# US 10,479,849 B2 · Low emission propylene-based polymer resins > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,849 B2 - Document ID: US10479849B2 - Status: Granted - Kind: B2 - Application number: 15/341,461 - Filed: 2016-11-02 - Published: 2017-05-04 - Granted: 2019-11-19 - Earliest claimed: 2015-11-02 - Assignees: Braskem America, Inc. - Applicants: Braskem America, Inc. - Inventors: Jeffrey Salek; Mark Chappell; Bryan Dawson - Web page: https://patentgrep.com/patent/US10479849B2 ## CPC - C08F 110/06: Propene - C08L 23/12: Polypropene - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A propylene-based polymer resin is characterized by a low volatile emission signature. For example, the propylene-based polymer resin may have a volatile organic compound content no greater than 125 ppm, a semi-volatile organic compound content no greater than 500 ppm, and a C36 oligomeric content no greater than 250 ppm. ## Claims ### Claim 1 A propylene-based polymer resin comprising: a volatile organic compound content no greater than 125 ppm; a semi-volatile organic compound content no greater than 500 ppm; and a C36 oligomeric content no greater than 250 ppm, wherein the propylene-based polymer resin is produced utilizing a Ziegler-Natta catalyst. ### Claim 2 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin has a tan delta of less than 10.0 at an angular frequency of 0.1 rad/s (180° C.). ### Claim 3 (depends on 1) The propylene-based polymer resin of claim 1, wherein the volatile organic compound content is no greater than 115 ppm. ### Claim 4 (depends on 1) The propylene-based polymer resin of claim 1, wherein the semi-volatile organic compound content is no greater than 175 ppm. ### Claim 5 (depends on 1) The propylene-based polymer resin of claim 1, wherein the C36 oligomeric content is no greater than 220 ppm. ### Claim 6 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin comprises a melt flow rate greater than 115 g/10 min. ### Claim 7 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin comprises a crystallinity greater than 65%. ### Claim 8 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin comprises a mesopentad content greater than 97%. ### Claim 9 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin comprises a homopolymer polypropylene. ### Claim 10 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin comprises a propylene-ethylene copolymer. ### Claim 11 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin comprises a propylene-alpha olefin copolymer. ### Claim 12 (depends on 11) The propylene-based polymer resin of claim 11, wherein the alpha olefin comprises at least one monomer selected from the group consisting of 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, and combinations of any thereof. ### Claim 13 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin is an in-reactor resin. ### Claim 14 (depends on 1) An impact copolymer polypropylene composition comprising: a rubber phase comprising a propylene-ethylene copolymer; and a matrix phase comprising the propylene-based polymer resin of claim 1. ### Claim 15 (depends on 1) A molded article comprising the propylene-based polymer resin of claim 1. ### Claim 16 A propylene-based polymer resin comprising: a volatile organic compound content no greater than 125 ppm; a semi-volatile organic compound content no greater than 500 ppm; a C36 oligomeric content no greater than 250 ppm; a melt flow rate greater than 30 g/10 min.; a Mw/Mn of greater than 5; a crystallinity greater than 50%; and a mesopentad content greater than 92%, wherein the propylene-based polymer resin is produced utilizing a Zeigler-Natta catalyst. ### Claim 17 (depends on 16) The propylene-based polymer resin of claim 16, wherein the resin is an in-reactor resin. ### Claim 18 (depends on 16) An impact copolymer propylene composition comprising: a rubber phase comprising a propylene-ethylene copolymer; and a matrix phase comprising the propylene-based polymer resin of claim 16. ### Claim 19 (depends on 16) A molded article comprising the propylene-based polymer resin of claim 16. ### Claim 20 A homopolymer polypropylene resin comprising: a volatile organic compound content no greater than 125 ppm; a semi-volatile organic compound content no greater than 500 ppm; a C36 oligomeric content no greater than 250 ppm; a melt flow rate greater than 30 g/10 min.; a crystallinity greater than 50%; and a mesopentad content greater than 92%, wherein the propylene-based polymer resin is produced utilizing a Zeigler-Natta catalyst. ### Claim 21 (depends on 20) The homopolymer polypropylene resin of claim 20, wherein the resin is an in-reactor resin. ### Claim 22 (depends on 20) An impact copolymer polypropylene composition comprising: a rubber phase comprising a propylene-ethylene copolymer; and a matrix phase comprising the homopolymer polypropylene resin of claim 20. ### Claim 23 (depends on 20) A molded article comprising the homopolymer polypropylene resin of claim 20. ### Claim 24 (depends on 1) The propylene-based polymer resin of claim 1, wherein the resin has a Mw/Mn of greater than 5. ### Claim 25 (depends on 1) The propylene-based polymer resin of claim 1, wherein the Zeigler-Natta catalyst is a non-metallocene Ziegler-Natta catalyst.