公开(公告)号：JP2001192612A

公开(公告)日：2001-07-17

申请号：JP2000287112

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD ,  GERHARD MEYER

IPC: C08L75/04 ,  C08G18/78 ,  C09D175/04 ,  C09J175/04 ,  G11B5/702

Abstract: PROBLEM TO BE SOLVED: To provide a binder-contg. composition capable of giving magnetic recording media having such sufficient hardness and wear resistance as to be preservable and operable even at high temperatures and high humidities, thus favorably usable for producing magnetic recording media. SOLUTION: This binder-contg. composition comprises at least one thermoplastic blocked copolyurethane having at least one soft segment A and at least one hard segment B and at least one kind of inorganic filler; wherein the thermoplastic blocked copolyurethane is such that the at least one hard segment B has a structural moiety shown by the formula I. This binder-contg. composition can be used for producing, in particular magnetic recording media.

公开(公告)号：JP2001151845A

公开(公告)日：2001-06-05

申请号：JP2000287074

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD

IPC: C08G18/40 ,  C08G18/00 ,  C08G18/08 ,  C08G18/42 ,  G11B5/702 ,  G11B5/84

Abstract: PROBLEM TO BE SOLVED: To provide a polymer which gives proper hardness and abrasion durability to magnetic recording media and further gives sufficient recording stability on storage or operation under high temperature, when used for the production of the magnetic recording media. SOLUTION: This thermoplastic block copolymer polyurethane having at least one soft segment A and at least one hard segment B, characterized in that at least one hard segment in the polyurethane has at least one anchor group. Further, the method for producing the polyurethane, the binder produced from the polyurethane, and the molded article are also provided. The method for using the polyurethane to produce the magnetic recording medium is also provided.

公开(公告)号：NO20004714A

公开(公告)日：2001-03-23

申请号：NO20004714

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD ,  MAIER GERHARD

IPC: C08L75/04 ,  C08G18/78 ,  C09D175/04 ,  C09J175/04 ,  G11B5/702

CPC classification number: C08G18/7893 ,  G11B5/7021 ,  G11B5/7022

公开(公告)号：DE19945401C2

公开(公告)日：2002-02-07

申请号：DE19945401

申请日：1999-09-22

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  KRESS RIA ,  HEES ULRIKE ,  KOHL ALBERT ,  MAIER GERHARD ,  BRADSHAW RICHARD

IPC: C08L75/04 ,  C08G18/78 ,  C09D175/04 ,  C09J175/04 ,  G11B5/702 ,  C08G18/79

Abstract: Binder compositions containing inorganic fillers and thermoplastic polyurethane block copolymers with soft and hard segments, in which at least one hard segment contains a bicyclic structural element formed by the criss-cross polyaddition reaction between a di-isocyanate and an azine compound. A binder composition (BC) containing (at least) (i) an inorganic filler and (ii) thermoplastic polyurethane block copolymer(s) (TPU) with soft segment(s) (A) and hard segment(s) (B), in which at least one of the hard segments contains a structural element of formula (I): R , R = optionally substituted 4-20C aromatic or heteroaromatic groups, with R = R = H, or R -R = essentially completely fluorinated 1-10C alkyl; R , R = linear or branched aliphatic residues, cycloaliphatic residues or aromatic residues (all with 4-20C, all optionally substituted); n = 1-100 . An Independent claim is also included for a method for the production of BC by mixing components (i) and (ii) together.

公开(公告)号：NO20004714L

公开(公告)日：2001-03-23

申请号：NO20004714

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD ,  MAIER GERHARD

IPC: C08L75/04 ,  C08G18/78 ,  C09D175/04 ,  C09J175/04 ,  G11B5/702

Abstract: Binder compositions containing inorganic fillers and thermoplastic polyurethane block copolymers with soft and hard segments, in which at least one hard segment contains a bicyclic structural element formed by the criss-cross polyaddition reaction between a di-isocyanate and an azine compound. A binder composition (BC) containing (at least) (i) an inorganic filler and (ii) thermoplastic polyurethane block copolymer(s) (TPU) with soft segment(s) (A) and hard segment(s) (B), in which at least one of the hard segments contains a structural element of formula (I): R , R = optionally substituted 4-20C aromatic or heteroaromatic groups, with R = R = H, or R -R = essentially completely fluorinated 1-10C alkyl; R , R = linear or branched aliphatic residues, cycloaliphatic residues or aromatic residues (all with 4-20C, all optionally substituted); n = 1-100 . An Independent claim is also included for a method for the production of BC by mixing components (i) and (ii) together.

公开(公告)号：NO20004713L

公开(公告)日：2001-03-23

申请号：NO20004713

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD ,  CHELBLE JOSEF

IPC: C08G18/40 ,  C08G18/00 ,  C08G18/08 ,  C08G18/42 ,  G11B5/702 ,  G11B5/84 ,  C08G63/685 ,  C08G18/10 ,  C09J175/06

Abstract: Thermoplastic polyurethane (TPU) block copolymers with soft segment(s) (A) and hard segment(s) (B), in which at least one hard segment B contains anionic, cationic or non-ionic anchor group(s) (L) or a mixture of two such groups. Independent claims are also included for the following: (a) binders containing TPU as described above; (b) magnetic dispersions containing a binder as in (a) and magnetic or magnetisable material(s); (c) a process for the production of TPU by reacting at least difunctional, NCO-terminated, linear or branched polyurethane prepolymer(s) (as hard segment) with linear or branched soft segment(s) containing functional groups which are reactive towards isocyanate groups; and (d) magnetic recording media containing binders as in (a).

公开(公告)号：NO20004713A

公开(公告)日：2001-03-23

申请号：NO20004713

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD ,  CHELBLE JOSEF

IPC: C08G18/40 ,  C08G18/00 ,  C08G18/08 ,  C08G18/42 ,  G11B5/702 ,  G11B5/84 ,  C08G63/685 ,  C08G18/10 ,  C09J175/06

CPC classification number: G11B5/7021 ,  C08G18/0828 ,  C08G18/4205

公开(公告)号：NO20004713D0

公开(公告)日：2000-09-21

申请号：NO20004713

申请日：2000-09-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  HEES ULRIKE ,  KRESS RIA ,  KOHL ALBERT ,  BRADSHAW RICHARD ,  CHELBLE JOSEF

IPC: C08G18/40 ,  C08G18/00 ,  C08G18/08 ,  C08G18/42 ,  G11B5/702 ,  G11B5/84 ,  C08G

Abstract: Thermoplastic polyurethane (TPU) block copolymers with soft segment(s) (A) and hard segment(s) (B), in which at least one hard segment B contains anionic, cationic or non-ionic anchor group(s) (L) or a mixture of two such groups. Independent claims are also included for the following: (a) binders containing TPU as described above; (b) magnetic dispersions containing a binder as in (a) and magnetic or magnetisable material(s); (c) a process for the production of TPU by reacting at least difunctional, NCO-terminated, linear or branched polyurethane prepolymer(s) (as hard segment) with linear or branched soft segment(s) containing functional groups which are reactive towards isocyanate groups; and (d) magnetic recording media containing binders as in (a).

公开(公告)号：DE19945401A1

公开(公告)日：2001-04-05

申请号：DE19945401

申请日：1999-09-22

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  KRESS RIA ,  HEES ULRIKE ,  KOHL ALBERT ,  MAIER GERHARD ,  BRADSHAW RICHARD

IPC: C08L75/04 ,  C08G18/78 ,  C09D175/04 ,  C09J175/04 ,  G11B5/702 ,  C08L75/00 ,  C08L53/00

Abstract: Binder compositions containing inorganic fillers and thermoplastic polyurethane block copolymers with soft and hard segments, in which at least one hard segment contains a bicyclic structural element formed by the criss-cross polyaddition reaction between a di-isocyanate and an azine compound. A binder composition (BC) containing (at least) (i) an inorganic filler and (ii) thermoplastic polyurethane block copolymer(s) (TPU) with soft segment(s) (A) and hard segment(s) (B), in which at least one of the hard segments contains a structural element of formula (I): R , R = optionally substituted 4-20C aromatic or heteroaromatic groups, with R = R = H, or R -R = essentially completely fluorinated 1-10C alkyl; R , R = linear or branched aliphatic residues, cycloaliphatic residues or aromatic residues (all with 4-20C, all optionally substituted); n = 1-100 . An Independent claim is also included for a method for the production of BC by mixing components (i) and (ii) together.

公开(公告)号：DE19945400A1

公开(公告)日：2001-04-05

申请号：DE19945400

申请日：1999-09-22

Applicant: EMTEC MAGNETICS GMBH

Inventor： RAETHER BENEDIKT ,  KRESS RIA ,  HEES ULRIKE ,  KOHL ALBERT ,  BRADSHAW RICHARD

IPC: C08G18/40 ,  C08G18/00 ,  C08G18/08 ,  C08G18/42 ,  G11B5/702 ,  G11B5/84 ,  C08L75/04 ,  C09D175/04

Abstract: Thermoplastic polyurethane (TPU) block copolymers with soft segment(s) (A) and hard segment(s) (B), in which at least one hard segment B contains anionic, cationic or non-ionic anchor group(s) (L) or a mixture of two such groups. Independent claims are also included for the following: (a) binders containing TPU as described above; (b) magnetic dispersions containing a binder as in (a) and magnetic or magnetisable material(s); (c) a process for the production of TPU by reacting at least difunctional, NCO-terminated, linear or branched polyurethane prepolymer(s) (as hard segment) with linear or branched soft segment(s) containing functional groups which are reactive towards isocyanate groups; and (d) magnetic recording media containing binders as in (a).