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US 2024/0174777 A1Published application
Polypropylenes for additive manufacturing
AssigneeFina Technology, Inc.
InventorsMichael MCLEOD, Fengkui LI, Adrienne MUSIC, Ngoc NGUYEN
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Abstract
Disclosed are methods of additive manufacturing comprising polypropylene, and compositions created using the same.
Claims23
An additive manufactured article comprising one or more polypropylene (PP) with one or more of the following properties:
- a) a melting temperature≤135° C., measured according to ASTM D3418-15;
- b) an onset of melting temperature≤125° C., measured according to ASTM D3418-15;
- c) an onset of crystallization temperature≤105° C., measured according to ASTM D3418-15;
- d) crystallinity of ≤35%, measured according to ASTM D3418-15;
- e) an Avrami exponent≤2.10;
- f) an absolute value for crystallization activation energy≤550,000 J/mol, as determined from Avrami kinetics fits;
- and/or
- g) an absolute value for crystallization activation energy that is less than or equal to 80% of the absolute value for crystallization activation energy of an unnucleated Ziegler-Natta homopolymer polypropylene.
5 more elements
A composition for additive manufacturing, wherein the composition comprises at least one polypropylene (PP), and is in contact with at least one component designed for use in a 3-D printer, wherein the PP comprises one or more of the following properties:
- a) a melting temperature≤135° C., measured according to ASTM D3418-15;
- b) an onset of melting temperature≤125° C., measured according to ASTM D3418-15;
- c) an onset of crystallization temperature≤105° C., measured according to ASTM D3418-15;
- d) crystallinity of ≤35%, measured according to ASTM D3418-15;
- e) an Avrami exponent≤2.10;
- f) an absolute value for crystallization activation energy≤550,000 J/mol, as determined from Avrami kinetics fits;
- and/or
- g) an absolute value for crystallization activation energy that is less than or equal to 80% of the absolute value for crystallization activation energy of an unnucleated Ziegler-Natta homopolymer polypropylene.
5 more elements
Dependencies are inferred from the claim text.