C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5705
C08L 67/02 (2006.01) C08L 77/00 (2006.01)
Patent
CA 1069641
ABSTRACT OF THE DISCLOSURE The flow characteristics and rheological properties of thermoplastic polyesters and copolyesters are significantly improved by the addition of 0.01 - 20% by weight of a particularly defined polyamide resin thereto, namely one having a number molecular weight of from 5,000 to 50,000, obtained from the reaction of a high molecular weight aliphatic or cycloaliphatic dibasic acid containing from 18 to 52 carbon atoms and up to 30 weight percent, based on the total acid charge, of a short-chain, saturated, aliphatic dibasic acid containing from 2 to 13 carbon atoms with an aliphatic saturated diamine con- taining from 2 to 10 carbon atoms or a mixture of the diamines. In addition to improving the processability of the thermoplastic materials the polymeric additives also impart other desirable properties to the resulting manufactured products.
286141
Mains Harold E.
O'brien William L.
Williams Frederick R.
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