Editing Nylon (section)

=== Nylon 6 and related homopolymers ===
{{Main|Nylon 6}}

These polymers are made from a lactam or amino acid. The synthetic route using lactams (cyclic amides) was developed by [[Paul Schlack]] at [[IG Farben]], leading to nylon&nbsp;6, or [[caprolactam|polycaprolactam]]—formed by a [[ring-opening polymerization|ring-opening polymerisation]]. The peptide bond within the caprolactam is broken with the exposed [[functional group|active groups]] on each side being incorporated into two new bonds as the monomer becomes part of the polymer backbone.

The {{cvt|220|C}} melting point of nylon 6 is lower than the {{cvt|265|C}} melting point of [[nylon 66]].<ref>{{cite web|title=Fiber-reinforced composite articles and methods of making them CA 2853925 A1|url=https://patents.google.com/patent/CA2853925A1|website=Patents|access-date=19 June 2017}}</ref> Homopolymer nylons are derived from one monomer.

{| class="wikitable"
|-
! Monomer !! Polymer
|-
| [[Caprolactam]] || [[Nylon 6|6]]
|-
| [[11-aminoundecanoic acid]] || [[Nylon 11|11]]
|-
| ω-aminolauric acid || [[Nylon 12|12]]
|}

Examples of these polymers that are or were commercially available:
* PA6 Lanxess Durethan B<ref>{{cite web|title=Durethan® is the trade name for our range of engineering thermoplastics based on polyamide 6 and polyamide 66.|url=https://techcenter.lanxess.com/scp/americas/en/products/description/47/index.jsp?pid=47|website=LANXESS Energizing Chemistry|access-date=19 June 2017}}</ref>
* PA11 Arkema Rilsan<ref name="Arkema">{{cite web|title=Polyamide Resins for an Extreme World Flagship Rilsan® PA11 and Complementary Resins & Alloys|url=http://www.rilsan.com/en/rilsan-pa11/pa11-product-information/index.html|website=Arkema|access-date=19 June 2017}}</ref>
* PA12 Evonik Vestamid L<ref>{{cite web|title=VESTAMID® L—polyamide 12|url=http://www.vestamid.com/product/vestamid/en/products-services/vestamid-l/pages/default.aspx|website=EVONIK|access-date=19 June 2017}}</ref>