Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1989-06-01
1991-03-12
Willis, Prince E.
Compositions
Water-softening or purifying or scale-inhibiting agents
25217423, 25217424, 252 89, 252DIG2, 252DIG15, 525437, 525448, C08F 2030, C11D 337
Patent
active
049991280
ABSTRACT:
A soil release promoting copolymer of poly(ethylene terephthalate/ethylene isophthalate) and poly(oxyethylene terephthalate/oxyethylene isophthalate) having a weight average molecular weight in the range of 6,000 to 40,000 is prepared by reacting an ethylene terephthalate/ethylene isophthalate copolymer with polyethylene glycol in the presence of a transesterification catalyst. The soil release promoting copolymer provides improved soil release properties for oil and greasy stains on polyester fabrics at high and low wash temperatures, is stable even at high alkalinity levels, and can be used at lower loadings than conventional soil release polymers without loss of efficacy.
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Colgate-Palmolive Co.
Grill Murray M.
Lieberman Bernard
Sullivan Robert C.
Willis Prince E.
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