Patent ID: 11905407
Assignee: NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B  Y | IPC B  C

Claim 0:
1. A process comprising:
in-mold annealing in a 1-step a polymer blend and forming an article, said polymer blend comprising,
a) 100 parts by weight of a neat polylactide resin having a weight average molecular weight of from about 110,000 to about 175,000, said neat polylactide resin having a d (dextrorotatory) content of from about 0.2% to about 1.0%, and
b) from about 10 to about 100 parts by weight of a masterbatch, said masterbatch comprising from about 15 wt. % to about 50 wt. % of a polylactide resin having a weight average molecular weight of from about 110,000 to about 175,000, from about 30 wt. % to about 70 wt. % of a crystallization aid compound comprising a salt of a sulphonate, or a salt of a phosphonate or a salt of a silicate, from about 5 wt. % to about 30 wt. % of a compostable random copolyester, and wherein said cycle time to produce said article is from about 20 to about 50 seconds for a 5 gram molded article.