US4889653A — Thixotropic aqueous liquid automatic dishwashing …

Claim 1

Independent Claim 92 words

An anti-filming and anti-spotting gel-like thixotropic aqueous liquid automatic dishwashing detergent composition comprising water, at least one ingredient selected from the group consisting of organic detergent, bleach, detergent builder, sequestering agent, foam inhibitors, and mixtures thereof, a nonabrasive amount of from about 0.5 to 5% of a silica anti-filming agent having a particle size of about 0.1 to 10 microns and about 2 to 14% of a polyacrylic acid polymer or salt anti-spotting agent, and a sufficient amount of a thixotropic thickener to provide a thixotropic index of about 2.5 to 10.

Claim 2

Dependent Claim 92 words

An anti-filming and anti-spotting gel-like thixotropic aqueous liquid automatic dishwashing detergent composition comprising water, at least one ingredient selected from the group consisting of organic detergent, bleach, detergent builder, sequestering agent, foam inhibitors, and mixtures thereof, a nonabrasive amount of from about 0.5 to 5% of a silica anti-filming agent having a particle size of about 0.1 to 10 microns and about 2 to 14% of a polyacrylic acid polymer or salt anti-spotting agent, and a sufficient amount of a thixotropic thickener to provide a thixotropic index of about 2.5 to 10.

Claim 3

Dependent Claim 36 words

The composition of claim 1 wherein the silica anti-filming is in an amount of about 1 to 4% and the polyacrylic acid polymer or salt anti-spotting agent is in an amount of about 3 to 12%.

Claim 4

Dependent Claim 139 words

An anti-filming and anti-spotting thixotropic aqueous liquid automatic dishwasher composition comprising approximately by weight: (a) 5 to 35% detergent builder; (b) 2.5 to 40% sodium silicate; (c) a nonabrasive amount of 0.5 to 5% of silica anti-filming agent having a particle size of about 0.1 to 10 microns; (d) 2 to 14% polyacrylic acid polymer or salt anti-spotting agent having a molecular weight of 1000 to 100,000; (e) 0 to 9% alkali metal carbonate; (f) 0.1 to 5% chlorine bleach stable, water-dispersible organic detergent active material; (g) 0 to 5% chlorine bleach stable foam depressant; (h) chlorine bleach compound in an amount to provide about 0.2 to 4% of available chlorine; (i) a sufficient amount of a thixotropic thickener to provide a thixotropic index of about 2.5 to 10; (j) 0 to 8% of sodium hydroxide; (k) balance water.

Claim 5

Dependent Claim 139 words

An anti-filming and anti-spotting thixotropic aqueous liquid automatic dishwasher composition comprising approximately by weight: (a) 5 to 35% detergent builder; (b) 2.5 to 40% sodium silicate; (c) a nonabrasive amount of 0.5 to 5% of silica anti-filming agent having a particle size of about 0.1 to 10 microns; (d) 2 to 14% polyacrylic acid polymer or salt anti-spotting agent having a molecular weight of 1000 to 100,000; (e) 0 to 9% alkali metal carbonate; (f) 0.1 to 5% chlorine bleach stable, water-dispersible organic detergent active material; (g) 0 to 5% chlorine bleach stable foam depressant; (h) chlorine bleach compound in an amount to provide about 0.2 to 4% of available chlorine; (i) a sufficient amount of a thixotropic thickener to provide a thixotropic index of about 2.5 to 10; (j) 0 to 8% of sodium hydroxide; (k) balance water.

Claim 6

Dependent Claim 64 words

The composition of claim 3 wherein the polyacrylic acid polymer or salt anti-spotting agent has the formula ##STR4## wherein R 1 , R 2 and R 3 can be the same or different and can be hydrogen, C 1 -C 4 lower alkyl, M represents hydrogen, or an alkali metal, n=5 to 1000 and the polymer has a molecular weight of 1000 to 100,000.

Claim 7

Dependent Claim 23 words

The composition of claim 3 wherein the thixotropic thickener comprises a long chain fatty acid in an amount of about 0.03 to 0.5%.

Claim 8

Dependent Claim 28 words

The composition of claim 3 wherein the thixotropic thickener comprises a polyvalent metal salt of a long chain fatty acid in an amount of about 0.02 to 1.0%.

Claim 9

Dependent Claim 19 words

The composition of claim 5 additionally comprising a clay thixotropic thickener in an amount of about 0.1 to 3.0%.

Claim 10

Dependent Claim 19 words

The composition of claim 6 additionally comprising a clay thixotropic thickener in an amount of about 0.1 to 3.0%.

Claim 11

Dependent Claim 20 words

The composition of claim 3 wherein the silica anti-filming agent has a particle size of about 0.5 to 8.0 microns.

Claim 12

Dependent Claim 132 words

An anti-filming and anti-spotting thixotropic aqueous liquid automatic dishwasher composition comprising approximately by weight: (a) 5 to 35% alkali metal tripolyphosphate; (b) 2.5 to 40% sodium silicate; (c) a nonabrasive amount of 1 to 4% silica anti-filming agent having a particle size of about 0.5 to 8.0 microns; (d) 3 to 12% polyacrylic acid polymer or salt anti-spotting agent; (e) 0 to 9% alkali metal carbonate; (f) 0.1 to 5% chlorine bleach stable, water dispersible organic detergent active material; (g) 0 to 5% chlorine bleach stable foam depressant; (h) chlorine bleach compound in an amount to provide about 0.2 to 4% of available chlorine; (i) a sufficient amount of a thixotropic thickener to provide a thixotropic index of about 2.5 to 10; (j) 0 to 8% of sodium hydroxide; (k) balance water.

Claim 13

Dependent Claim 132 words

An anti-filming and anti-spotting thixotropic aqueous liquid automatic dishwasher composition comprising approximately by weight: (a) 5 to 35% alkali metal tripolyphosphate; (b) 2.5 to 40% sodium silicate; (c) a nonabrasive amount of 1 to 4% silica anti-filming agent having a particle size of about 0.5 to 8.0 microns; (d) 3 to 12% polyacrylic acid polymer or salt anti-spotting agent; (e) 0 to 9% alkali metal carbonate; (f) 0.1 to 5% chlorine bleach stable, water dispersible organic detergent active material; (g) 0 to 5% chlorine bleach stable foam depressant; (h) chlorine bleach compound in an amount to provide about 0.2 to 4% of available chlorine; (i) a sufficient amount of a thixotropic thickener to provide a thixotropic index of about 2.5 to 10; (j) 0 to 8% of sodium hydroxide; (k) balance water.

Claim 14

Dependent Claim 53 words

The composition of claim 10 wherein the polyacrylic acid polymer or salt anti-spotting agent has the formula ##STR5## wherein R 1 and R 3 are hydrogen, and R 2 is hydrogen or methyl, M represents hydrogen, sodium or potassium, n=10 to 500 and the polymer has a molecular weight of 1500 to 50,000.

Claim 15

Dependent Claim 19 words

The composition of claim 10 wherein the polyacrylic acid polymer or salt has a molecular weight of about 2000.

Claim 16

Dependent Claim 19 words

The composition of claim 10 wherein the polyacrylic acid polymer or salt has a molecular weight of about 4500.

Claim 17

Dependent Claim 22 words

The composition of claim 10 wherein the silica anti-filming agent contains about 0.1 to 5% of alumina, based on weight of silica.

Claim 18

Dependent Claim 18 words

The composition of claim 10 wherein the silica has a particle size of about 1 to 5 microns.

Claim 19

Dependent Claim 31 words

The composition of claim 10 wherein the thixotropic thickener comprises a long chain fatty acid having C 16 to C 20 carbon atoms in an amount of about 0.03 to 0.20%.

Claim 20

Dependent Claim 36 words

The composition of claim 10 wherein the thixotropic thickener comprises a polyvalent metal salt of a long chain fatty acid having C 16 to C 20 carbon atoms in an amount of about 0.06 to 0.8%.

Claim 21

Dependent Claim 17 words

The composition of claim 17 wherein the polyvalent metal is one of aluminum, calcium, zinc and magnesium.

Claim 22

Dependent Claim 19 words

The composition of claim 16 additionally comprising a clay thixotropic thickener in an amount of about 0.1 to 2.5%.

Claim 23

Dependent Claim 19 words

The composition of claim 17 additionally comprising a clay thixotropic thickener in an amount of about 0.1 to 2.5%.

Claim 24

Dependent Claim 47 words

A method for cleaning soiled glassware and dishware which comprises contacting the soiled dishware in an automatic dishwashing machine in an aqueous washbath having dispersed therein an effective amount of the composition of claim 3 to obtain clean glassware and dishware of substantially reduced film and spots.

Claim 25

Dependent Claim 47 words

A method for cleaning soiled dishware which comprises contacting the soiled glassware and dishware in an automatic dishwashing machine in an aqueous washbath having dispersed therein an effective amount of the composition of claim 10 to obtain clean glassware and dishware of substantially reduced film and spots.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-12-25	1993-06-26	1993-12-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-12-25	1997-06-26	1997-12-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-12-25	2001-06-26	2001-12-26	$7700.00	Window Closed / Lapsed

Thixotropic aqueous liquid automatic dishwashing detergent composition containing anti-spotting and anti-filming agents

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