Patent US4873311A successfully refreshed from Google Patents.
US4873311A
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Water dispersible polyamide ester
Assignee: NL CHEMICALS INTERNATIONAL A CORP OF VA
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Filing: 1988-02-05
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Granted: 1989-10-10
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Expires: 2008-02-05
Abstract
Abstract The present invention comprises a water dispersible polyamide ester useful in flexographic ink formulations and Cold Seal Release Lacquers. A high AV polyamide is reacted with a polyol to increase molecular weight via ester formation. The polyamide ester is then reacted with a cyclic carboxylic anhydride. A general formula for the product resin is as follows: ##STR1## wherein x is an integer of 1-5; R'=a polyamide ester chain of molecular weight 500-2000; where y is an integer of 1-3; R 2 is independently at each occurrence the residue of a cyclic carboxylic anhydride bearing at least one free carboxyl group or ##STR2## where R 3 is independently at each occurrence R' or a polyamide segment of up to 2000 MW.
Inventors
- 👤 Walter K. Bornack, Jr.
- 👤 Keith R. McNally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:16
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C08; C08G; C08G69/00; C08G69/48; C09D177/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
69 words
A composition having the formula: ##STR8## wherein x is an integer of 1-5; R'=a polyamide ester chain of molecular weight 500-2000; where y is an integer of 1-3; R 2 is independently at each occurrence the residue of a cyclic carboxylic anhydride bearing at least one free carboxyl group or ##STR9## where R 3 is independently at each occurrence R' or a polyamide segment of up to 2000 MW.
Claim 2
Dependent Claim
69 words
A composition having the formula: ##STR8## wherein x is an integer of 1-5; R'=a polyamide ester chain of molecular weight 500-2000; where y is an integer of 1-3; R 2 is independently at each occurrence the residue of a cyclic carboxylic anhydride bearing at least one free carboxyl group or ##STR9## where R 3 is independently at each occurrence R' or a polyamide segment of up to 2000 MW.
Claim 3
Dependent Claim
45 words
A reaction product comprising: about 67-92 weight percent polyamide resin having an acid value of between about 50-150 reacted with about 3-11 weight percent polyols; and then subsequently reacted with about 5-22 weight percent carboxylic anhydrides wherein the reaction product is a water dispersible polyamide.
Claim 4
Dependent Claim
45 words
A reaction product comprising: about 67-92 weight percent polyamide resin having an acid value of between about 50-150 reacted with about 3-11 weight percent polyols; and then subsequently reacted with about 5-22 weight percent carboxylic anhydrides wherein the reaction product is a water dispersible polyamide.
Claim 5
Dependent Claim
23 words
The reaction product of claim 2 wherein the polyamide resin comprises at least one of Dimer acid, 2-n-hexyl-5-(7-carboxyl-n-heptyl)-cyclohex-3-ene carboxylic acid, IPA and polyamines.
Claim 6
Dependent Claim
69 words
The reaction product of claim 3 wherein the polyamide resin has the following structure: ##STR10## where R may be in the alternative an aromatic group from IPA or an aliphatic group of greater than about 18 carbon atoms and R 5 may be in the alternative an aliphatic group from at least one of IPDA, HMDA, EDA, DCH, MXDA or 2-methyl-pentamethylene diamine; and n is an integer of 1-10.
Claim 7
Dependent Claim
11 words
The reaction product of claim 3 wherein the polyamines are diamines.
Claim 8
Dependent Claim
18 words
The reaction product of claim 5 wherein the diamines comprises at least one of IPDA, MXDA and EDA.
Claim 9
Dependent Claim
27 words
The reaction product of claim 2 wherein the carboxylic anhydride comprises at least one of succinic anhydride, dodecenyl succinic anhydride, trimellitic anhydride, tetrahydrophthalic anhydride or phthalic anhydride.
Claim 10
Dependent Claim
20 words
The reaction product of claim 2 wherein the polyol comprises at least one of trimethylol propane, glycerine or trimethylol ethane.
Claim 11
Dependent Claim
19 words
The polyamide ester of claim 2 wherein the polyol is trimethylol propane and the carboxylic anhydride is trimellitic anhydride.
Claim 12
Dependent Claim
11 words
A water dispersible polyamide ester comprising the composition of claim 2.
Claim 13
Dependent Claim
9 words
An ink formulation comprising the composition of claim 2.
Claim 14
Dependent Claim
10 words
A flexographic ink formulation comprising the composition of claim 2.
Claim 15
Dependent Claim
9 words
The lacquer formulation comprising the composition of claim 2.
Claim 16
Dependent Claim
14 words
A water based Cold Seal Release Lacquer formulation comprising the composition of claim 2.
Claim 17
Dependent Claim
9 words
An aqueous dispersion comprising the composition of claim 1.
Claim 18
Dependent Claim
10 words
An aqueous dispersion comprising the reaction product of claim 2.
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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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |