Polyamide and film made from at least one monomolecular layer of

Details Polyamide and film made from at least one monomolecular layer of Polyamide and film made from at least one monomolecular layer of

1989-09-05

1992-11-24

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

4274301, 4274343, 428336, 4284744, 4284747, 528310, 528331, 528335, 528342, 528347, 528348, C08G 6300, C08G 6908

Patent

active

051663074

ABSTRACT:
Polyamides of the general formula [N(A)-X-N(B)-CO-Y-CO-].sub.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 C.sub.1 to C.sub.26 alkyl group and n denotes an integer greater than 4. The said polyamides contain at least one alkyl group of C.sub.6 to C.sub.26 per repeating unit. The groups X and/or Y contain at leat one CH.sub.2 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.

REFERENCES:
patent: 4626468 (1986-12-01), Sundet
patent: 4740396 (1988-04-01), Uekita et al.
patent: 4765897 (1988-08-01), Cadotte et al.
patent: 4879148 (1989-11-01), Neaves et al.
patent: 4966799 (1990-10-01), Lucca et al.

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