additive composition are used in proportion that prevent crosslinking or gel formation.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the thermoplastic polymer comprises an ethylene-vinyl acetate copolymer.
Claim 4
Dependent Claim
14 words
The adhesive composition of claim 1 wherein the thermoplastic polymer comprises a polyethyloxazoline polymer.
Claim 5
Dependent Claim
15 words
The composition of claim 3 wherein the hydroxy compound comprises a hydroxy containing amine compound.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein the alkanol amine compound is an ethanol amine compound.
Claim 7
Dependent Claim
12 words
The composition of claim 5 wherein the alkanol amine compound comprises monoethanolamine.
Claim 8
Dependent Claim
16 words
The composition of claim 4 wherein the alkanol amine compound comprises monoethanolamine, diethanolamine, or mixtures thereof.
Claim 9
Dependent Claim
13 words
The composition of claim 5 wherein the ethanol amine compound comprises diethanol amine.
Claim 10
Dependent Claim
21 words
The composition of claim 1 wherein the epoxy compound comprises the glycidyl adduct of the condensation product of formaldehyde and phenol.
Claim 11
Dependent Claim
17 words
The composition of claim 9 wherein the epoxy compound comprises a glycidyl adduct of a bisphenol compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |