Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-01-21
1978-05-02
Anderson, Harold D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 302, 260 306R, 260 18N, 260 308R, 260 308DS, 260 312N, 260 326NA, 260 334R, 260 78R, 428474, C08G 1810, C08G 1806, C08G 6932
Patent
active
040874818
ABSTRACT:
Novel copolyamides having the recurring unit ##STR1## are disclosed wherein, in about 30 percent to about 60 percent of the recurring units, R is --CH.sub.2).sub.x wherein x is an integer from 7 to 12 inclusive, and, in about 40 percent to about 70 percent of the recurring units, R is m-phenylene; Ar in about 70 percent to about 95 percent of the recurring units is 4,4'-methylenebis(phenylene) and in the remaining 5 to 30 percent is a tolylene radical; and provided that when at least about 50 percent of R is m-phenylene Ar is at least 10 percent tolylene and further provided that said tolylene radicals are present in said copolyamide substantially as polyamide blocks with at least said m-phenylene radicals.
The copolyamides are highly amorphous and characterized by high glass transition temperatures. They are easily injection molded with no brittle fracture occurring and yield polymer articles, having high impact and tensile strengths along with excellent elongation and clarity.
REFERENCES:
patent: 4018746 (1977-04-01), Brinkmann et al.
Anderson Harold D.
Firth Denis A.
Rose James S.
The Upjohn Company
LandOfFree
Amorphous copolyamide from aliphatic/aromatic dicarboxylic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amorphous copolyamide from aliphatic/aromatic dicarboxylic acid , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amorphous copolyamide from aliphatic/aromatic dicarboxylic acid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2158414