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公开(公告)号：US11958215B2
公开(公告)日：2024-04-16
申请号：US17642055
申请日：2020-09-07
Applicant: BASF SE
Inventor： Thomas Georg Gfroerer , Shyam Sundar Sathyanarayana , Yean Yik Geoerg , Florian Puch , Jennifer M. O'Sullivan , Heinz Herbst
CPC classification number: B29B9/12 , B29B9/06 , C08J3/12 , C08K5/526 , C08L23/16 , B29K2023/16 , B29K2025/06 , C08J2323/16 , C08J2325/06
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, which is tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), 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 at a manufacturing of the 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：US11919202B2
公开(公告)日：2024-03-05
申请号：US17642055
申请日：2020-09-07
Applicant: BASF SE
Inventor： Thomas Georg Gfroerer , Shyam Sundar Sathyanarayana , Yean Yik Geoerg , Florian Puch , Jennifer M. O'Sullivan , Heinz Herbst
CPC classification number: B29B9/12 , B29B9/06 , C08J3/12 , C08K5/526 , C08L23/16 , B29K2023/16 , B29K2025/06 , C08J2323/16 , C08J2325/06
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, which is tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), 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 at a manufacturing of the 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：US20230302686A1
公开(公告)日：2023-09-28
申请号：US17642055
申请日：2020-09-07
Applicant: BASF SE
Inventor： Thomas Georg Gfroerer, III , Shyam Sundar Sathyanarayana , Yean Yik Geoerg , Florian Puch , Jennifer M. O'Sullivan , Heinz Herbst
CPC classification number: B29B9/12 , C08K5/526 , C08L23/16 , C08J3/12 , B29B9/06 , C08J2323/16 , C08J2325/06 , 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, which is tris(2,4-ditert-butylphenyl) phosphite (CAS-No. 31570-04-4), 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 at a manufacturing of the 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.
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