公开(公告)号：US20210040255A1

公开(公告)日：2021-02-11

申请号：US16979740

申请日：2019-03-14

Applicant: BASF SE

Inventor： Frank PRISSOK ,  Elmar POESELT ,  Martina SCHOEMER ,  Florian PUCH ,  Dirk KEMPFERT

IPC: C08F293/00

Abstract: A process for producing a block copolymer may involve reacting at least one aromatic polyester having a melting point in the range from 160 to 350° C. with at least one second compound selected from diamines and diols at temperatures greater than 160° C. to obtain a mixture; and heating the mixture at a temperature in the range from 100° C. to 300° C. for from 1 to 240 hours to obtain a block copolymer, wherein in the reacting, the second compound is employed in an amount of 0.02 to 0.3 mol per mol of ester bond in the polyester. Block copolymers may be obtained by such a process and used for producing extruded, injection molded and pressed articles and also foams, foam particles, shoe soles, cable sheaths, hoses, profiles, drive belts, fibers, nonwovens, films, moldings, plugs, housings, damping elements for the electronic/automotive industry, mechanical engineering, 3-D printing, medicine, or consumer goods.

公开(公告)号：US20190269075A1

公开(公告)日：2019-09-05

申请号：US16332986

申请日：2017-09-05

Applicant: BASF SE

Inventor： Rolf MINKWITZ ,  Frank REIL ,  Martina SCHOEMER ,  Johannes Klaus SPRAFKE

IPC: A01G9/14 ,  C08G69/14 ,  C08G69/34 ,  C08G69/36 ,  A01G13/02 ,  B32B27/34 ,  C08L77/08 ,  B32B27/08

Abstract: The present invention relates to an agricultural film (AF) comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam and a monomer mixture (M). The present invention further relates to a process for producing the agricultural film (AF) and to the use of the agricultural film (AF) as mulch film, as silage film, as greenhouse film or as silo film.

公开(公告)号：US20190055341A1

公开(公告)日：2019-02-21

申请号：US16078041

申请日：2017-02-22

Applicant: BASF SE

Inventor： Frank PRISSOK ,  Elmar POESELT ,  Dirk KEMPFERT ,  Florian PUCH ,  Martina SCHOEMER

IPC: C08G18/40 ,  C08G18/42 ,  C08G18/48 ,  C08G18/76 ,  C08G18/73 ,  C08G18/08

Abstract: The present invention relates to a process for producing a diblock copolymer comprising the reaction of at least one aromatic polyester having a melting point in the range from 160° C. to 350° C. and at least one polymer diol having a melting point of less than 100° C. at a temperature of greater than 200° C. to obtain a mixture (G-a); and the reaction of the mixture (G-a) with at least one diisocyanate, wherein the diisocyanate is employed in a molar amount of at least 0.9 based on the alcohol groups of the polymer diols. The present invention further relates to diblock copolymers obtained or obtainable according to such a process and to the use of such diblock copolymers for producing extruded, injection molded and pressed articles and also foams, cable sheaths, hoses, profiles, drive belts, fibers, nonwovens, films, moldings, plugs, housings, damping elements for the electricals industry, automotive industry, mechanical engineering, 3-D printing, medicine and consumer goods.