(19)
(11) EP 0 253 676 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.09.1988 Bulletin 1988/38

(43) Date of publication A2:
20.01.1988 Bulletin 1988/03

(21) Application number: 87306355

(22) Date of filing: 17.07.1987
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 17.07.1986 AU 698986

(71) Applicant: R & C PRODUCTS PTY. LIMITED
 ()

(72) Inventor:
  • Silvester, Raymond Neville
     ()

   


(54) Amine-acid thickening compositions


(57) A thickened aqueous composition comprising at least one compound acid or acidic salt, a thickening agent which is at least one of the compounds selected from the group consisting of compounds of the formula:

wherein R, Ri R2, R3, R4 and R5 are specified substituent groups, and optionally a strong ionic salt, the thickening agent and the acid or acidic salt being together substantially water soluble, and wherein
the thickened aqueous composition has a viscosity of not less than 30 centipoise at 25°C when measured with a Brookfield RVT viscometer at 50 rpm using a No. I spindle.





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