US5599782A — Soil release agents for granular laundry detergen…

Claim 1

Independent Claim 236 words

A laundry detergent composition comprising: 1) from about 5% to about 35% by weight of an anionic surfactant; ii) from about 0% to about 95% by weight of a detergency builder; iii) from about 0% to about 25% by weight of an nonionic surfactant; and iv) from about 0.25% to about 5.0% of an oligomeric ester soil release agent which consisting essentially of the reaction product prepared by (a) providing a mixture of oligomerizable monomers, having the functions MO 3 SC 6 H 4 C(O)--, M'O 3 SC 6 H 3 {C(O)O--} 2 , --(O)CC 6 H 4 C(O)-- and --OCH 2 CH 2 O-- wherein M and M' are independently selected from lithium, potassium and sodium; said mixture having a mole ratio of MO 3 SC 6 H 4 C(O)-- to --(O)CC 6 H 4 C(O)-- of from about 0.2:1 to about 1.4:1, a mole ratio of MO 3 SC 6 H 4 C(O)-- to M'O 3 SC 6 H 3 {C(O)O--} 2 of from about 0.67:1 to about 20:1; and a mole ratio of MO 3 SC 6 H 4 C(O)-- to --OCH 2 CH 2 O-- of from about 0.007:1 to about 0.51:1; provided that said mixture does not contain monomers of formula HOROH wherein R is propylene or higher alkyl; and (b) transesterifying and oligomerizing said mixture, in the presence of a catalyst, to a completion index of about 2.5 or higher.

Claim 2

Dependent Claim 236 words

A laundry detergent composition comprising: 1) from about 5% to about 35% by weight of an anionic surfactant; ii) from about 0% to about 95% by weight of a detergency builder; iii) from about 0% to about 25% by weight of an nonionic surfactant; and iv) from about 0.25% to about 5.0% of an oligomeric ester soil release agent which consisting essentially of the reaction product prepared by (a) providing a mixture of oligomerizable monomers, having the functions MO 3 SC 6 H 4 C(O)--, M'O 3 SC 6 H 3 {C(O)O--} 2 , --(O)CC 6 H 4 C(O)-- and --OCH 2 CH 2 O-- wherein M and M' are independently selected from lithium, potassium and sodium; said mixture having a mole ratio of MO 3 SC 6 H 4 C(O)-- to --(O)CC 6 H 4 C(O)-- of from about 0.2:1 to about 1.4:1, a mole ratio of MO 3 SC 6 H 4 C(O)-- to M'O 3 SC 6 H 3 {C(O)O--} 2 of from about 0.67:1 to about 20:1; and a mole ratio of MO 3 SC 6 H 4 C(O)-- to --OCH 2 CH 2 O-- of from about 0.007:1 to about 0.51:1; provided that said mixture does not contain monomers of formula HOROH wherein R is propylene or higher alkyl; and (b) transesterifying and oligomerizing said mixture, in the presence of a catalyst, to a completion index of about 2.5 or higher.

Claim 3

Dependent Claim 90 words

A composition according to claim 1 wherein said monomers used to prepare said soil release agent comprise: at least one meta--MO 3 SC 6 H 4 C(O)-- monomer selected from the group consisting of m-sodiosulfobenzoic acid, methyl m-sodiosulfobenzoate and 2-hydroxyethyl m-sodiosulfobenzoate; at least one M'O 3 SC 6 H 3 {C(O)O--} 2 monomer selected from the group consisting of dimethyl sodiosulfoisophthalate, sodiosulfoisophthalic acid and bis-2-hydroxyethyl sodiosulfoisophthalate; and at least one para--(O)CC 6 H 4 C(O)-- monomer selected from the group consisting of dimethyl terephthalate, bis-2-hydroxyethyl terephthalate and 2-hydroxyethyl methyl terephthalate.

Claim 4

Dependent Claim 43 words

A composition according to claim 2 wherein prior to said transesterification and oligomerization, said oligomerizable monomer mixture is substantially free from diethylene glycol, triethylene glycol and polyethylene glycol of formula HO(CH 2 CH 3 O) r H wherein r is four or higher.

Claim 5

Dependent Claim 80 words

A composition according to claim 3 wherein said oligomerizable monomer mixture is selected from: (I) a mixture of m-sodiosulfobenzoic acid, dimethyl sodiosulfoisophthalate, dimethyl terephthalate and ethylene glycol; (II) a mixture of m-sodiosulfobenzoic acid, sodiosulfoisophthalic acid, dimethyl terephthalate and ethylene glycol; (III) a mixture of m-sodiosulfobenzoic acid, sodiosulfoisophthalic acid, bis-2-hydroxyethyl terephthalate and ethylene glycol; (IV) a mixture of m-sodiosulfobenzoic acid, dimethyl sodiosulfoisophthalate, bis-2-hydroxyethyl terephthalate and ethylene glycol; and (V) a mixture of m-sodiosulfobenzoic acid, bis-2-hydroxyethyl sodiosulfoisophthalate, dimethyl terephthalate and ethylene glycol.

Claim 6

Dependent Claim 22 words

A fully-formulated granular laundry detergent composition according to claim 1 having a density of from about 200 gram/l to about 1200 gram/l.

Claim 7

Dependent Claim 26 words

A method of laundering fabrics, comprising treating said fabrics with an aqueous laundry bath prepared by adding said granular laundry detergent of claim 1 to water.

Claim 8

Dependent Claim 13 words

A method according to claim 6 wherein said aqueous laundry bath is underbuilt.

Claim 9

Dependent Claim 44 words

A method according to claim 7 wherein said aqueous laundry bath is prepared by adding from about 500 ppm to about 10,000 ppm of said granular laundry detergent to water having a hardness of from about 1 grains/gallon to about 25 grains/gallon combined hardness.

Claim 10

Independent Claim 193 words

A method for imparting a soil release finish to a fabric, comprising applying to said fabric the reaction product prepared by: (a) providing a mixture which consists essentially of oligomerizable monomers, having the functions MO 3 SC 6 H 4 C(O)--, M'O 3 SC 6 H 3 {C(O)O--} 2 , --(O)CC 6 H 4 C(O)-- and --OCH 2 CH 2 O-- wherein M and M' are independently selected from lithium, potassium and sodium; said mixture having a mole ratio of MO 3 SC 6 H 4 C(O)-- to --(O)CC 6 H 4 C(O)-- of from about 0.2:1 to about 1.4:1, a mole ratio of MO 3 SC 6 H 4 C(O)-- to M'O 3 SC 6 H 3 {C(O)O--} 2 of from about 0.67:1 to about 20:1; and a mole ratio of MO 3 SC 6 H 4 C(O)-- to --OCH 2 CH 2 O-- of from about 0.007:1 to about 0.51:1; provided that said mixture is substantially free from monomers of formula HOROH wherein R is propylene or higher alkyl; and (b) transesterifying and oligomerizing said mixture, in the presence of a catalyst, to a completion index of about 2.5 or higher.

Claim 11

Independent Claim 193 words

A method for imparting a soil release finish to a fabric, comprising applying to said fabric the reaction product prepared by: (a) providing a mixture which consists essentially of oligomerizable monomers, having the functions MO 3 SC 6 H 4 C(O)--, M'O 3 SC 6 H 3 {C(O)O--} 2 , --(O)CC 6 H 4 C(O)-- and --OCH 2 CH 2 O-- wherein M and M' are independently selected from lithium, potassium and sodium; said mixture having a mole ratio of MO 3 SC 6 H 4 C(O)-- to --(O)CC 6 H 4 C(O)-- of from about 0.2:1 to about 1.4:1, a mole ratio of MO 3 SC 6 H 4 C(O)-- to M'O 3 SC 6 H 3 {C(O)O--} 2 of from about 0.67:1 to about 20:1; and a mole ratio of MO 3 SC 6 H 4 C(O)-- to --OCH 2 CH 2 O-- of from about 0.007:1 to about 0.51:1; provided that said mixture is substantially free from monomers of formula HOROH wherein R is propylene or higher alkyl; and (b) transesterifying and oligomerizing said mixture, in the presence of a catalyst, to a completion index of about 2.5 or higher.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2000-02-04	2000-08-05	2001-02-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2004-02-04	2004-08-05	2005-02-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2008-02-04	2008-08-05	2009-02-04	$7700.00	Window Closed / Lapsed

Soil release agents for granular laundry detergents

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