Back to results
US 12,570,800 B2Granted
Polyamides having cyclic terpenoid substructures
AssigneeEvonik Operations GmbH
InventorsFrank Weinelt, Franz-Erich Baumann, Janina Koßmann
Life of this patent
Estimating the term…
Abstract
Polyamides are claimed that comprise at least 10% by weight of at least one cyclic terpenoid substructure. The substructure is preferably derived from a monoterpene. A method for preparing the polyamides and for producing the moulding compounds is also described. The moulding compounds comprise 10% to 90% by weight of these polyamides.
Claims19
A polyamide, comprising:
- at least 10% by weight of at least one cyclic terpenoid substructure,
- wherein the substructure is derived from a monoterpene produced by ring-opening polymerization of at least one bicyclic terpene lactam in the presence of a mediator selected from a group consisting of nylon salt or an α,ω-amino acid which is 12-ADA,
- wherein said polyamide contains from 1 to 100 ppm of a phosphorus-containing component,
- wherein the amount of mediator employed is in a range of 5 to 17% by weight based on the amount of monomers used,
- wherein the nylon salt comprises a diammonium compound that has a ring structure and a dicarboxylate compound, and
- wherein the phosphorus-containing component comprises hypophosphorous acid.
3 more elements
Dependencies are inferred from the claim text.