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

IPC: C08K5/526 ,  B29B9/06 ,  B29B9/12 ,  C08J3/12 ,  C08L23/16 ,  B29K23/00 ,  B29K25/00

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

IPC: C08K5/526 ,  B29B9/06 ,  B29B9/12 ,  C08J3/12 ,  C08L23/16 ,  B29K23/00 ,  B29K25/00

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：US20220249383A1

公开(公告)日：2022-08-11

申请号：US17623675

申请日：2020-07-06

Applicant: BASF SE

Inventor： Yean Yik Geoerg ,  Thomas Georg Gfroerer ,  Holger Ruckdaeschel ,  Shyam Sundar Sathyanarayana ,  Lothar Seidemann ,  Heinz Herbst

IPC: A61K9/20

Abstract: The present disclosure relates to a method for manufacturing a tablet including (A) filling a starting material, which is in a solid form, in a first open cavity, which is formed by a first punch and a die, to obtain a second open cavity, which is filled at least partly with the starting material, (B) closing the second open cavity by a second punch to obtain a first dosed cavity, (C) compressing the starting material at a compression temperature below 37° C. by moving at least one out of the first punch and the second punch to obtain a second closed cavity, which has a smaller volume than the first closed cavity, which results in formation of a trapped tablet of the starting material in the second closed cavity, (D) removing the trapped tablet to obtain the tablet, which has a tablet temperature below 37° C. directly after removal.