Global patent index - EP 1062286 A1

EP 1062286 A1 2000-12-27 - AQUEOUS BRANCHED POLYMER DISPERSANT FOR HYDROPHOBIC MATERIALS

Title (en)

AQUEOUS BRANCHED POLYMER DISPERSANT FOR HYDROPHOBIC MATERIALS

Title (de)

VERZWEIGTE POLYMER DISPERGIERMITTEL FÜR HYDROPHOBE MATERIALIEN

Title (fr)

DISPERSANT A BASE DE POLYMERE AQUEUX RAMIFIE POUR MATERIAUX HYDROPHOBES

Publication

EP 1062286 A1 (EN)

Application

EP 98910190 A

Priority

US 9804352 W

Abstract (en)

[origin: WO9945078A1] A waterbased dispersion useful for forming aqueous coating compositions containing dispersed hydrophobic material, an aqueous carrier and a branched polymer dispersant (binder); the branched polymer has a weight average molecular weight of about 5,000 - 100,000 and contains 20-80 % by weight of a hydrophilic backbone and correspondingly 80-20 % by weight of macromonomer side chains; wherein the backbone is of polymerized ethylenically unsaturated monomers and 2-30 % by weight, based on the weight of the backbone of polymerized ethylenically unsaturated monomers having an acid-functional group; and wherein at least 10 % of the acid-functional groups are neutralized with an amine or an inorganic base and is hydrophilic in comparison to the side chains; and the side chains are of macromonomers of polymerized ethylenically unsaturated monomers that are polymerized into the backbone via an ethylenically unsaturated group and the macromonomers have a weight average molecular weight of about 1,000-30,000 and wherein the weight ratio of hydrophobic material to binder is about 1/100 - 200/100.

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

C09D 151/00; C08F 290/04

IPC 8 full level (invention and additional information)

C08F 290/04 (2006.01); C09D 151/00 (2006.01); C09D 155/00 (2006.01)

CPC (invention and additional information)

C09D 151/00 (2013.01); C08F 290/04 (2013.01)

Citation (search report)

See references of WO 9945078A1

Designated contracting state (EPC)

BE DE FR GB

EPO simple patent family

WO 9945078 A1 19990910; CA 2321798 A1 19990910; EP 1062286 A1 20001227; JP 2002505370 A 20020219

INPADOC legal status

2008-10-29 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20080311

2003-04-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030212

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000731

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE FR GB