EP 0098187 B1 19860827 - ZEOLITE AS A DETERGENT AID
Title (en)
ZEOLITE AS A DETERGENT AID
Publication
Application
Priority
FR 8210638 A 19820618
Abstract (en)
[origin: US4519933A] Type A, especially type 4A zeolites are well adapted as detergent builders, said zeolites comprising (i) primary particles having a mean particle diameter ranging from 0.1 to 10 mu , (ii) a cation exchange capacity in excess of about 100 mg CaCO3/g of anhydrous material, and (iii) a rate constant, relative to the surface area of the zeolite per liter of wash solution, in excess of about 0.15 s-1 lm-2. The builders are prepared by first determining the value of the rate constant for a given zeolite sample. Since a higher rate constant value corresponds to a lower degree of salt incrustation on fabrics, only those zeolites having a value above the predetermined minimum will be incorporated into detergents. Thus, zeolites otherwise appearing identical can be differentiated, with only those not causing high levels of incrustation being selected.
IPC 1-7
IPC 8 full level
C11D 3/12 (2006.01)
CPC (source: EP KR US)
C11D 3/12 (2013.01 - KR); C11D 3/128 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0098187 A1 19840111; EP 0098187 B1 19860827; AT E21704 T1 19860915; BR 8303216 A 19840131; CA 1190204 A 19850709; DE 3365635 D1 19861002; DK 280283 A 19831219; DK 280283 D0 19830617; FI 73729 B 19870731; FI 73729 C 19871109; FI 832225 A0 19830617; FI 832225 L 19831219; FR 2528722 A1 19831223; FR 2528722 B1 19841207; IE 55459 B1 19900926; IE 831434 L 19831218; JP S5956497 A 19840331; KR 840004939 A 19841031; KR 880000857 B1 19880526; NO 160719 B 19890213; NO 160719 C 19890524; NO 832174 L 19831219; PT 76886 A 19830701; PT 76886 B 19860124; US 4519933 A 19850528; YU 134683 A 19860228
DOCDB simple family (application)
EP 83401175 A 19830609; AT 83401175 T 19830609; BR 8303216 A 19830617; CA 430597 A 19830617; DE 3365635 T 19830609; DK 280283 A 19830617; FI 832225 A 19830617; FR 8210638 A 19820618; IE 143483 A 19830617; JP 10911883 A 19830617; KR 830001953 A 19830507; NO 832174 A 19830616; PT 7688683 A 19830617; US 50191583 A 19830607; YU 134683 A 19830617