US3615975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding materials using amine-modified aldehyde condensation polymer mixture of epoxy resin and methylene donor and a foaming agent
Assignee: Weyerhaeuser Co
•
Filing: 1969-05-05
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Granted: 1971-10-26
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Expires: 1989-05-05
Abstract
Abstract A method of bonding materials, particularly wood, using foamed gap-filling adhesives is disclosed. The adhesives are prepared using amine-modified aldehyde condensation polymers in which a foaming agent or agents have been incorporated. The resins cure rapidly at ambient temperature and make excellent construction adhesives.
Inventors
- 👤 Maurice F Gillern
- 👤 Harlan G Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/08; C08; C08J; C08J9/00; C08J9/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984; Y10T428/31504; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
33 words
The process according to claim 1 wherein said foaming agent is one selected from the group consisting of carbon dioxide liberating compounds, low boiling aliphatic hydrocarbons, low boiling ethers, and polyhalogenated saturated fluorocarbons.
Claim 2
Dependent Claim
114 words
a foaming agent, b. coating said surface of said second material with a second component comprising a mixture of a methylene group donor and an epoxy resin having more than one epoxide group per molecule; and c. bringing said resin coated surface of said first material into intimate contact with said coated surface of said second material to form a glue line therebetween, d. causing said foaming agent to expand the resulting adhesive composition into a cellular foam to fill gaps occurring in said glue line before said adhesive cures to an infusible state, and e. curing said foamed adhesive to form an infusible cellular bonding material securely adhering said surfaces to one another.
Claim 3
Dependent Claim
36 words
a mixture of a methylene group donor and an epoxy resin having more than one epoxide group per molecule, said mixture being provided in an amount sufficient to cause said reaction product to become infusible; and
Claim 4
Dependent Claim
64 words
a foaming agent; B. bringing said adhesive coated surface of said first material into contact with said surface of said second material, C. causing said foaming agent to expand said adhesive composition into a cellular foam before said adhesive cures to an infusible state, and D. curing said foamed adhesive to form an infusible cellular bonding material securely adhering said surfaces to one another.
Claim 5
Dependent Claim
27 words
The process according to claim 1 wherein said foaming agent comprises an alkali or alkaline earth carbonate which, in the presence of an acid, liberates carbon dioxide.
Claim 6
Dependent Claim
32 words
The process according to claim 1 wherein 2 to 50 parts by weight of the foaming agent are incorporated per 100 parts by weight of said reaction product and said mixture combined.
Claim 7
Dependent Claim
30 words
The process according to claim 1 wherein said aldehyde condensation polymer is one selected from the group consisting of formaldehyde condensed with phenol, urea, melamine-urea, acetone, melamine, phenol-resorcinol and resorcinol.
Claim 8
Dependent Claim
28 words
The process according to claim 1 wherein 0.05 to 2.0 parts by weight of said amine are reacted with 1 part by weight of said aldehyde condensation polymer.
Claim 9
Dependent Claim
11 words
The process according to claim 5 wherein said amine comprises m-phenylenediamine.
Claim 10
Dependent Claim
11 words
The process according to claim 5 wherein said amine comprises m-hydroxyaniline.
Claim 11
Dependent Claim
11 words
The process according to claim 5 wherein said amine comprises 1,5-diaminonaphthalene.
Claim 12
Dependent Claim
11 words
The process according to claim 5 wherein said amine comprises 2,6-diaminopyridine.
Claim 13
Dependent Claim
11 words
The process according to claim 5 wherein said amine comprises 4,4''methylenedianiline.
Claim 14
Dependent Claim
35 words
A process of bonding a surface of a first material to a surface of a second material at ambient temperature comprising: a. coating said surface of said first material with a first resin component comprising
Claim 15
Dependent Claim
11 words
The process according to claim 12 wherein said amine comprises m-phenylenediamine.
Claim 16
Dependent Claim
11 words
The process according to claim 12 wherein said amine comprises m-hydroxyaniline.
Claim 17
Dependent Claim
11 words
The process according to claim 12 wherein said amine comprises 1,5-diaminonaphthalene.
Claim 18
Dependent Claim
11 words
The process according to claim 12 wherein said amine comprises 2,6-diaminopyridine.
Claim 19
Dependent Claim
11 words
The process according to claim 12 wherein said amine comprises 4,4''-methylenedianiline.
Claim 20
Dependent Claim
13 words
The process of claim 1 wherein said first and second materials comprise wood.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |