公开(公告)号：DE59209521D1

公开(公告)日：1998-11-19

申请号：DE59209521

申请日：1992-04-23

Applicant: BASF AG

Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR

IPC: C08K5/09 ,  H01B3/44

Abstract: Carboxylic acids of the general formula I where the indices and the variables have the following meanings: R , R and R : independently of one another, a hydrogen atom and a hydroxyl, carboxyl and C1- to C6-alkyl group, x, y and z: independently of one another, 0 or an integer from 1 to 6, and/or their anhydrides are capable of permanently suppressing the formation of water trees in electrical medium- and high-voltage cables containing electrically insulating and/or electrically semiconducting layers based on ethylene homopolymers and/or copolymers. This is even the case if the layers concerned contain water-soluble, basic salts. Accordingly, polymeric mixtures based on ethylene homopolymers and/or copolymers containing the abovementioned carboxylic acids and/or their anhydrides are eminently suitable for manufacturing the electrically insulating and electrically semiconducting layers such as those used in electrical medium- and high-voltage cables.

公开(公告)号：DK0513569T3

公开(公告)日：1999-06-23

申请号：DK92106900

申请日：1992-04-23

Applicant: BASF AG

Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR

IPC: C08K5/09 ,  H01B3/44

Abstract: Carboxylic acids of the general formula I where the indices and the variables have the following meanings: R , R and R : independently of one another, a hydrogen atom and a hydroxyl, carboxyl and C1- to C6-alkyl group, x, y and z: independently of one another, 0 or an integer from 1 to 6, and/or their anhydrides are capable of permanently suppressing the formation of water trees in electrical medium- and high-voltage cables containing electrically insulating and/or electrically semiconducting layers based on ethylene homopolymers and/or copolymers. This is even the case if the layers concerned contain water-soluble, basic salts. Accordingly, polymeric mixtures based on ethylene homopolymers and/or copolymers containing the abovementioned carboxylic acids and/or their anhydrides are eminently suitable for manufacturing the electrically insulating and electrically semiconducting layers such as those used in electrical medium- and high-voltage cables.

公开(公告)号：AT172320T

公开(公告)日：1998-10-15

申请号：AT92106900

申请日：1992-04-23

Applicant: BASF AG

Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR ,  CHOME - -

IPC: C08K5/09 ,  H01B3/44

Abstract: Carboxylic acids of the general formula I where the indices and the variables have the following meanings: R , R and R : independently of one another, a hydrogen atom and a hydroxyl, carboxyl and C1- to C6-alkyl group, x, y and z: independently of one another, 0 or an integer from 1 to 6, and/or their anhydrides are capable of permanently suppressing the formation of water trees in electrical medium- and high-voltage cables containing electrically insulating and/or electrically semiconducting layers based on ethylene homopolymers and/or copolymers. This is even the case if the layers concerned contain water-soluble, basic salts. Accordingly, polymeric mixtures based on ethylene homopolymers and/or copolymers containing the abovementioned carboxylic acids and/or their anhydrides are eminently suitable for manufacturing the electrically insulating and electrically semiconducting layers such as those used in electrical medium- and high-voltage cables.

公开(公告)号：DE4141272A1

公开(公告)日：1993-06-17

申请号：DE4141272

申请日：1991-12-14

Applicant: BASF AG

Inventor： VOGT HEINZ DR ,  SCHLAG JOHANNES DR ,  HENNIG INGOLF DR ,  MUEHLENBERND THOMAS DR

IPC: C08K5/09 ,  H01B3/44

Abstract: Use of carboxlic acids (I) of formula (I) (where R1, R2, R3 are H, OH, COOH, ot 1-6C alkyl; and x, y, z are 0-6) and/or anhydrides (IA) of at least one (I) to inhibit formation or growth of water trees in ethylene (homo- and/or co-) polymers (II) under influence of strong electric fields. (A) Electrically insulating mixts. (III) based on (II) contg. on (III), 0.01-5% (all pts. wt.) at least one (I) and/or at least one (IA); and (B) Electrically semiconducting mixts. (IV) based on (II), contg. on (IV), (B1) 10-50% electrically conductive pigment; (B2) 0.01-5% at least one (I) and/or at least one (IA), are also claimed. (I) is pref. acetic, propionic, butyric, isobutyric, valeric, isovaleric, pivalic, lauric, myristic, palmitic, stearic, malonic succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, malic, tartaric, racemic, tartronic, mesoxalic or citric acid and (IA) is anhydride of one of these acids and/or mixed anhydride of at least two of these acids, and is esp. citric acid and/or its anhydride.

公开(公告)号：DE4115751A1

公开(公告)日：1992-11-19

申请号：DE4115751

申请日：1991-05-15

Applicant: BASF AG

Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR

IPC: C08K5/09 ,  H01B3/44

Abstract: Use of carboxlic acids (I) of formula (I) (where R1, R2, R3 are H, OH, COOH, ot 1-6C alkyl; and x, y, z are 0-6) and/or anhydrides (IA) of at least one (I) to inhibit formation or growth of water trees in ethylene (homo- and/or co-) polymers (II) under influence of strong electric fields. (A) Electrically insulating mixts. (III) based on (II) contg. on (III), 0.01-5% (all pts. wt.) at least one (I) and/or at least one (IA); and (B) Electrically semiconducting mixts. (IV) based on (II), contg. on (IV), (B1) 10-50% electrically conductive pigment; (B2) 0.01-5% at least one (I) and/or at least one (IA), are also claimed. (I) is pref. acetic, propionic, butyric, isobutyric, valeric, isovaleric, pivalic, lauric, myristic, palmitic, stearic, malonic succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, malic, tartaric, racemic, tartronic, mesoxalic or citric acid and (IA) is anhydride of one of these acids and/or mixed anhydride of at least two of these acids, and is esp. citric acid and/or its anhydride.

公开(公告)号：AT296856T

公开(公告)日：2005-06-15

申请号：AT00122572

申请日：2000-10-17

Applicant: BASF AG

Inventor： BIEDERMANN NORBERT DR ,  SCHERR GUENTER DR ,  JAECKH CHRISTOF DR ,  DECHER JAKOB ,  ANDRE VALERIE DR ,  SCHNURR WERNER DR ,  HENNIG INGOLF DR

IPC: C08L61/28 ,  C08L67/02 ,  C09D161/28 ,  C08G12/32

公开(公告)号：DE19638036A1

公开(公告)日：1998-03-19

申请号：DE19638036

申请日：1996-09-18

Applicant: BASF AG

Inventor： PLACHETTA CHRISTOPH DR ,  HENNIG INGOLF DR ,  KELLER BRUNO

IPC: C08K3/04 ,  C08K3/22 ,  C08L59/00 ,  C08L77/00 ,  C08L59/04 ,  C08J5/00 ,  C08L101/12

公开(公告)号：DE4135202A1

公开(公告)日：1992-11-19

申请号：DE4135202

申请日：1991-05-15

Applicant: BASF AG

Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR

IPC: C08K5/09 ,  H01B3/44

Abstract: Use of carboxlic acids (I) of formula (I) (where R1, R2, R3 are H, OH, COOH, ot 1-6C alkyl; and x, y, z are 0-6) and/or anhydrides (IA) of at least one (I) to inhibit formation or growth of water trees in ethylene (homo- and/or co-) polymers (II) under influence of strong electric fields. (A) Electrically insulating mixts. (III) based on (II) contg. on (III), 0.01-5% (all pts. wt.) at least one (I) and/or at least one (IA); and (B) Electrically semiconducting mixts. (IV) based on (II), contg. on (IV), (B1) 10-50% electrically conductive pigment; (B2) 0.01-5% at least one (I) and/or at least one (IA), are also claimed. (I) is pref. acetic, propionic, butyric, isobutyric, valeric, isovaleric, pivalic, lauric, myristic, palmitic, stearic, malonic succinic, glutaric, adipic, pimelic, suberic, azelaic, sebacic, malic, tartaric, racemic, tartronic, mesoxalic or citric acid and (IA) is anhydride of one of these acids and/or mixed anhydride of at least two of these acids, and is esp. citric acid and/or its anhydride.