Biocompatible poly-(ether-urethane-urea) and process for its pre

Details Biocompatible poly-(ether-urethane-urea) and process for its pre Biocompatible poly-(ether-urethane-urea) and process for its pre

1983-06-16

1984-11-27

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

3 1, C08G 1838

Patent

active

044852274

ABSTRACT:
An improved biocompatible and hemocompatible segmented poly-(ether-urethane-urea) is prepared by a process which comprises condensing an alkylene polyether diol of molecular weight of 500 to 6000 with substantially two equivalents of an aryl, aralkyl, or alkyl diisocyanate of 6 to 20 carbon atoms; condensing the thus-formed .alpha.,.OMEGA.-diisocyanato poly-(ether-urethane) with a substantially equivalent proportion of a primary alkyl diamine of 2 to 6 carbon atoms until a degree of condensation of about 5 to 20 is achieved; condensing the resulting poly-(ether-urethane-urea) with a primary alkyl amine or diamine of up to 6 carbon atoms in an amount substantially equivalent to the free isocyanate content of the poly-(ether-urethane-urea); and condensing the amine-treated poly-(ether-urethane-urea) with an amine-reacting agent in an amount substantially equivalent to the free amine content of the amine-treated poly-(ether-urethane-urea). The polymer is especially suitable for fabricating replacements for damaged cardiovascular and urinary tract vessels.

REFERENCES:
patent: 4173689 (1979-08-01), Lyman

Affiliated with

Also associated with

Rating

Biocompatible poly-(ether-urethane-urea) and process for its pre does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Biocompatible poly-(ether-urethane-urea) and process for its pre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biocompatible poly-(ether-urethane-urea) and process for its pre will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2135144