US 11,753,534 B2
Compatibilization of post consumer resins
Nicholas M. Briggs, Cincinnati, OH (US); Ryan Kramb, Monroe, OH (US); Bryan S. Schley, Cincinnati, OH (US); Timothy J. Skillman, Maineville, OH (US); Jeffrey J. Strebel, Cincinnati, OH (US); Jeanine A. Smith, Maineville, OH (US); David C. Holliman, Maineville, OH (US); Rocio S. Garay, Cincinnati, OH (US); and Gilles Jobin, Quebec (CA)
Assigned to Equistar Chemicals, LP, Houston, TX (US)
Filed by EQUISTAR CHEMICALS, LP, Houston, TX (US)
Filed on Nov. 16, 2021, as Appl. No. 17/527,949.
Claims priority of provisional application 63/226,895, filed on Jul. 29, 2021.
Claims priority of provisional application 63/114,342, filed on Nov. 16, 2020.
Prior Publication US 2022/0177681 A1, Jun. 9, 2022
Int. Cl. C08L 23/12 (2006.01); C08L 23/06 (2006.01); B29C 43/00 (2006.01); B29K 23/00 (2006.01)
CPC C08L 23/12 (2013.01) [C08L 23/06 (2013.01); B29C 43/003 (2013.01); B29K 2023/12 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01); C08L 2205/08 (2013.01); C08L 2205/12 (2013.01); C08L 2207/062 (2013.01); C08L 2207/20 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A composition comprising:
(i) a virgin resin having a first polyolefin;
(ii) a post-consumer recycled resin having a second polyolefin;
(iii) a polypropylene-based compatibilizer, wherein the polypropylene-based compatibilizer comprises:
(A) 70% of a semi-crystalline matrix comprising (AI) from 25% to 75% by weight, based upon the total weight of (A), of a propylene polymer having a melt flow rate MFRI of 1.2 g/10 min; and (AII) from 25% to 75% by weight, based upon the total weight of (A), of a propylene polymer having a melt flow rate value MFRII of 73 g/10 min; wherein the ratio MFRII/MFRI is 60 and the propylene polymers (AI) and (AII) are independently selected from the group consisting of a propylene homopolymer, a random copolymer of propylene containing up to 3% of ethylene, and a random copolymer of propylene containing up to 6% of at least one C4-C10 alpha-olefin and optionally up to 3% of ethylene; the amounts of (AI) and (AII) being referred to the total weight of (AI) and (AII) wherein (A) has a polydispersity index from 4 to 7; and,
(B) 30% of a rubber comprising a copolymer of ethylene and at least one C3-C10 α-olefin, wherein the rubber component has 36% of ethylene,
wherein the amounts of (A) and (B) referred to the total weight of (A) and (B) and the composition has a value of viscosity [η] of the fraction soluble in xylene at room temperature of 7 to 9 dl/g.