Global Patent Index - EP 1045864 A1

EP 1045864 A1 2000-10-25 - MICROSUSPENSION POLYMER CONTAINING ACID GROUPS

Title (en)

MICROSUSPENSION POLYMER CONTAINING ACID GROUPS

Title (de)

SÄUREGRUPPEN ENTHALTENDES MIKROSUSPENSIONSPOLYMERISAT

Title (fr)

POLYMERE OBTENU PAR MICROSUSPENSION RENFERMANT DES GROUPES ACIDE

Publication

EP 1045864 A1 (DE)

Application

EP 99908813 A

Priority

  • DE 19802120 A
  • EP 9900394 W

Abstract (en)

[origin: DE19802120A1] A microsuspension polymer (A') having an average particle diameter of 0.08-100 microns comprises (A11) 0.05-20 wt.% of an ethylenically unsaturated monomer having free acidic groups (A12) 80-99.95 wt.% of copolymerizable monomers, whose homopolymer is free of basic groups and (A13) 0-10 wt.% crosslinking monomers. Independent claims are included for: (1) a graft polymer micro-suspension (A) comprising (A1) 20-99.95 wt.% of a graft core having an average particle diameter of 0.08-100 microns and (A2) 0.05-80 wt.% of a graft sheath whereby both (A1) and (A2) are free of basic groups and (A1) and/or (A2) is formed at least partially of ethylenically unsaturated monomers having free acidic groups. (2) a process for the production of (A') or (A) by dispersion of (A') or the corresponding monomers of (A1) in water in the presence of a protective colloid to form a dispersion having an average particle diameter of 0.08-100 microns, polymerisation of the droplets with a radical polymerisation initiator to a conversion of greater than 50% and optionally graft polymerisation of the resulting mixture with monomers of (A2). (3) a molding composition comprising 1-85 wt.% graft polymer (A), 15-99 wt.% (B) - a polymer matrix consisting of polymers of styrene, alpha -methylstyrene, acrylonitrile, methacrylonitrile and/or (meth)acrylic acid ester, 0-50 wt.% (C) - fibrous and/or particulate fillers and 0-40 wt.% (D) - other additives; and (4) fibers, film or molded articles prepared from the molding composition.

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

C08F 2/18; C08F 220/18; C08F 265/04; C08F 291/02

IPC 8 full level (invention and additional information)

C08F 2/18 (2006.01); C08F 265/06 (2006.01); C08F 291/00 (2006.01)

CPC (invention and additional information)

C08F 265/06 (2013.01); C08F 2/18 (2013.01); C08F 291/00 (2013.01)

Combination set (CPC)

  1. C08F 265/06 + C08F 2/18
  2. C08F 291/00 + C08F 2/18

Citation (search report)

See references of WO 9937689A1

Designated contracting state (EPC)

DE

EPO simple patent family

DE 19802120 A1 19990722; EP 1045864 A1 20001025; WO 9937689 A1 19990729

INPADOC legal status


2003-01-08 [18W] WITHDRAWN

- Date of withdrawal: 20021014

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

- Effective date: 20000821

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

- Kind Code of Ref Document: A1

- Designated State(s): DE