US3683044A
Expired / Lapsed
US
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Heat-curable composition comprising polyglycidyl xylylene-diamine and process for preparation of polyglycidyl xylylenediamine
Assignee: Japan Gas Chemical Co Inc
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Filing: 1970-12-29
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Granted: 1972-08-08
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Expires: 1990-12-29
Abstract
Abstract A process for preparing a novel polyglycidyl xylylenediamine having an epoxy equivalent of 90 - 200 which comprises reacting xylylenediamine with epichlorohydrin and dehydrochlorinating the resulting interdediate with an alkali. A heat-curable resinous composition comprising said polyglycidyl xylylenediamine exhibits a low viscosity suitable for casting and adhesive, and a cured product therefrom has a high heat distortion temperature.
Inventors
- 👤 Ching Yun Huang
- 👤 Kazuo Ueno
- 👤 Keizo Masawaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3227
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
28 words
The heat-curable resinous composition set forth in claim 1, wherein said curing agent is selected from the group consisting of aliphatic polyamines, aromatic polyamines and organic carboxylic anhydrides.
Claim 2
Dependent Claim
27 words
The heat-curable resinous composition set forth in claim 1, wherein the epoxy equivalent of the said polyglycidyl xylylenediamine is within the range of from 90 to 160.
Claim 3
Dependent Claim
60 words
A heat-curable resinous composition comprising 5 to 500 parts by weight of a para- or meta- polyglycidyl xylylenediamine or mixtures thereof, said polyglycidyl xylylenediamine having an epoxy equivalent within the range of from 90 to 200, and 100 parts by weight of a glycidyl ether of a polyhydric phenol having a 1,2-epoxy equivalency greater than 1, and a curing agent.
Claim 4
Dependent Claim
37 words
The heat-curable resinous composition set forth in claim 4, wherein the polyglycidyl xylylenediamine is present in the composition in an amount of 10 to 100 parts by weight per 100 parts by weight of the glycidyl ether.
Claim 5
Dependent Claim
28 words
The heat-curable resinous composition set forth in claim 4, wherein the curing agent is selected from the group consisting of aliphatic polyamines, aromatic polyamines and organic carboxylic anhydrides.
Claim 6
Dependent Claim
27 words
The heat-curable resinous composition set forth in claim 4, wherein the epoxy equivalent of the said polyglycidyl xylylenediamine is within a range of from 90 to 160.
Claim 7
Dependent Claim
103 words
A process for the preparation of a para- or meta-polyglycidyl xylylenediamine or mixtures thereof, said polyglycidyl xylylenediamine having an epoxy equivalent of 90 to 200, which comprises reacting para- or meta- xylylenediamine or mixtures thereof with 3 - 8 moles, per mole of xylylenediamine, of epichlorohydrin at a temperature of 0* to 100* C to form a xylylene chlorohydrin diamine intermediate, said reaction being conducted in the presence of an aromatic hydrocarbon solvent and water, whereby the water is used in an amount of about 10 to 30 milliliters per mole of xylylenediamine, and dehydrochlorinating said intermediate by reacting it with an alkali.
Claim 8
Dependent Claim
24 words
The process set forth in claim 8, wherein epichlorohydrin is used in an amount of 3 - 6 moles per mole of the xylylenediamine.
Claim 9
Dependent Claim
23 words
The process set forth in claim 8, wherein the dehydrochlorination reaction is conducted under reduced pressure while removing water from tHe reaction system.
Claim 10
Dependent Claim
20 words
The process set forth in claim 8, wherein the reaction of the xylylenediamine with epichlorohydrin is conducted at 30*-60* C.
Claim 11
Dependent Claim
20 words
The process set forth in claim 8, wherein the resulting polyglycidyl xylylenediamine has an epoxy equivalent of 90 to 160.
Claim 12
Dependent Claim
27 words
The process set forth in claim 8, wherein the dehydrochlorination reaction is conducted while adding the alkali little by little in the form of an aqueous solution.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |