US5256168A — Sulfobenzoyl end-capped ester oligomers useful as…

Claim 1

Independent Claim 164 words

A granular detergent composition comprising, by weight: (a) from about 5% to about 80% of detergent surfactant; and (b) from about 0.1% to about 10% of an oligomeric or polymeric composition comprising a substantially linear, sulfobenzoyl end-capped ester; said ester comprising, per mole of said ester: (i) from about 1 to about 2 moles of sulfobenzoyl endcapping units of the formula (MO 3 S) (C 6 H 4 )C(O)-- wherein M is sodium; (ii) from about 2 to about 10 moles of oxyethyleneoxy units and oxy-1,2-propyleneoxy units in a mole ratio of oxyethyleneoxy units to oxy-1,2-propyleneoxy units of from about 2.5:1 to about 15:1; and (iii) from about 1 to about 9 moles of terephthaloyl units; wherein the mole ratio of said oxyalkyleneoxy units to said terephthaloyl units is from about 2:1 to about 1.1:1; and wherein said ester is at least about 90% by weight amorphous in form and access of free water to the ester is limited to maintain the amorphous form.

Claim 2

Dependent Claim 164 words

A granular detergent composition comprising, by weight: (a) from about 5% to about 80% of detergent surfactant; and (b) from about 0.1% to about 10% of an oligomeric or polymeric composition comprising a substantially linear, sulfobenzoyl end-capped ester; said ester comprising, per mole of said ester: (i) from about 1 to about 2 moles of sulfobenzoyl endcapping units of the formula (MO 3 S) (C 6 H 4 )C(O)-- wherein M is sodium; (ii) from about 2 to about 10 moles of oxyethyleneoxy units and oxy-1,2-propyleneoxy units in a mole ratio of oxyethyleneoxy units to oxy-1,2-propyleneoxy units of from about 2.5:1 to about 15:1; and (iii) from about 1 to about 9 moles of terephthaloyl units; wherein the mole ratio of said oxyalkyleneoxy units to said terephthaloyl units is from about 2:1 to about 1.1:1; and wherein said ester is at least about 90% by weight amorphous in form and access of free water to the ester is limited to maintain the amorphous form.

Claim 3

Dependent Claim 19 words

A granular detergent composition according to claim 1 comprising from about 10% to about 60% of an anionic surfactant.

Claim 4

Dependent Claim 62 words

A granular detergent composition according to claim 2 wherein the anionic surfactant is selected from the group consisting of C 11 -C 13 linear alkylbenzene sulfonates, C 10 -C 18 alkyl sulfates, and C 10 -C 18 alkyl sulfates ethoxylated with an average of from about 1 to about 6 moles of ethylene oxide per mole of alkyl sulfate, and mixtures thereof.

Claim 5

Dependent Claim 20 words

A granular detergent composition according to claim 1 further comprising from about 10% to about 90% of a detergent builder.

Claim 6

Dependent Claim 25 words

A granular detergent composition according to claim 4 wherein the detergent builder is a tripolyphosphate, pyrophosphate, carbonate, polycarboxylate, or aluminosilicate detergency builder, or mixtures thereof.

Claim 7

Dependent Claim 79 words

A granular detergent composition according to claim 5 comprising from about 20% to about 60% of the detergent builder and from about 15% to about 50% of an anionic surfactant selected from the group consisting of C 11 -C 13 linear alkylbenzene sulfonates, C 10 -C 18 alkyl sulfates, and C 10 -C 18 alkyl sulfates ethoxylated with an average of from about 1 to about 6 moles of ethylene oxide per mole of alkyl sulfate, and mixtures thereof.

Claim 8

Dependent Claim 106 words

A granular detergent composition according to claim 4 wherein the oligomeric or polymeric composition comprises from about 25% to about 100% by weight of ester having the empirical formula (CAP) x (EG/PG) y (T) z ; wherein (CAP) represents the sodium salt form of said sulfobenzoyl end-capping units i); (EG/PG) represents said oxyethyleneoxy and oxy-1,2-propyleneoxy units ii); (T) represents said terephthaloyl units iii); x is from about 1 to 2; y is from about 2.25 to about 7; z is from about 1.25 to about 6; wherein x, y and z represent the average number of moles of the corresponding units per mole of said ester.

Claim 9

Dependent Claim 106 words

A granular detergent composition according to claim 7 wherein, the oligomeric or polymeric composition comprises from about 25% to about 100% by weight of ester having the empirical formula (CAP) x (EG/PG) y (T) z ; wherein (CAP) represents the sodium salt form of said sulfobenzoyl end-capping units i); (EG/PG) represents said oxyethyleneoxy and oxy-1,2-propyleneoxy units ii); (T) represents said terephthaloyl units iii); x is from about 1 to 2; y is from about 2.25 to about 7; z is from about 1.25 to about 6; wherein x, y and z represent the average number of moles of the corresponding units per mole of said ester.

Claim 10

Dependent Claim 79 words

A granular detergent composition according to claim 8 comprising from about 20% to about 60% of the detergent builder and from about 15% to about 50% of an anionic surfactant selected from the group consisting of C 11 -C 13 linear alkylbenzene sulfonates, C 10 -C 18 alkyl sulfates, and C 10 -C 18 alkyl sulfates ethoxylated with an average of from about 1 to about 6 moles of ethylene oxide per mole of alkyl sulfate, and mixtures thereof.

Claim 11

Dependent Claim 25 words

A granular detergent composition according to claim 9 wherein the detergent builder is a tripolyphosphate, pyrophosphate, carbonate, polycarboxylate, or aluminosilicate detergency builder, or mixtures thereof.

Claim 12

Dependent Claim 23 words

A granular detergent composition according to claim 1 which is formulated to provide a solution pH of from about 8 to about 10.

Claim 13

Independent Claim 172 words

A method of laundering fabrics and concurrently providing a soil release finish thereto, comprising contacting said fabrics with an aqueous laundry liquor containing conventional detersive ingredients and providing to the laundering liquor from about 1 to about 50 ppm of a soil release agent in substantially amorphous form which is an oligomeric or polymeric composition comprising a substantially linear, sulfobenzoyl end-capped ester; said ester comprising, per mole of said ester: i) from about 1 to about 2 moles of sulfobenzoyl endcapping units of the formula (MO 3 S)(C 6 H 4 )C(O)-- wherein M is sodium; ii) from about 2 to about 10 moles of oxyethyleneoxy units and oxy-1,2-propyleneoxy units in a mole ratio of oxyethyleneoxy units to oxy-1,2-propyleneoxy units of from about 2.5:1 to about 15:1; and iii) from about 1 to about 9 moles of terephthaloyl units; wherein the mole ratio of said oxyalkyleneoxy units to said terephthaloyl units is from about 2:1 to about 1.1:1 and wherein said ester is at least about 90% by weight amorphous in form.

Claim 14

Independent Claim 172 words

A method of laundering fabrics and concurrently providing a soil release finish thereto, comprising contacting said fabrics with an aqueous laundry liquor containing conventional detersive ingredients and providing to the laundering liquor from about 1 to about 50 ppm of a soil release agent in substantially amorphous form which is an oligomeric or polymeric composition comprising a substantially linear, sulfobenzoyl end-capped ester; said ester comprising, per mole of said ester: i) from about 1 to about 2 moles of sulfobenzoyl endcapping units of the formula (MO 3 S)(C 6 H 4 )C(O)-- wherein M is sodium; ii) from about 2 to about 10 moles of oxyethyleneoxy units and oxy-1,2-propyleneoxy units in a mole ratio of oxyethyleneoxy units to oxy-1,2-propyleneoxy units of from about 2.5:1 to about 15:1; and iii) from about 1 to about 9 moles of terephthaloyl units; wherein the mole ratio of said oxyalkyleneoxy units to said terephthaloyl units is from about 2:1 to about 1.1:1 and wherein said ester is at least about 90% by weight amorphous in form.

Claim 15

Dependent Claim 60 words

A method according to claim 12, wherein said conventional detersive ingredients comprise one or more conventional anionic surfactants; said soil release agent is present at a level of from about 5 to about 30 ppm in said aqueous laundry liquor; and said aqueous laundry liquor is further characterized in that it has a pH from about 7 to about 11.

Claim 16

Dependent Claim 71 words

A method according to claim 13, wherein said fabrics are subjected to two or more cycles comprising the ordered sequence of a) contacting said fabrics with said aqueous laundry liquor in a conventional automatic washing-machine for periods ranging from about 5 minutes to about 1 hour; b) rinsing said fabrics with water; c) line- or tumble-drying said fabrics; and d) exposing said fabrics to soiling through normal wear or domestic use.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-10-25	1997-04-26	1997-10-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-10-25	2001-04-26	2001-10-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-10-25	2005-04-26	2005-10-26	$7700.00	Window Closed / Lapsed

Sulfobenzoyl end-capped ester oligomers useful as soil release agents in granular detergent compositions

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