Global Patent Index - EP 1263854 A1

EP 1263854 A1 2002-12-11 - POWDERY COMPOSITION BASED ON WATER-SOLUBLE POLYMERS

Title (en)

POWDERY COMPOSITION BASED ON WATER-SOLUBLE POLYMERS

Title (de)

PULVERFÖRMIGE ZUSAMMENSETZUNG AUF DER BASIS VON WASSERLÖSLICHEN POLYMEREN

Title (fr)

COMPOSITION PULVERULENTE A BASE DE POLYMERES SOLUBLES DANS L'EAU

Publication

EP 1263854 A1 (DE)

Application

EP 01907511 A

Priority

  • DE 10005707 A
  • EP 0101367 W

Abstract (en)

[origin: WO0158994A1] The invention relates to a powdery composition based on water-soluble polymers which essentially contains: a) 50 to 95 wt. % of a water-soluble polymer which is synthesized from sulfonates of lignin and/or sulfonated melamine formaldehyde, naphthalene formaldehyde and/or ketone formaldehyde condensation products, and; b) 5 to 95 wt. % of a fine particle mineral supporting material with a preferred specific surface ranging from 0.01 to 500 m<2>/g. Calcium carbonate, dolomite, clays, fly ashes, Portland cements, and gypsum are suitable typical supporting materials and, to this end, should preferably comprise a particle size ranging from 0.1 to 1,000 mu m. The invention also relates to a method for producing said composition, whereby the water-soluble polymer is first of all worked into the respective supporting material, which is carried out, in particular, in the form of an aqueous solution during at least one step and can additionally involve intermediate drying steps. These compositions are used in quantities ranging from 0.05 to 5 wt. % of polymer in building materials such as bituminous products, cement, calcium-based building materials and/or oil field building materials, whereby they can also be combined with other building material additives and with filling material mixtures. The powdery compositions are characterized by, among other things, their very good pourability, they are tack-free, extremely easy to dose and to process, and they positively influence product properties such as flowability.

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

C08K 3/00; C04B 24/18; C04B 24/22; C04B 28/02; C08L 61/18; C08L 61/32; C08L 97/00

IPC 8 full level (invention and additional information)

C04B 24/18 (2006.01); C04B 14/02 (2006.01); C04B 16/02 (2006.01); C04B 16/04 (2006.01); C04B 18/02 (2006.01); C04B 24/30 (2006.01); C04B 26/26 (2006.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C08K 3/34 (2006.01)

CPC (invention and additional information)

C04B 40/0042 (2013.01); C04B 18/022 (2013.01); C04B 26/26 (2013.01); C04B 28/02 (2013.01); C08K 3/34 (2013.01); Y02W 30/97 (2015.05)

Combination set (CPC)

  1. C04B 40/0042 + C04B 14/06 + C04B 24/22 + C04B 24/22
  2. C04B 40/0042 + C04B 14/28 + C04B 24/22
  3. C04B 28/02 + C04B 14/28 + C04B 18/24 + C04B 24/22 + C04B 24/26
  4. C08K 3/34 + C08L 97/00

Citation (search report)

See references of WO 0158994A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0158994 A1 20010816; DE 10005707 A1 20011031; DE 10005707 B4 20041014; EP 1263854 A1 20021211; JP 2003522091 A 20030722; US 2003004246 A1 20030102

INPADOC legal status


2006-05-24 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20051112

2003-10-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030825

2003-01-02 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: WACHE, STEFFEN

2003-01-02 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: DEGENKOLB, MATHIAS

2003-01-02 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: HOETZL, KLAUS

2003-01-02 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: KELLERMANN, JANA

2002-12-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020715

2002-12-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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