US3919142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid polyamide epoxy resin hardener
Assignee: Kao Corp
•
Filing: 1973-12-21
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Granted: 1975-11-11
•
Expires: 1993-12-21
Abstract
Abstract wherein R3 and R4 are H or alkyl having 1-19 carbon atoms), or the dibasic acid prepared by hydrolysis of said ester, or the saturated dibasic acid or ester prepared by hydrogenation of said acid or ester, with (B) polyalkylene polyamine. An epoxy resin hardener consisting of polyamide resin prepared by reacting (A) dibasic acid ester of the formula, R2OOC-CH2-CH2R1-CH2-CH2-COOR2 (wherein R1 is a bivalent vinylidene-type olefin radical having one double bond and R2 is a radical which forms an ester with acrylic acid), which dibasic acid ester is prepared from acrylic ester and vinylidene type olefin
Inventors
- 👤 Schumkichiro Asai
- 👤 Yasuyuki Kawakatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:04
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34; C08L; C08L63/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
15 words
UP TO 50 MOLE % OF DIMER ACID HAVNG 32 TO 44 CARBON ATOMS, AND
Claim 2
Dependent Claim
15 words
UP TO 50 MOLE % OF DIMER ACID HAVNG 32 TO 44 CARBON ATOMS, AND
Claim 3
Dependent Claim
78 words
ALIQUID POLYAMIDE RESIN, USEFUL AS AN EPOXY RESIN HARDENER, CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A CARBOXYLIC ACID OR ESTER REACTANT AND A POLYAMINE REACTANT, REACTED ZT A RATIO OF CARBOXYL EQUIVALENTS TO AMINE EQUIVALENTE OF FROM 1:1.2 TO 1:5.0, AT 110* TO 350*C, FOR FROM 1 TO 10 HOURS, SAID REACTION PRODUCT HAVING A MOLECULAR WEIGHT OF FROM 400 TO 2000, SAID CARBOXYLIC ACID OR ESTER RECTANT CONSISTING ESSENTIALLY OF A. A DIABASIC COMPONENT CONSISTING OF
Claim 4
Dependent Claim
78 words
ALIQUID POLYAMIDE RESIN, USEFUL AS AN EPOXY RESIN HARDENER, CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A CARBOXYLIC ACID OR ESTER REACTANT AND A POLYAMINE REACTANT, REACTED ZT A RATIO OF CARBOXYL EQUIVALENTS TO AMINE EQUIVALENTE OF FROM 1:1.2 TO 1:5.0, AT 110* TO 350*C, FOR FROM 1 TO 10 HOURS, SAID REACTION PRODUCT HAVING A MOLECULAR WEIGHT OF FROM 400 TO 2000, SAID CARBOXYLIC ACID OR ESTER RECTANT CONSISTING ESSENTIALLY OF A. A DIABASIC COMPONENT CONSISTING OF
Claim 5
Dependent Claim
22 words
A polyamide resin according to claim 1, in which one of R3 and R4 is hydrogen and the other thereof is -C(CH3)3.
Claim 6
Dependent Claim
18 words
the balance is a compound or mixture of compounds having the formula R2OOC-CH2-CH2-R1-CH2-CH2-COOR2 wherein R1 has the formula
Claim 7
Dependent Claim
18 words
the balance is a compound or mixture of compounds having the formula R2OOC-CH2-CH2-R1-CH2-CH2-COOR2 wherein R1 has the formula
Claim 8
Dependent Claim
18 words
THE BALANCE IS A COMPOUND OR MIXTURE OF COMPOUNDS HAVING THE FORMULA R2OOC-CH2-CH2-R1-CH2-CH2-COOR2 WHEREIN R1 HAS THE FORMULA
Claim 9
Dependent Claim
18 words
THE BALANCE IS A COMPOUND OR MIXTURE OF COMPOUNDS HAVING THE FORMULA R2OOC-CH2-CH2-R1-CH2-CH2-COOR2 WHEREIN R1 HAS THE FORMULA
Claim 10
Dependent Claim
23 words
A polyamide resin according to claim 2, in which said polyalkylene polyamine is selected from the group consisting of diethylenetriamine, triethylenetetramine and tetraethylenepentamine.
Claim 11
Dependent Claim
20 words
UP TO 50% BY WEIGHT OF A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF AROMATIC POLYAMINES AND ALICYCLIC POLYAMINES, AND
Claim 12
Dependent Claim
20 words
UP TO 50% BY WEIGHT OF A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF AROMATIC POLYAMINES AND ALICYCLIC POLYAMINES, AND
Claim 13
Dependent Claim
20 words
up to 50% by weight of a polyamine selected from the group consisting of aromatic polyamines and alicyclic polyamines, and
Claim 14
Dependent Claim
20 words
up to 50% by weight of a polyamine selected from the group consisting of aromatic polyamines and alicyclic polyamines, and
Claim 15
Dependent Claim
19 words
THE BALANCE IS POLYALKYLENE POLYAMINE HAVING THE FORMULA H2N(CH2CH2NH)NH, WHEREIN N IS AN INTEGER OF FROM 1 TO 5.
Claim 16
Dependent Claim
19 words
THE BALANCE IS POLYALKYLENE POLYAMINE HAVING THE FORMULA H2N(CH2CH2NH)NH, WHEREIN N IS AN INTEGER OF FROM 1 TO 5.
Claim 17
Dependent Claim
19 words
the balance is polyalkylene polyamine having the formula H2N(CH2CH2NH)nH, wherein n is an integer of from 1 to 5.
Claim 18
Dependent Claim
19 words
the balance is polyalkylene polyamine having the formula H2N(CH2CH2NH)nH, wherein n is an integer of from 1 to 5.
Claim 19
Dependent Claim
28 words
A polyamide resin according to claim 3, in which said monobasic acid is a fatty acid or mixture of fatty acids having from 10 to 24 carbon atoms.
Claim 20
Dependent Claim
24 words
A polyamide resin according to claim 4, in which said dibasic component consists of A(2), and said polyamine component consists of said polyalkylene polyamine.
Claim 21
Dependent Claim
54 words
A cured epoxy resin composition obtained by reacting (a) a 1, 2-polyepoxide compound having on the average more than one 1,2-epoxide group in the molecule, with (b) a polyamide as claimed in claim 1, as a curing agent, the weight ratio of (a) to (b) being in the range of from 10:1 to 1:10.
Claim 22
Dependent Claim
20 words
A composition according to claim 6, in which the weight ratio of (a) or (b) is from 1:2 to 1:0.1.
Claim 23
Dependent Claim
52 words
A process of curing a 1,2-polyepoxide compound having on the average more than one 1,2-epoxide group in the molecule, which comprises, incorporating in said 1,2-polyepoxide compound, a polyamide as claimed in claim 1, as a curing agent, the weight ratio of said 1,2-polyepoxide compound to said polyamide being from 10:1 to 1:10.
Claim 24
Dependent Claim
25 words
A process as claimed in claim 8 in which the weight ratio of said 1,2-polyepoxide compound to said polyamide is from 1:2 to 1: 0.1.
References Cited (Backward Citations)
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US3497479A
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US3647765A
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US3637551A
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US3783136A
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |