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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
1742/MAS/1998A
(22) Date of filing of Application:04/08/1998 (43) Publication Date: 09/06/2006
(54) Title of the invention:
STRATIFICATION RESISTANT
EMULSIONS
(51)International classification: C10L 1/32,
C08L 53/00
(31) Priority Document No.PO8410
(32) Priority Date:05/08/1997
(33) Name of priority country:
AUSTRALIA
(87) WIPO No. :PCT/AU98/00614
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Application No.:
Filed on:
(71) Name of Applicant
APACE RESEARCH LIMITED
Address of Applicant:
P O BOX 166, DUNGOG,
NEW SOUTH WALES, 2420
AUSTRALIA
(72) Name of the Inventor(s):
REEVES, Russell, Robert
(57) Abstract
Emulsions containing a hydrocarbon liquid in a continuous phase and alcohol and/or water in a dispersed phase. The
emulsions are stabilised by an emulsifier and a coupling agent. The emulsifier is a copolymer containing at least one
relatively hydrophobic polymeric block of styrene or ring substituted styrene monomer, and at least one relatively
hydrophilic polymeric block of at least one monomer, such as ethylene oxide, selected from the group having the
formula H(O-R)¿n?OH where R is an aliphatic radical containing from 1 to 4 carbon atoms and n is a number
between 20 and 300. The coupling agent is a copolymer containing at least one polymeric block of styrene or ring
substituted styrene monomer, and at least one block being of a saturated or unsaturated aliphatic hydrocarbon moiety,
such as butadiene. The emulsifier is present in an amount sufficient to form micelles of the relatively hydrophilic
polymer block sufficient to contain the dispersed phase and the coupling agent is present in an amount that is
sufficient to substantially prevent the dispersed phase droplets from coalescing while not being present in a
sufficiently high amount that micelles of the styrene containing polymeric blocks of the coupling agent form in the
continuous phase of the emulsion.
The Patent Office Journal 09/06/2006 10795