Carbonyl-14-phenylene PEEK

Poly(oxy-l,4-phenyleneisopropylidene-l,4-phenyleneoxysebacoyl) Poly(oxy-l,4-phenyleneoxy-l,4-phenyleneoxy-carbonyl-l,4-phenylene) [PEEK] Poly(oxypropyleneoxyterephthaloyl)... 

Stiff polymers, such as polyphenylene, nylon 66, polyphenylene sulfone, and polyarylether ketone (PEEK), have relatively high Tg values because of the presence of phenylene and sulfone or carbonyl stiffening groups in the chain. 

Ether groups are present in polymers containing other functionalities in the backbone. Among these are the a/f-polymers poly(oxy-1,4-phenylene-carbonyl-1,4-phenylene) or poly(aryl ether ketone) or poly(ether ketone) or PEK, poly(aryl ether ether ketone) or PEEK, poly(aryl ether ketone ketone) or PEKK, poly(aryl ether ketone ether ketone ketone) or PEKEKK, etc. The structures of PEK and PEEK are shown below ... 

PEEK oxy-1,4, phenylene-oxy-1,4 phenylene-carbonyl-1,4 phenylene FIGURE 6.5 PEEK production. 

Monomers for poly(ether ether ketone)s (PEEK)s and poly(ether ketone)s (PEK)s are shown in Table 6.1. Varieties of PEEK are shown in Figure 6.2. PEEK-WC is poly(oxa-p-phenylene-3,3-phthalido-p-phenylene-oxa-p-phenylene-oxy-phenylene). In addition to PEEK, the carbonyl group is partly modified with phthalide units. It is an amorphous PEEK. 

PolyCoxy- 1,4-phenylene-oxy- 1,4-phenylene -carbonyl-1, 4-phenylene) (Poly(elher ether ketone), PEEK)... 

Polyloxy-1,4-phenylene oxy- 1.4- phenylene carbonyl 1.4- phenylene) 4,4 -Difluorobenzophenone- hydroquinone copol ner, SRU PEEK 31694-16-3 Polytoxy-1,4-phenyleneoxy- 1.4- phenylenecarbonyl- 1.4- phenylene) R (C19H12O3),... 

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