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1. (WO2001038412) AQUEOUS, POLYMODAL, MULTISTAGE POLYMER EMULSIONS

Pub. No.:    WO/2001/038412    International Application No.:    PCT/EP2000/011349
Publication Date: Fri Jun 01 01:59:59 CEST 2001 International Filing Date: Fri Nov 17 00:59:59 CET 2000
IPC: C08F 2/22
C08F 285/00
C09D 151/00
Applicants: AVECIA B.V.
OVERBEEK, Gerardus, Cornelis
PETERS, Antonius, Carolus, Ida, Adrianus
Inventors: OVERBEEK, Gerardus, Cornelis
PETERS, Antonius, Carolus, Ida, Adrianus
Title: AQUEOUS, POLYMODAL, MULTISTAGE POLYMER EMULSIONS
Abstract:
Aqueous emulsion of a polymodal multistage polymeric material, wherein: (i) at least 50 % of the polymodal multistage polymeric material comprises the polymers of at least two polymerisation stages having a Tg difference of ≥ 20 °C, more preferably ≥ 40 °C, and most preferably ≥ 60 °C; (ii) at least 50 % of the polymodal multistage polymeric material comprises the polymers of at least two polymerisation stages having a Dw differing by ≥ 50 nm, preferably ≥ 80 nm and more preferably ≥ 100 nm; and (iii) the means to form at least one of the differing Tg's in (i) and at least one of the differing Dw's in (ii) are carried out in different stages of the multistage polymerisation to form the polymeric material. The polymer emulsion is useful for protective coatings, printing inks, overpring lacquer formulations, polishes, varnishes, sealants, paint formulations and adhesives.