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

C04B 24/00; C04B 24/18

IPC 8 full level

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

C04B (2006.01)

CPC

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

C-Set

  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

DOCDB simple 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 D0 19980408; NO 981625 L 19980605; NO 981626 D0 19980408; NO 981626 L 19980605; WO 9713733 A1 19970417