公开(公告)号：US20240158613A1

公开(公告)日：2024-05-16

申请号：US18278642

申请日：2022-02-18

Applicant: BASF SE

Inventor： Thomas Georg GFROERER ,  Heinz HERBST ,  Oliver REICH ,  Gazi TUERKOGLU

IPC: C08K7/00 ,  B29B9/06 ,  B29B9/12 ,  B29K105/00 ,  B29K509/00 ,  C08K3/22 ,  C08K5/098 ,  C08K5/134 ,  C08K5/526

CPC classification number: C08K7/00 ,  B29B9/12 ,  C08K3/22 ,  C08K5/098 ,  C08K5/134 ,  C08K5/526 ,  B29B9/06 ,  B29K2105/0044 ,  B29K2509/00 ,  C08K2003/2206

Abstract: The invention relates to a method for manufacturing a pellet in a pellet mill, which method comprises the steps of (A) pressing a mixture for compaction by a roller through a nozzle to obtain a strand, and (B) comminuting the strand to obtain the pellet, wherein the mixture for compaction comprises (i) 87 to 97 wt. % of a polymer stabilizer mixture polymer stabilizer mixture, which comprises the polymer stabilizers (i-1) 21 to 29 wt. % of tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), (i-2) 21 to 29 wt. % of tetrakis-[3-(3,5-ditert-butyl-4-hydroxy-phenyl)-propionyloxymethyl]methane (CAS-No. 6683-19-8), (i-3) 8 to 12 wt. % of a C16-C18 fatty acid calcium salt, (i-4) 36 to 44 wt. % of a calcium oxide, and wt. % of the polymer stabilizers (i-1), (i-2), (i-3) and (i-4) are based on the weight of the polymer stabilizer mixture, and (ii) 3 to 13 wt. % of a processing aid, which is a propylene-ethylene copolymer and which possesses a melting enthalpy below 100 J/g at 101.32 kPa. The pellet is useful for a dust-free handling of its polymer stabilizer mixture at a manufacturing of a stabilized polymer. Furthermore, a method for stabilizing a polymer, which is a polyolefin, a polystyrene or a mixture thereof, is disclosed, which comprises the dosing of the pellet to the polymer.

公开(公告)号：US20240165851A1

公开(公告)日：2024-05-23

申请号：US18280787

申请日：2022-02-17

Applicant: BASF SE

Inventor： Thomas Georg GFROERER

IPC: B29B9/06 ,  C08J3/12 ,  C08K5/11 ,  C08K5/524

CPC classification number: B29B9/06 ,  C08J3/12 ,  C08K5/11 ,  C08K5/524 ,  C08J2423/06

Abstract: The invention relates to a method for manufacturing a pellet in a pellet mill, which method comprises the steps of (A) pressing a mixture for compaction by a roller through a nozzle to obtain a strand, and (B) comminuting the strand to obtain the pellet, wherein the mixture for compaction comprises (i) 87 to 97 wt. % of a polymer stabilizer mixture polymer stabilizer mixture, which comprises the polymer stabilizers (i-1) 62 to 72 wt. % of tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), (i-2) 28 to 38 wt. % of tetrakis-[3-(3,5-ditert-butyl-4-hydroxy-phenyl)-propionyloxymethyl]me-thane (CAS-No. 6683-19-8), and wt. % of the polymer stabilizers (i-1) and (i-2) are based on the weight of the polymer stabilizer mixture, and (ii) 3 to 13 wt. % of a processing aid, which is a polyethylene and which possesses a weight average molecular weight above 2500 Da and below 16000 Da. The pellet is useful for a dust-free handling of its polymer stabilizer mixture at a manufacturing of a stabilized polymer. Furthermore, a method for stabilizing a polymer, which is a polyolefin, a polystyrene or a mixture thereof, is disclosed, which comprises the dosing of the pellet to the polymer.

公开(公告)号：US20240301148A1

公开(公告)日：2024-09-12

申请号：US18280827

申请日：2022-02-17

Applicant: BASF SE

Inventor： Thomas Georg GFROERER

IPC: C08J3/22 ,  B29B9/06 ,  B29B9/12 ,  B29K23/00 ,  B29K91/00 ,  B29K105/00 ,  C08K5/13 ,  C08K5/524 ,  C08L23/00 ,  C08L25/06

CPC classification number: C08J3/226 ,  B29B9/06 ,  B29B9/12 ,  C08K5/13 ,  C08K5/524 ,  C08L23/00 ,  C08L25/06 ,  B29K2023/14 ,  B29K2091/00 ,  B29K2105/0085 ,  B29K2105/0094 ,  B29K2995/0012 ,  B29K2995/0088 ,  C08J2323/16 ,  C08K2201/014 ,  C08L2201/08 ,  C08L2205/025 ,  C08L2205/06 ,  C08L2310/00

Abstract: The invention relates to a method for manufacturing a pellet in a pellet mill, which method comprises the steps of (A) pressing a mixture for compaction by a roller through a nozzle to obtain a strand, and (B) comminuting the strand to obtain the pellet, wherein the mixture for compaction comprises (i) 87 to 97 wt. % of a polymer stabilizer mixture polymer stabilizer mixture, which comprises the polymer stabilizers (i-1) 45 to 55 wt. % of tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), (i-2) 45 to 55 wt. % of tetrakis-[3-(3,5-ditert-butyl-4-hydroxy-phenyl)-propionyloxymethyl]methane (CAS-No. 6683-19-8), and wt. % of the polymer stabilizers (i-1) and (i-2) are based on the weight of the polymer stabilizer mixture, and (ii) 3 to 13 wt. % of a processing aid, which is a propylene-ethylene copolymer and which possesses a melting enthalpy below 20 J/g at 101.32 kPa. The pellet is useful for a dust-free handling of its polymer stabilizer mixture at a manufacturing of a stabilized polymer. Furthermore, a method for stabilizing a polymer, which is a polyolefin, a polystyrene or a mixture thereof, is disclosed, which comprises the dosing of the pellet to the polymer.

公开(公告)号：US20240149496A1

公开(公告)日：2024-05-09

申请号：US18278641

申请日：2022-02-18

Applicant: BASF SE

Inventor： Thomas Georg GFROERER ,  Oliver REICH ,  Heinz HERBST ,  Gazi TUERKOGLU

IPC: B29B9/06 ,  B29B9/12 ,  C08J3/12 ,  C08K5/098 ,  C08K5/134 ,  C08K5/526 ,  C08L23/16

CPC classification number: B29B9/06 ,  B29B9/12 ,  C08J3/12 ,  C08K5/098 ,  C08K5/134 ,  C08K5/526 ,  C08L23/16 ,  B29K2023/16

Abstract: The invention relates to a method for manufacturing a pellet in a pellet mill, which method comprises the steps of (A) pressing a mixture for compaction by a roller through a nozzle to obtain a strand, and (B) comminuting the strand to obtain the pellet, wherein the mixture for compaction comprises (i) 87 to 97 wt. % of a polymer stabilizer mixture polymer stabilizer mixture, which comprises the polymer stabilizers (i-1) 35 to 45 wt. % of tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), (i-2) 15 to 25 wt. % of tetrakis-[3-(3,5-ditert-butyl-4-hydroxy-phenyl)-propionyloxymethyl]methane (CAS-No. 6683-19-8), (i-3) 35 to 45 wt. % of a C16-C18 fatty acid calcium salt, and wt. % of the polymer stabilizers (i-1), (i-2) and (i-3) are based on the weight of the polymer N stabilizer mixture, and (ii) 3 to 13 wt. % of a processing aid, which is a propylene-ethylene copolymer and which possesses a melting enthalpy below 100 J/g at 101.32 kPa. The pellet is useful for a dust-free handling of its polymer stabilizer mixture at a manufacturing of a stabilized polymer. Furthermore, a method for stabilizing a polymer, which is a polyolefin, a polystyrene or a mixture thereof, is disclosed, which comprises the dosing of the pellet to the polymer.