US3660217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb and method of producing same
Assignee: WR Grace and Co
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Filing: 1969-02-20
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Granted: 1972-05-02
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Expires: 1989-02-20
Abstract
Abstract This invention relates to a method and means for laminating superimposed layers of the same or different material by adhering said layers with a novel curable liquid adhesive composition comprising a polyene and a polythiol which, on exposure to ionizing radiation or a free radical generating agent, cures to a solid adhesive under ambient conditions. The novel adhesive can be used in bonding structural cellular material such as honeycomb cores and facings.
Inventors
- 👤 Clifton L Kehr
- 👤 Walter R Wszolek
- 👤 Christian B Lundsager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:44
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B29; B29D; B29D99/00; B29D99/0089; B31; B31D; B31D3/00; B31D3/02; B31D3/0223; B31D3/0269; B32B27/00; B32B27/12; B32B37/00; B32B37/12; B32B7/00; B32B7/04; B32B7/12; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/6715; C08G18/83; C08G18/834; C08G18/835; C08G75/00; C08G75/02; C08G75/04; C08G75/045; C08G75/12; C09; C09J; C09J175/00; C09J175/04; C09J175/14; B32B2250/00; B32B2250/40; B32B2305/00; B32B2305/02; B32B2305/024; B32B2315/00; B32B2315/08; B32B2315/085; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/24802; Y10T428/24851
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
109 words
The structure according to claim 1 wherein the polyene is formed by reacting either A. an organic epoxide containing at least two groups in its structure with a member of the group consisting of hydrazine, primary amines, secondary amines, tertiary amine salts, organic alcohols and organic acids wherein said group members contain at least one organic substituent containing a reactive ethylenically or ethynylically unsaturated group, or B. an organic epoxide containing at least one organic substituent containing a reactive ethylenically or ethynylically unsaturated group with a member of the group consisting of hydrazine and an organic material containing at least two active hydrogen functions from the group consisting of
Claim 2
Dependent Claim
23 words
maintaining said superposed honeycomb cores in contact for a time sufficient to cure the adhesive and effect bonding between said unexpanded honeycomb cores.
Claim 3
Dependent Claim
28 words
The structure according to claim 1 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of allyl hydrazine.
Claim 4
Dependent Claim
28 words
The structure according to claim 1 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of allyl amine.
Claim 5
Dependent Claim
28 words
The structure according to claim 1 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of diallyl amine.
Claim 6
Dependent Claim
12 words
The structure according to claim 1 wherein the polyene is triallyl urea.
Claim 7
Dependent Claim
11 words
The structure according to claim 1 wherein the polyene is diallylallylphosphonate.
Claim 8
Dependent Claim
28 words
The structure according to claim 1 wherein the polythiol is a member of the group consisting of pentaerythritol tetrakis ( Beta -mercaptopropionate) and trimethylolpropane tris ( Beta -mercaptopropionate).
Claim 9
Dependent Claim
153 words
The process of making a honeycomb structure from a laminates stack of web material which comprises A. applying to sections of the web material, lines of an adhesive composition consisting essentially of a polyene containing at least two reactive unsaturated carbon to carbon bonds per molecule and a polythiol containing at least two thiol groups per molecule, the total combined functionality of (a) the reactive unsaturated carbon to carbon bonds per molecule in the polyene and (b) the thiol groups per molecule in the polythiol being greater than 4; B. forming a plurality of said sections in a stack with said lines of adhesive between adjacent sections arranged in staggered relationship; C. subjecting said stack to ionizing radiation at a dose rate in the range 0.0001 to 10.0 megarads/second to cure the adhesive and bond said sections and D. expanding said stack to form a honeycomb structure having a plurality of hollow cells.
Claim 10
Dependent Claim
110 words
The process according to claim 9 wherein the polyene is formed by reacting either A. an organic epoxide containing at least two groups in its structure with a member of the group consisting of hydrazine, primary amines, secondary amines, tertiary amines amine salts, organic alcohols and organic acids wherein said group members contain at least one organic substituent containing a reactive ethylenically or ethynylically unsaturated group, or B. an organic epoxide containing at least one organic substituent containing a reactive ethylenically or ethynylically unsaturated group with a member of the group consisting of hydrazine and an organic material containing at least two active hydrogen functions from the group consisting of
Claim 11
Dependent Claim
28 words
The process according to claim 10 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of allyl hydrazine.
Claim 12
Dependent Claim
28 words
The process according to claim 10 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of allyl amine.
Claim 13
Dependent Claim
28 words
The process according to claim 10 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of diallyl amine.
Claim 14
Dependent Claim
12 words
The process according to claim 9 wherein the polyene is triallyl urea.
Claim 15
Dependent Claim
11 words
The process according to claim 9 wherein the polyene is diallylallylphosphonate.
Claim 16
Dependent Claim
28 words
The process according to claim 9 wherein the polythiol is a member of the group consisting of pentaerythritol tetrakis ( Beta -mercaptopropionate) and trimethylolpropane tris ( Beta -mercaptopropionate).
Claim 17
Dependent Claim
13 words
The process of bonding at least two unexpanded honeycomb cores together which comprises
Claim 18
Dependent Claim
28 words
The process according to claim 17 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of allyl hydrazine.
Claim 19
Dependent Claim
28 words
The process according to claim 17 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of allyl amine.
Claim 20
Dependent Claim
28 words
The process according to claim 17 wherein the polyene is the reaction product of 1 mole of diglycidyl ether of Bisphenol A and 2 moles of diallyl amine.
Claim 21
Dependent Claim
12 words
The process according to claim 17 wherein the polyene is triallyl urea.
Claim 22
Dependent Claim
11 words
The process according to claim 17 wherein the polyene is diallyallylphosphonate.
Claim 23
Dependent Claim
28 words
The process according to claim 17 wherein the polythiol is a member of the group consisting of pentaerythritol tetrakis ( Beta -mercaptopropionate) and trimethylolpropane tris ( Beta -mercaptopropionate).
Claim 24
Dependent Claim
35 words
The process according to claim 17 wherein the free radical generating agent is selected from the group consisting of organic peroxides, azo compounds, carbazates, metal salts capable of redox reactions, dioximes and diesters of dioximes.
Claim 25
Dependent Claim
109 words
The process according to claim 17 wherein the polyene is formed By reacting either A an organic epoxide containing at least two groups in its structure with a member of the group consisting of hydrazine, primary amines, secondary amines, tertiary amine salts, organic alcohols and organic acids wherein said group members contain at least one organic substituent containing a reactive ethylenically or ethynylically unsaturated group, or B. an organic epoxide containing at least one organic substituent containing a reactive ethylenically or ethynylically unsaturated group with a member of the group consisting of hydrazine and an organic material containing at least two active hydrogen functions from the group consisting of
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |