US5166307A
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Polyamide and film made from at least one monomolecular layer of a polyamide
Assignee: Hoechst AG
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Filing: 1989-09-05
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Granted: 1992-11-24
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Expires: 2009-09-05
Abstract
Abstract Polyamides of the general formula [N(A)-X-N(B)-CO-Y-CO-]n are described, in which Y denotes a divalent group, X a divalent radical whose chain contains at least two carbon atoms, A and B independently of one another denote H or a C1 to C26 alkyl group and n denotes an integer greater than 4. The said polyamides contain at least one alkyl group of C6 to C26 per repeating unit. The groups X and/or Y contain at leat one CH2 group in the chain. The polyamides are prepared by reaction of a diamine of the formula NHA-X-NHB with an about equimolar amount of a reactive derivative of a dicarboxylic acid of the formula COOH-Y-COOH. The polyamides obtained can be used in order to prepare highly ordered monomolecular LB films on a support. For this purpose, the polyamide is dissolved in a volatile organic solvent which is immiscible with water and the solution is spread on the water/air interface. After evaporation of the solvent the layer is compressed and transferred to a solid support by the LB technique. The film is very stable and can be used to prepare optical waveguide systems, filters for optical purposes or protective layers.
Inventors
- 👤 Harald Cherdron
- 👤 Werner Prass
- 👤 Ude Scheunemann
- 👤 Donald Lupo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:29
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/14; B; B05; B05D; B05D1/00; B05D1/18; B05D1/20; B05D1/202; B82; B82Y; B82Y30/00; B82Y40/00; C08G69/00; C08G69/02; C08G69/26; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31725; Y10T428/31728
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
101 words
A polyamide of the formula ##STR48## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13, and n is an integer greater than 4.
Claim 2
Dependent Claim
101 words
A polyamide of the formula ##STR48## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13, and n is an integer greater than 4.
Claim 3
Dependent Claim
18 words
A polyamide as claimed in claim 1, wherein R 4 is an alkyl group having 6-24 carbon atoms.
Claim 4
Dependent Claim
18 words
A polyamide as claimed in claim 1, wherein R 5 is an alkyl group having 6-24 carbon atoms.
Claim 5
Dependent Claim
18 words
A polyamide as claimed in claim 1, wherein R 6 is an alkyl group having 6-24 carbon atoms.
Claim 6
Dependent Claim
18 words
A polyamide as claimed in claim 4, wherein R 6 is an alkyl group having 14-24 carbon atoms.
Claim 7
Dependent Claim
20 words
The polyamide as claimed in claim 1, wherein the aromatic group represents a 3,5-linked phenyl radical substituted in the 1-position.
Claim 8
Dependent Claim
128 words
A layer element having a solid layer support and at least one solid, thin layer of defined uniform orderly structure applied thereto, which layer comprises at least one polyamide of the formula ##STR49## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13 and n is an integer greater than 4.
Claim 9
Dependent Claim
128 words
A layer element having a solid layer support and at least one solid, thin layer of defined uniform orderly structure applied thereto, which layer comprises at least one polyamide of the formula ##STR49## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13 and n is an integer greater than 4.
Claim 10
Dependent Claim
121 words
The layer element having a solid layer support as claimed in claim 7, wherein the polyamide contains at least one compound of the general formula ##STR50## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-24 carbon atoms, R 5 is hydrogen or an alkyl group having 6-24 carbon atoms, R 6 is an alkyl group having 6-24 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13 and n is an integer greater than 4.
Claim 11
Dependent Claim
23 words
The layer element having a solid support as claimed in claim 8, wherein R 6 is an alkyl group having 14-24 carbon atoms.
Claim 12
Dependent Claim
130 words
A layer element having a solid layer support and at least one solid, thin layer of defined uniform orderly structure applied thereto, which layer comprises at least one polyamide of the general formula (II) ##STR51## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13 and n is an integer greater than 4.
Claim 13
Dependent Claim
130 words
A layer element having a solid layer support and at least one solid, thin layer of defined uniform orderly structure applied thereto, which layer comprises at least one polyamide of the general formula (II) ##STR51## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13 and n is an integer greater than 4.
Claim 14
Dependent Claim
121 words
The layer element having a solid layer support as claimed in claim 7, wherein the polyamide contains at least one compound of the general formula ##STR52## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13 and n is an integer greater than 4.
Claim 15
Dependent Claim
157 words
A process for the preparation of a layer element as claimed in claim 7, which comprises dissolving at least one polyamide of the formula ##STR53## in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , R 4 is an alkyl group having 6-26 carbon atoms, R 5 is hydrogen or an alkyl group having 1-26 carbon atoms, R 6 is an alkyl group having 6-26 carbon atoms, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13, and n is an integer greater than 4, in a volatile organic solvent which is immiscible with water, spreading the solution on the water/air interface, compressing the layer after evaporation of the solvent and transferring it to a solid layer support by the Langmuir-Blodgett technique.
Claim 16
Dependent Claim
24 words
The layer element having a solid layer support as claimed in claim 7, wherein E in the polyamide is --CO 2 R 4 .
Claim 17
Dependent Claim
121 words
The process as claimed in claim 12, wherein a compound of the general formula ##STR54## is used as polyamide, in which formula E is OR 2 or --NR 2 R 3 , R 2 is C 6 -C 26 alkyl, R 3 is H or C 1 -C 26 alkyl, Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, b is an integer from 1 to 13, and n is an integer greater than 4, and the coated support is kept at a temperature of 150° to 400° C. for a period which is sufficient in order to reduce the thickness of the layer by at least 5%.
Claim 18
Dependent Claim
19 words
The process as claimed in claim 14, wherein in the compound, R 2 is C 6 -C 24 alkyl.
Claim 19
Dependent Claim
19 words
The process as claimed in claim 14, wherein in the compound, R 3 is C 1 -C 24 alkyl.
Claim 20
Dependent Claim
99 words
A process for the preparation of a polyamide as claimed in claim 1, which comprises reacting a diamine of the formula ##STR55## with approximately equimolar amounts of a dicarboxylic acid of the formula COOH--Y--COOH or an activated derivative of this dicarboxylic acid, in which E is --CO 2 R 4 , --CONR 4 R 5 , --NR 4 R 5 , OR 6 or OCOR 6 , and Y is (CH 2 ) a or (CH 2 OCH 2 ) b , a is an integer from 1 to 12, and b is an integer from 1 to 13.
Claim 21
Dependent Claim
32 words
The process as claimed in claim 14, wherein at least two monolayers containing a polyamide are applied to the layer support and then layer support with coating are heated to 150°-400° C.
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) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |