Global Patent Index - EP 1030879 A1

EP 1030879 A1 2000-08-30 - WATER TREE RETARDING ADDITIVE

Title (en)

WATER TREE RETARDING ADDITIVE

Title (de)

ADDITIVE ZUM SCHUTZ GEGEN WASSERBÄUMCHEN

Title (fr)

ADDITIF RETARDANT L'APPARITION DES TRACES DE SOUILLURES PAR HUMIDITE

Publication

EP 1030879 A1 (EN)

Application

EP 98951902 A

Priority

  • SE 9801977 W
  • SE 9704137 A

Abstract (en)

[origin: WO9924504A1] A water tree retarding additive and a composition for an electric cable comprising it are disclosed. The additive has general formula (I) where n = 1-3, m = 0-3, R1 = -H, -CH3, -(CH2)nCOOH, R2 = (a) a linear or branched, saturated C4-C20 alkyl, (b) a linear or branched, unsaturated C4-C20 alkyl, (c) a linear or branched, saturated C4-C20 acyl, if m=0, (d) a linear or branched, unsatured C4-C20 acyl, if m=0, (e) an aromatic group, (e) in formula (II) where R3 = (a)-(d), and m = 1-3. The additive preferably is N-lauroyl ethylenediamine-N,N',N'-triacetic acid.

IPC 1-7 (main, further and additional classification)

C08K 5/17; C08L 23/04

IPC 8 full level (invention and additional information)

C08K 5/17 (2006.01); C08L 23/04 (2006.01); H01B 1/24 (2006.01); H01B 3/44 (2006.01); H01B 7/28 (2006.01)

CPC (invention and additional information)

H01B 7/2813 (2013.01); C08K 5/175 (2013.01); H01B 1/24 (2013.01); H01B 3/441 (2013.01); H01B 3/447 (2013.01)

Combination set (CPC)

C08K 5/175 + C08L 23/04

Citation (search report)

See references of WO 9924504A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

EPO simple patent family

WO 9924504 A1 19990520; AU 9773698 A 19990531; CN 1281483 A 20010124; EP 1030879 A1 20000830; JP 2001522919 A 20011120; SE 9704137 D0 19971112; SE 9704137 L 19990513

INPADOC legal status


2003-06-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021203

2002-09-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020722

2000-08-30 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000512

2000-08-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE