# US 2018/0022894 A1 · Polyethylene compositions with improved optical properties > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022894 A1 - Document ID: US20180022894A1 - Status: Published application - Kind: A1 - Application number: 15/539,225 - Filed: 2015-09-17 - Published: 2018-01-25 - Earliest claimed: 2014-12-23 - Assignees: Dow Global Technologies LLC - Applicants: Dow Global Technologies LLC - Inventors: Martin K. Hill; Selim Bensason; Hans-Werner Schmidt; Paul Smith; Seda Aksel - Web page: https://patentgrep.com/patent/US20180022894A1 ## CPC - C08K 5/20: Carboxylic acid amides - C07C 233/57: having carbon atoms of carboxamide groups bound to carbon atoms of rings other than six-membered aromatic rings - C07C 233/65: having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals - C08J 5/18: Manufacture of films or sheets - C08L 23/06: Polyethylene - C07C 2601/14: The ring being saturated - C07C 2601/16: the ring being unsaturated - C08J 2323/06: Polyethene - C08L 2201/10: Transparent films; Clear coatings; Transparent materials - C08L 2203/16: used for films - C08L 2205/24: Crystallisation aids - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Embodiments of a polyethylene composition comprise at least 50% by wt. of at least one polyethylene polymer; and 0.001 to 2% by wt. of bisamide nucleating agent utilized to reduce haze within the polyethylene composition. ## Claims ### Claim 1 A polyethylene composition comprising: at least 50% by wt. of at least one polyethylene polymer chosen from a linear low density polyethylene polymer (LLDPE), a low density polyethylene polymer (LDPE), a high density polyethylene polymer (HDPE), or combinations thereof; and 0.001 to 2% by wt nucleating agent comprising a structure of formulas (I), (II), or (III): wherein R1 and R2 comprise the same or different moieties chosen from: C1-C20 alkyl unsubstituted or substituted by one or more hydroxy; C4-C20 alkenyl unsubstituted or substituted by one or more hydroxy; C2-C20 alkyl interrupted by oxygen or sulfur; C3-C12 cycloalkyl unsubstituted or substituted by one or more C1-C20 alkyl; (C3-C12 cycloalkyl)-C1-C10 alkyl unsubstituted or substituted by one or more C1-C20 alkyl; bis[C3-C12 cycloalkyl]-C1-C10 alkyl unsubstituted or substituted by one or more C1-C20 alkyl; a bicyclic or tricyclic hydrocarbon radical with 5 to 20 carbon atoms unsubstituted or substituted by one or more C1-C20 alkyl; phenyl unsubstituted or substituted by one or more radicals selected from C1-C20 alkyl, C1-C20 alkoxy, C1-C20 alkylamino, di(C1-C20 alkyl)amino, hydroxy and nitro; phenyl-C1-C20 alkyl unsubstituted or substituted by one or more radicals selected from C1-C20 alkyl, C3-C12 cycloalkyl, phenyl, C1-C20 alkoxy and hydroxy; phenylethenyl unsubstituted or substituted by one or more C1-C20 alkyl; biphenyl-(C1-C10 alkyl) unsubstituted or substituted by one or more C1-C20 alkyl; naphthyl unsubstituted or substituted by one or more C1-C20 alkyl; naphthyl-C1-C20 alkyl unsubstituted or substituted by one or more C1-C20 alkyl; naphthoxymethyl unsubstituted or substituted by one or more C1-C2 alkyl; biphenylenyl, flourenyl, anthryl; a 5-to-6-membered heterocylic radical unsubstituted or substituted by one or more C1-C20 alkyl; a C1-C20 hydrocarbon radical containing one or more halogen; or tri(C1-C10 alkyl)silyl(C1-C10 alkyl); wherein, when the polyethylene composition is used to form an article, the article has a haze value reduction of at least 15% when compared to an article having the same polyethylene polymer but free of the nucleating agent. ### Claim 2 (depends on 1) The polyethylene composition of claim 1 wherein the polyethylene polymer is copolymer of ethylene with alpha-olefin copolymers, an ethylene homopolymer or combinations thereof. ### Claim 3 (canceled) ### Claim 4 (depends on 1) The polyethylene composition according to claim 1 wherein the polyethylene composition has a melt index (I2)≦50 g/10 min, wherein I2 is measured according to ASTM D1238 at 190° C. and 2.16 kg load, and a density about 0.855 to about 0.970 g/cm3. ### Claim 5 (depends on 1) The polyethylene composition according to claim 1 wherein the polyolefin resin comprises 0.01-0.5% by wt of the nucleating agent. ### Claim 6 (depends on 1) The polyethylene composition according to claim 1 wherein R1, R2, or both are wherein R3 is a direct bond, or a C1-C6 alkyl. ### Claim 7 (depends on 1) The polyethylene composition according to claim 1 wherein R1, R2 or both are wherein R3 is a direct bond, or a C1-C6 alkyl. ### Claim 8 (depends on 1) The polyethylene composition according to claim 1 wherein R1, R2, or both are wherein R3 is a direct bond, or a C1-C6 alkyl. ### Claim 9 (depends on 1) The polyethylene composition according to claim 1 wherein R1, R2, or both are wherein R3 is a direct bond, or a C1-C6 alkyl. ### Claim 10 (depends on 1) The polyethylene composition according to claim 1 wherein R1, R2, or both are a C1-C6 alkyl. ### Claim 11 (depends on 1) The polyethylene composition according to claim 1 wherein the polyethylene composition comprises greater than about 60% by wt., or preferably greater than about 80% by wt. polyethylene polymer. ### Claim 12 An article produced from the polyethylene composition of any of the preceding claims, wherein the article has a haze value reduction of at least 20% when compared to an article having the same polyethylene polymer but free of the nucleating agent. ### Claim 13 (depends on 12) The article of claim 12 wherein the article is chosen from a blown film, a cast film, a molded article, a melt-spun fiber, or an extruded article, wherein the extruded article is chosen form sheets, pipes, or tubes. ### Claim 14 (canceled) ### Claim 15 (depends on 1) The polyethylene according to claim 1 wherein said polyethylene composition has a density of about 0.910 to about 0.940 g/cm3. ### Claim 16 (depends on 1) The polyethylene according to claim 1 wherein the polyethylene composition is substantially free of polypropylene. ### Claim 17 (depends on 1) The polyethylene according to claim 1 wherein polyethylene composition comprises 0.5% by weight to 15% by weight polypropylene.