Global Patent Index - EP 0855995 A4

EP 0855995 A4 2000-01-12 - SULFOMETHYLOLATED LIGNIN-BASED CONCRETE ADMIXTURES

Title (en)

SULFOMETHYLOLATED LIGNIN-BASED CONCRETE ADMIXTURES

Title (de)

ZUSATZMITTEL FÜR BETON AUF BASIS VON SULFOMETHYLOLIERTEM LIGNIN

Title (fr)

ADJUVANTS DU BETON A BASE DE LIGNINE SULFOMETHYLOLATEE

Publication

EP 0855995 A4 (EN)

Application

EP 96938620 A

Priority

  • US 9616232 W
  • US 9513836 W

Abstract (en)

[origin: WO9713732A2] The invention provides for an admixture for reducing the water content of a concrete mix. The admixture comprises an alkaline solution of a lignin in a sulfomethylolated form. The sulfomethylolated lignin in the admixture can also be cross-linked with a cross-linking agent. The admixture further comprises an air detrainer. Also provided are novel cement compositions comprising the admixture of the invention.

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

C04B 24/00; C04B 24/18

IPC 8 full level (invention and additional information)

C04B 24/16 (2006.01); C04B 24/18 (2006.01); C04B 28/02 (2006.01); C04B 103/30 (2006.01); C04B 103/50 (2006.01)

IPC 8 main group level (invention and additional information)

C04B (2006.01)

CPC (invention and additional information)

C04B 24/18 (2013.01); C04B 28/02 (2013.01)

Combination set (CPC)

  1. C04B 24/18 + C04B 20/023 + C04B 2103/302
  2. C04B 28/02 + C04B 24/18 + C04B 2103/50
  3. C04B 28/02 + C04B 24/003 + C04B 24/18
  4. C04B 28/02 + C04B 2103/302 + C04B 2103/50
  5. C04B 24/18 + C04B 2103/302

Citation (search report)

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 9713732 A2 19970417; WO 9713732 A3 19970515; CA 2231630 A1 19970417; CA 2231641 A1 19970417; CN 1219921 A 19990616; EP 0855995 A2 19980805; EP 0855995 A4 20000112; JP H11513358 A 19991116; JP H11513653 A 19991124; NO 981625 A 19980605; NO 981625 D0 19980408; NO 981626 A 19980605; NO 981626 D0 19980408; WO 9713733 A1 19970417

INPADOC legal status


2001-01-10 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20000503

2000-01-12 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 19991129

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2000-01-12 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7C 04B 24/00 A, 7C 04B 24/18 B

1998-08-05 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19980417

1998-08-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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