Global patent index - EP 1045865 A1

EP 1045865 A1 2000-10-25 - METHOD FOR PRODUCING PARTICLE-SHAPED POLYMERS

Title (en)

METHOD FOR PRODUCING PARTICLE-SHAPED POLYMERS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON TEILCHENFÖRMIGEN POLYMERISATEN

Title (fr)

PROCEDE POUR PRODUIRE DES POLYMERES PARTICULAIRES

Publication

EP 1045865 A1 (DE)

Application

EP 99907397 A

Priority

  • DE 19802128 A
  • EP 9900393 W

Abstract (en)

[origin: DE19802128A1] An elastomeric particulate polymer is prepared using ethylenically unsaturated monomers in the presence of a radical initiator has a small particle size and is readily precipitated from a dispersion. The elastomeric particulate polymer (I) is prepared by: (a) dispersing (A11) 85-100 wt.% ethylenically unsaturated monomers, whose homopolymer is elastomeric and (A12) 0-15 wt.% of a crosslinking monomer in water in the presence of a protective colloid and an emulsifier to form a dispersion having an average particle diameter of 0.08-8 micro m; (b) polymerization of the droplets with a radical polymerization initiator; and optionally (c) graft polymerization of the resulting mixture in the presence of ethylenically unsaturated monomers. Independent claims are included for: (i) a molding composition comprising 0.1-80 wt.% of (A); 20-99.9 wt.% of a polymer matrix (B); 0-50 wt.% of a fibrous or particulate filler (C); and 0-30 wt.% of further additives (D). (ii) fiber, film or molded articles prepared from the molding composition.

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

C08F 2/24; C08F 291/02; C08L 57/00

IPC 8 full level (invention and additional information)

C08F 2/22 (2006.01); C08F 2/24 (2006.01); C08F 20/12 (2006.01); C08F 265/06 (2006.01)

CPC (invention and additional information)

C08F 20/12 (2013.01); C08F 2/22 (2013.01); C08F 265/06 (2013.01)

Combination set (CPC)

  1. C08F 20/12 + C08F 2/22
  2. C08F 265/06 + C08F 2/18

Citation (search report)

See references of WO 9937690A1

Designated contracting state (EPC)

DE

EPO simple patent family

DE 19802128 A1 19990722; EP 1045865 A1 20001025; WO 9937690 A1 19990729

INPADOC legal status

2002-09-25 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020730

2000-10-25 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000821

2000-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE