Patent US4574145A successfully refreshed from Google Patents.
US4574145A
Expired / Lapsed
US
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Epoxy curing agents and method for making them
Assignee: Air Products and Chemicals Inc
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Filing: 1984-09-28
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Granted: 1986-03-04
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Expires: 2004-09-28
Abstract
Abstract A new class of epoxy curing agents has been discovered that utilizes the monomer of (a) urea-formaldehyde, (b) phenol modified urea-formaldehyde, or (c) thiourea-formaldehyde as the center of a polyamine molecule. The ether monomers are reacted with conventional aliphatic, cycloaliphatic, and aromatic polyamines to split off alcohol and water-yielding urea-formaldehyde etc., polyamine epoxy curing agents.
Inventors
- 👤 Lowell O. Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:32
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C07C275/20; C07C275/24; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/043; C08G12/046; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/08; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/62; C08G59/621; C08G59/623
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
103 words
##STR27## where X 1 is ##STR28## and X 2 is X 1 or ##STR29## where R 1 is one of the following: ##STR30## x varying from about 2 to about 6 ##STR31## where X+Y+Z=5.3 ##STR32## where a+c=3.5 and b=13.5 ##STR33## (o) mixture of ##STR34## R 2 and R 3 are both H where R 1 is any of (a) to (o) and when R 1 is (p), either R 2 or R 3 , but not both, is C 18 H 35 , while the other is H, and R 4 is H or an alkyl radical with one to nine carbon atoms.
Claim 2
Dependent Claim
103 words
##STR27## where X 1 is ##STR28## and X 2 is X 1 or ##STR29## where R 1 is one of the following: ##STR30## x varying from about 2 to about 6 ##STR31## where X+Y+Z=5.3 ##STR32## where a+c=3.5 and b=13.5 ##STR33## (o) mixture of ##STR34## R 2 and R 3 are both H where R 1 is any of (a) to (o) and when R 1 is (p), either R 2 or R 3 , but not both, is C 18 H 35 , while the other is H, and R 4 is H or an alkyl radical with one to nine carbon atoms.
Claim 3
Dependent Claim
45 words
##STR35## where X 1 is ##STR36## were R 1 is one of the following: ##STR37## x varying from about 2 to about 6 ##STR38## where X+Y+Z=5.3 ##STR39## where a+c=3.5 and b=13.5 ##STR40## (o) mixture of ##STR41## and R 2 and R 3 are both H.
Claim 4
Dependent Claim
45 words
##STR35## where X 1 is ##STR36## were R 1 is one of the following: ##STR37## x varying from about 2 to about 6 ##STR38## where X+Y+Z=5.3 ##STR39## where a+c=3.5 and b=13.5 ##STR40## (o) mixture of ##STR41## and R 2 and R 3 are both H.
Claim 5
Dependent Claim
64 words
##STR42## where X 1 is ##STR43## and X 2 is ##STR44## where R 1 is one of the following: ##STR45## x varying from about 2 to about 6 ##STR46## where X+Y+Z=5.3 ##STR47## where a+c=3.5 and b=13.5 ##STR48## (o) mixture of ##STR49## R 2 and R 3 are both H, and R 4 is H or an alkyl radical with one to nine carbon atoms.
Claim 6
Dependent Claim
64 words
##STR42## where X 1 is ##STR43## and X 2 is ##STR44## where R 1 is one of the following: ##STR45## x varying from about 2 to about 6 ##STR46## where X+Y+Z=5.3 ##STR47## where a+c=3.5 and b=13.5 ##STR48## (o) mixture of ##STR49## R 2 and R 3 are both H, and R 4 is H or an alkyl radical with one to nine carbon atoms.
Claim 7
Dependent Claim
61 words
##STR50## where X 1 is ##STR51## and X 2 is X 1 or ##STR52## where R 1 is --CH 2 --CH 2 --CH 2 , either R 2 or R 3 , but not both, being C 18 H 35 , while the other is H, and R 4 is H or an alkyl radical with one to nine carbon atoms.
Claim 8
Dependent Claim
61 words
##STR50## where X 1 is ##STR51## and X 2 is X 1 or ##STR52## where R 1 is --CH 2 --CH 2 --CH 2 , either R 2 or R 3 , but not both, being C 18 H 35 , while the other is H, and R 4 is H or an alkyl radical with one to nine carbon atoms.
Claim 9
Dependent Claim
6 words
##STR53## where R 1 is ##STR54##
Claim 10
Dependent Claim
6 words
##STR53## where R 1 is ##STR54##
Claim 11
Dependent Claim
6 words
##STR55## where R 1 is ##STR56##
Claim 12
Dependent Claim
6 words
##STR55## where R 1 is ##STR56##
Claim 13
Dependent Claim
18 words
##STR57## where R 1 is --CH 2 --CH 2 --CH 2 --CH 2 --CH 2 --CH 2 --.
Claim 14
Dependent Claim
18 words
##STR57## where R 1 is --CH 2 --CH 2 --CH 2 --CH 2 --CH 2 --CH 2 --.
Claim 15
Dependent Claim
22 words
##STR58## where R 1 is --CH(CH 3 )--CH 2 --O--CH 2 --CH(CH 3 )--X X varying from about 2 to about 6.
Claim 16
Dependent Claim
22 words
##STR58## where R 1 is --CH(CH 3 )--CH 2 --O--CH 2 --CH(CH 3 )--X X varying from about 2 to about 6.
Claim 17
Dependent Claim
10 words
##STR59## where R 1 is R1 ? ##STR60## where X+Y+Z=5.3.
Claim 18
Dependent Claim
10 words
##STR59## where R 1 is R1 ? ##STR60## where X+Y+Z=5.3.
Claim 19
Dependent Claim
10 words
##STR61## where R 1 is ##STR62## where a+c=3.5 and b=13.5.
Claim 20
Dependent Claim
10 words
##STR61## where R 1 is ##STR62## where a+c=3.5 and b=13.5.
Claim 21
Dependent Claim
6 words
##STR63## where R 1 is ##STR64##
Claim 22
Dependent Claim
6 words
##STR63## where R 1 is ##STR64##
Claim 23
Dependent Claim
6 words
##STR65## where R 1 is ##STR66##
Claim 24
Dependent Claim
6 words
##STR65## where R 1 is ##STR66##
Claim 25
Dependent Claim
6 words
##STR67## where R 1 is ##STR68##
Claim 26
Dependent Claim
6 words
##STR67## where R 1 is ##STR68##
Claim 27
Dependent Claim
6 words
##STR69## where R 1 is ##STR70##
Claim 28
Dependent Claim
6 words
##STR69## where R 1 is ##STR70##
Claim 29
Dependent Claim
6 words
##STR71## where R 1 is ##STR72##
Claim 30
Dependent Claim
6 words
##STR71## where R 1 is ##STR72##
Claim 31
Dependent Claim
6 words
##STR73## where R 1 is ##STR74##
Claim 32
Dependent Claim
6 words
##STR73## where R 1 is ##STR74##
Claim 33
Dependent Claim
6 words
##STR75## where R 1 is ##STR76##
Claim 34
Dependent Claim
6 words
##STR75## where R 1 is ##STR76##
Claim 35
Dependent Claim
6 words
##STR77## where R 1 is ##STR78##
Claim 36
Dependent Claim
6 words
##STR77## where R 1 is ##STR78##
Claim 37
Dependent Claim
9 words
##STR79## where R 1 is a mixture of ##STR80##
Claim 38
Dependent Claim
9 words
##STR79## where R 1 is a mixture of ##STR80##
Claim 39
Dependent Claim
69 words
The non-gel reaction product of about two to about four moles of an aliphatic, cycloaliphatic, or aromatic polyamine with about one mole of a monomer of (a) urea-formaldehyde ether, (b) a phenolic substituted monomer of urea-formaldehyde ether, or (c) thiourea-formaldehyde ether, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 40
Dependent Claim
69 words
The non-gel reaction product of about two to about four moles of an aliphatic, cycloaliphatic, or aromatic polyamine with about one mole of a monomer of (a) urea-formaldehyde ether, (b) a phenolic substituted monomer of urea-formaldehyde ether, or (c) thiourea-formaldehyde ether, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 41
Dependent Claim
63 words
The non-gel reaction product of about two to about four moles of an aliphatic polyamine with about one mole of a monomer of (a) urea-formaldehyde ether, (b) phenolic substituted urea-formaldehyde ether, or (c) thiourea-formaldehyde ether, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 42
Dependent Claim
63 words
The non-gel reaction product of about two to about four moles of an aliphatic polyamine with about one mole of a monomer of (a) urea-formaldehyde ether, (b) phenolic substituted urea-formaldehyde ether, or (c) thiourea-formaldehyde ether, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 43
Dependent Claim
63 words
The non-gel reaction product of about two to about four moles of a cycloaliphatic polyamine with about one mole of a monomer of (a) urea-formaldehyde ether, (b) phenolic substituted urea-formaldehyde ether, or (c) thiourea-formaldehyde ether, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 44
Dependent Claim
63 words
The non-gel reaction product of about two to about four moles of a cycloaliphatic polyamine with about one mole of a monomer of (a) urea-formaldehyde ether, (b) phenolic substituted urea-formaldehyde ether, or (c) thiourea-formaldehyde ether, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 45
Dependent Claim
51 words
The non-gel reaction product of about two to about four moles of an aromatic polyamine with about one mole of urea-formaldehyde ether monomer, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 46
Dependent Claim
51 words
The non-gel reaction product of about two to about four moles of an aromatic polyamine with about one mole of urea-formaldehyde ether monomer, in which the ether group of the ether molecule is split and a carbon-nitrogen bond to an amine group is formed at the site of the ether splitting.
Claim 47
Dependent Claim
1 words
##STR81##
Claim 48
Dependent Claim
1 words
##STR81##
Claim 49
Dependent Claim
19 words
The reaction product of about four moles of monoethanol amine with one mole of a monomer of urea-formaldehyde ether.
Claim 50
Dependent Claim
19 words
The reaction product of about four moles of monoethanol amine with one mole of a monomer of urea-formaldehyde ether.
References Cited (Backward Citations)
US3931110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |