Melt Processable Copolyetheramide Elastomers
AssigneeLubrizol Advanced Materials, Inc.
InventorsUmit G. Makal, Bryce W. Steinmetz, Roger W. Day, Feina Cao
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Abstract
The present invention relates to a melt processable copolyetheramide made by reacting (a) one or more segments of polyamide hard blocks derived from a lactam-terminated diisocyanate and a lactam monomer, and (b) one or more segments of polyether soft blocks derived from a polyether diol. The invention further provides for methods of making said copolyetheramide, including a continuous extruder method of production.
Claims20
A melt processable copolyetheramide elastomer comprising:
- (a) one or more segments of polyamide hard blocks derived from a lactam-terminated diisocyanate and a lactam monomer;
- and
- (b) one or more segments of soft blocks derived from at least one hydroxy-terminated compound and/or derivatives thereof;
- wherein the lactam-terminated diisocyanate used in the preparation of the elastomer contains less than 5 percent by weight residual lactam monomer
A process of preparing a melt processable copolyetheramide elastomer comprising the steps of:
- I. polymerizing (A) a lactam-terminated diisocyanate, (B) a lactam monomer, and (C) a hydroxy-terminated compound and/or derivatives thereof, optionally in the presence of a catalyst;
- wherein the polymerization takes place in an internal mixing apparatus;
- wherein the lactam-terminated diisocyanate used in the preparation of the elastomer contains less than 5 percent by weight residual lactam monomer.
A shaped polymeric article comprising a melt processable copolyetheramide elastomer comprising:
- (a) one or more segments of polyamide hard blocks derived from a lactam-terminated diisocyanate and a lactam monomer;
- and
- (b) one or more segments of soft blocks derived from at least one hydroxy-terminated compound and/or derivatives thereof;
- wherein the lactam-terminated diisocyanate used in the preparation of the elastomer contains less than 5 percent by weight residual lactam monomer.
Dependencies are inferred from the claim text.