A lime soap dispersant comprising a polyester represented by the general
formula:
##STR1##
wherein A represents a --CO-- group, R.sup.1 represents a C.sub.2-4
alkylene group, R.sup.2 represents a C.sub.3-4 alkylene group, R.sup.3
represents a phenylene group, naphthylene group or biphenylene group,
R.sup.4 represents a C.sub.2-8 alkylene group, R.sup.5 represents a
C.sub.2-8 alkylene group, R.sup.6 represents a phenylene, naphthylene or
biphenylene group which may be substituted with a --SO.sub.3 M or --COOM
group, X represents H, a C.sub.1-4 alkyl group, --R.sup.7 SO.sub.3 M
group, --R.sup.8 COOM group or --C(O)R.sup.9 group, M represents H or
water-soluble cation, and R.sup.7, R.sup.8 and R.sup.9 independently
represent a C.sub.1-4 alkyl group, m1 and m2 are independently a number of
0 to 25 while m1+m2 is 3 to 25, n1 is a number of 1 to 40, n2 is 0 to 5,
n3 is 1 to 40, n4 is 1 to 10, n5 is 0 to 5, and n6 is 1 to 40.
Un dispersor del jabón de la cal que abarca un poliester representado por el fórmula general: ## del ## STR1 en donde A representa un --CO -- grupo, R.sup.1 representa un grupo del alkylene C.sub.2-4, R.sup.2 representa un grupo del alkylene C.sub.3-4, R.sup.3 representa un grupo del phenylene, el grupo del naphthylene o el grupo del biphenylene, R.sup.4 representa un grupo del alkylene C.sub.2-8, R.sup.5 representa un grupo del alkylene C.sub.2-8, R.sup.6 representa un grupo del phenylene, del naphthylene o del biphenylene que se pueda substituir con a -- SO.sub.3 M o -- el grupo del coom, X representa H, un grupo alkyl C.sub.1-4, -- grupo de R.sup.7 SO.sub.3 M, -- grupo de R.sup.8 COOM o -- C(O)R.sup.9 el grupo, M representa H o el catión soluble en agua, y R.sup.7, R.sup.8 y R.sup.9 representan independientemente C.sub.1-4 un grupo alkyl, m1 y los m2 están independientemente 25 mientras que m1+m2 es 3 a 25, n1 es un número de 1 a de 40, el n2 es 0 a 5, n3 es 1 a 40, n4 es 1 a 10, n5 es 0 a 5, y n6 es 1 a 40.
