Poly(urea-amide) from m-xylylenediamine

Details Poly(urea-amide) from m-xylylenediamine Poly(urea-amide) from m-xylylenediamine

1984-11-13

1986-06-24

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

4284744, 4284755, 528335, 528370, C08G 6926, C08G 7102

Patent

active

045968667

ABSTRACT:
Poly(urea-amides) having an inherent viscosity (I.V.) of 0.4 to about 1.2, and having the repeating units ##STR1## wherein with respect to the total moles of II and III, the mol % of II is 5 to 80, preferably 20 to 60, and conversely the mol % of III is 20 to 95, preferably 40 to 80, R is straight chain alkylene of 3 to 10 carbons, preferably 4 carbons, with the proviso that when R contains 3 carbons, not over 50 mol % thereof is present, up to 40 mol %, preferably 0 mil % of R is aromatic, and wherein up to 30 mol %, preferably 0 mol % of I is the para isomer, the remainder being the meta isomer, are valuable for the manufacture of plastics, fibers, films and other shaped objects, especially multilayer laminated structures which have excellent resistance to the transmission of oxygen, carbon dioxide, and other gases.

REFERENCES:
patent: 3534001 (1970-10-01), Bouboulis et al.

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