Chemistry Reference
In-Depth Information
Quiana
(Du Pont)
H
HN
H
2
C
H
NH OC (CH
2
)
10
CO
trans
trans
Me
Me
HN CH
2
CH
CH
2
C
CH
2
CH
2
NH
Me
OC
CO
Me
Me
HN CH
2
CH
2
CH
CH
2
C
CH
2
NH
Me
Trogamide (Dyn. Nobel)
Nomex (Du Pont)
HN
NH
CO
CO
(Du Pont)
(AKZO)
Kevlar
Twaron
HN
NH
CO
CO
CO
CO
T
N
O
CO
H
2
N
CO
Formula 6.1
consists of solid state polymerization of the prepolymer at 290 C[
11
]. The rel-
atively high heat deflection temperature and strength are of interest for electronic
articles, tire cords, and for airbags.
None of the afore-mentioned polyamides could rival with Nylon-6,6 in terms of
commercial success. The only successful competitor appeared quite early on the
scene, namely Nylon-6, which was developed by Paul Schlack in 1938 [
12
-
16
].
Schlack was born on December 1897 in Stuttgart, where he grew up and attended
the high school. He served in the German army during World War I and survived
without being seriously wounded. He studied chemistry at the Technical Univer-
sity of Stuttgart and gained the Ph.D. in 1924. Afterwards he was hired by Agfa
which at that time was member of the I. G. Farben. From 1926 to 1946 he was
leader of the fiber research center in Berlin-Lichtenberg working on modification
of cellulose acetate fibers and on synthetic fibers based on vinyl polymers, poly-
esters, or polyamides. In 1935, he was sent to DuPont to learn more about the
''superpolyesters'' developed by Carothers' group (see
Chap. 3
). At that time he
