US4743394A — Concentrated non-phosphate detergent paste compos…

Claim 1

Independent Claim 124 words

A phase stable concentrated non-phosphate paste detergent composition which is rapidly soluble in cold water comprising, by weight: (a) about 10-50% of at least one nonionic surfactant having a pour point less than about 65° F.; (b) about 5-70% of at least one water insoluble zeolite builder; (c) about 0-70% of at least one water soluble non-phosphate builder; and (d) less than about 10% added water as the only phase stabilizer; wherein the ratio of (b+c): a is greater than or equal to about 1.0; and wherein the ratio of b:a is less than about 2.0 said paste having a dissolution/dispersion rate in water at about 70° F. such that the paste dissolves within about 12 minutes or less with gentle or regular agitation.

Claim 2

Dependent Claim 124 words

A phase stable concentrated non-phosphate paste detergent composition which is rapidly soluble in cold water comprising, by weight: (a) about 10-50% of at least one nonionic surfactant having a pour point less than about 65° F.; (b) about 5-70% of at least one water insoluble zeolite builder; (c) about 0-70% of at least one water soluble non-phosphate builder; and (d) less than about 10% added water as the only phase stabilizer; wherein the ratio of (b+c): a is greater than or equal to about 1.0; and wherein the ratio of b:a is less than about 2.0 said paste having a dissolution/dispersion rate in water at about 70° F. such that the paste dissolves within about 12 minutes or less with gentle or regular agitation.

Claim 3

Dependent Claim 167 words

The paste detergent as in claim 1 wherein said surfactant is selected from the group consisting of: linear and branched, primary and secondary ethoxylated alcohols with an average chain length of 6 to 16 carbon atoms and averaging about 2 to 10 moles of ethylene oxide per mole of alcohol; linear and branched, primary and secondary ethoxylated, propoxylated alcohols with an average chain length of about 6 to 16 carbon atoms and averaging about 1 to 10 moles of ethylene oxide and about 1 to 10 moles of propylene oxide per mole of alcohol; linear and branched alkylphenoxy (polyethoxy) alcohols with an average chain length of 8 to 16 carbon atoms and averaging 1.5 to 30 moles of ethylene oxide per mole of alcohol; ethoxylated, propoxylated linear and branched alkylphenols, with an average chain length of 8 to 16 carbon atoms, and averaging about 1 to 10 moles of ethylene oxide and about 1 to 10 moles of propylene oxide per mole of alcohol; and mixtures thereof.

Claim 4

Dependent Claim 60 words

The paste detergent of claim 1 wherein said water soluble builder is selected from the group consisting of: carbonates, borates, silicates, and the alkali metal and ammonium salts of any of the foregoing; polycarboxylates, polyhydroxy sulfonates, citrates, succinates, oxydisuccinates, polyacrylic acid, nitrilotriacetic acid, ethylenediaminetetraacetic acid, and the alkali metal and ammonium salts of any of the foregoing; and mixtures thereof.

Claim 5

Dependent Claim 46 words

The paste detergent of claim 1 further comprising (d) at least one adjunct selected from the following: a further surfactant which is a nonionic, anionic, cationic or amphoteric surfactant; phase stabilizers; fluorescent whitening agents; anti-redeposition agents; anti-corrosion agents; bleaches; dyes; pigments; fabric softeners; enzymes; and fragrances.

Claim 6

Dependent Claim 19 words

The paste of claim 4 wherein the fluorescent whitening agents include stilbene, styrylnaphthalene and styrene brighteners and their derivatives.

Claim 7

Dependent Claim 11 words

The paste of claim 4 wherein the pigment is ultramarine blue.

Claim 8

Dependent Claim 14 words

The paste of claim 4 wherein the enzymes include amylases, proteases and mixtures thereof.

Claim 9

Dependent Claim 18 words

The paste of claim 1 wherein the pour point of the surfactants is less than about 65° F.

Claim 10

Dependent Claim 18 words

The paste of claim 1 wherein the pour point of the surfactant is less than about 60° F.

Claim 11

Dependent Claim 18 words

The paste of claim 1 wherein the pour point of the surfactant is less than about 50° F.

Claim 12

Dependent Claim 18 words

The paste of claim 1 wherein the pour point of the surfactant is less than about 40° F.

Claim 13

Dependent Claim 92 words

The paste of claim 2 wherein the surfactant is a linear ethoxylated, propoxylated alcohol with an average chain length of about 6 to 16 carbon atoms and averaging about 1 to 10 moles of ethylene oxide and about 1 to 10 moles of propylene oxide per mole of alcohol; a linear ethoxylated, propoxylated alkylphenol with an average chain lenghth of 8 to 16 carbon atoms, and averaging about 1 to 10 moles of ethylene oxide and about 1 to 10 moles of propylene oxide per mole of alcohol; or a mixture thereof.

Claim 14

Dependent Claim 40 words

The paste of claim 14 wherein the surfactant is an ethoxylated, propoxylated alcohol with an average chain length of about 9-15 carbon atoms and averaging 5-10 moles of ethylene oxide and 0.5-3.0 moles of propylene oxide per mole of alcohol.

Claim 15

Dependent Claim 40 words

The paste of claim 13 further comprising another nonionic surfactant which is a linear ethoxylated alcohol with an average chain length of 12 to 13 carbon atoms and averaging 5 to 7 moles of ethylene oxide per mole of alcohol.

Claim 16

Dependent Claim 27 words

The paste of claim 1 wherein the surfactant comprises at least two nonionic surfactants, one of which has a pour point of less than about 40° F.

Claim 17

Dependent Claim 17 words

The paste of claim 2 wherein the ratio of b:a is less than or equal to 1.5.

Claim 18

Dependent Claim 30 words

A paste detergent as in claim 1 packaged in a water soluble film prepared from at least one film forming polymer of a size to make convenient unit dosage packets.

Claim 19

Dependent Claim 25 words

The paste detergent of claim 17 wherein the film is made from a plasticized polyvinyl alcohol with a molecular weight of about 10,000 to 100,000.

Claim 20

Dependent Claim 42 words

The paste detergent of claim 17 in which the paste detergent contains at least one film plasticizer in an amount of no more than about 30% by weight of the surfactant of (a), said plasticizer being present to enhance the film integrity.

Claim 21

Dependent Claim 38 words

The paste detergent of claim 17 wherein the water soluble builders of (c) include at least one builder with an active alkalinity of more than about 20%, said builder comprising less than 25% by weight of the paste.

Claim 22

Dependent Claim 19 words

A method for laundering fabrics comprising contacting in aqueous media, the fabrics with the paste detergent of claim 1.

Claim 23

Dependent Claim 167 words

A unit dosage detergent delivery means for low temperature laundering comprising: (a) a concentraed non-phosphate paste detergent, which is rapidly soluble in cold water and which comprises, by weight: (i) about 15-45% of at least one nonionic surfactant; (ii) about 15-60% of at least one water insoluble zeolite builder; (iii) about 15-60% of at least one water soluble non-phosphate builder; wherein the ratio of (ii+iii): i is greater than or equal to about 1.0; wherein the ratio of ii:i is less than about 2.0; and wherein the amount of iii which includes a builder whose active alkalinity is greater than 20% does not exceed about 25% of the total weight of the detergent; and (b) A water sosluble film packet prepared from at least one film-forming polymer encasing (a), said film packet tending to become insoluble in high alkalinity; said paste having a dissolution/dispersion rate in water at about 70° F. such that the paste dissolves/disperses within about 12 minutes or less with gentle or regular agitation.

Claim 24

Dependent Claim 167 words

A unit dosage detergent delivery means for low temperature laundering comprising: (a) a concentraed non-phosphate paste detergent, which is rapidly soluble in cold water and which comprises, by weight: (i) about 15-45% of at least one nonionic surfactant; (ii) about 15-60% of at least one water insoluble zeolite builder; (iii) about 15-60% of at least one water soluble non-phosphate builder; wherein the ratio of (ii+iii): i is greater than or equal to about 1.0; wherein the ratio of ii:i is less than about 2.0; and wherein the amount of iii which includes a builder whose active alkalinity is greater than 20% does not exceed about 25% of the total weight of the detergent; and (b) A water sosluble film packet prepared from at least one film-forming polymer encasing (a), said film packet tending to become insoluble in high alkalinity; said paste having a dissolution/dispersion rate in water at about 70° F. such that the paste dissolves/disperses within about 12 minutes or less with gentle or regular agitation.

Claim 25

Dependent Claim 36 words

The delivery means of claim 22 wherein the paste detergent of (a) further contains (iv) at least one film plasticizer in an amount of no more than about 30% by weight of the surfactant of (i).

Claim 26

Dependent Claim 38 words

The delivery means of claim 22 wherein the water soluble builder is a mixture of (A) at least one alkaline builder, which has active alkalinity of more than about 20%, and (B) at least one less alkaline builder.

Claim 27

Dependent Claim 20 words

The delivery means of claim 24 wherein (A) is an alkali metal silicate and (B) is an alkali metal citrate.

Claim 28

Dependent Claim 22 words

The delivery means of claim 24 wherein (A) is an alkali metal silicate and (B) is the sodium salt of nitrilotriacetic acid.

Claim 29

Dependent Claim 20 words

The delivery means of claim 24 wherein (A) is an alkali metal silicate and (B) is an alkali metal sesquicarbonate.

Claim 30

Independent Claim 145 words

A method of cleaning fabrics in cold water comprising: contacting said fabrics in said cold water with a substantially nonaqueous, phase stable concentrated paste detergent composition which is rapidly soluble in said cold water, wherein said composition comprises, by weight: (a) about 10-50% of at least one nonionic surfactant; (b) about 5-70% of at least one water insoluble zeolite builder; (c) about 0-70% of at least one water soluble non-phosphate builder; and (d) less than about 10% added water as the only phase stabilizer; wherein the ratio of (b+c): a is greater than or equal to about 1.0; and wherein the ratio of b:a is less than about 2.0; said paste having a dissolution/dispersion rate in water at about 70° F. such that the paste dissolves/disperses within about 12 minutes or less with gentle or regular agitation; and removing said paste composition from said fabrics.

Claim 31

Independent Claim 145 words

A method of cleaning fabrics in cold water comprising: contacting said fabrics in said cold water with a substantially nonaqueous, phase stable concentrated paste detergent composition which is rapidly soluble in said cold water, wherein said composition comprises, by weight: (a) about 10-50% of at least one nonionic surfactant; (b) about 5-70% of at least one water insoluble zeolite builder; (c) about 0-70% of at least one water soluble non-phosphate builder; and (d) less than about 10% added water as the only phase stabilizer; wherein the ratio of (b+c): a is greater than or equal to about 1.0; and wherein the ratio of b:a is less than about 2.0; said paste having a dissolution/dispersion rate in water at about 70° F. such that the paste dissolves/disperses within about 12 minutes or less with gentle or regular agitation; and removing said paste composition from said fabrics.

Claim 32

Dependent Claim 208 words

A unit dosage delivery means for low temperature laundering comprising: (a) a water soluble film packet, said film prepared from at least one film forming polymer, said packet tending to become insoluble in high alkalinity, said packet enclosing a premeasured, single wash load amount of (b) a concentrated non-phosphate detergent, which is rapidly soluble in cold water, said detergent comprising, by weight: (i) about 15-45% of at least one nonionic surfactant which is derived from linear or branched alcohols with an average chain length of 6-16 carbon atoms and which is alkoxylated with an average of 1-10 moles of ethylene oxide and 1-10 moles of propylene oxide per mole of alcohol; (ii) about 15-60% of at least one water insoluble zeolite builder; (iii) about 15-60% of at least one water soluble non-phosphate builder, at least a portion of which has an active alkalinity greater than about 20%; wherein the ratio of (ii+iii): i is greater than or equal to about 1.0; wherein the ratio of ii:i is less than about 2.0; and wherein the amount of said alkaline builder with active alkalinity greater than about 20% of iii does to exceed about 25% of the total weight of the detergent in order to maintain solubility of said packet.

Claim 33

Dependent Claim 208 words

A unit dosage delivery means for low temperature laundering comprising: (a) a water soluble film packet, said film prepared from at least one film forming polymer, said packet tending to become insoluble in high alkalinity, said packet enclosing a premeasured, single wash load amount of (b) a concentrated non-phosphate detergent, which is rapidly soluble in cold water, said detergent comprising, by weight: (i) about 15-45% of at least one nonionic surfactant which is derived from linear or branched alcohols with an average chain length of 6-16 carbon atoms and which is alkoxylated with an average of 1-10 moles of ethylene oxide and 1-10 moles of propylene oxide per mole of alcohol; (ii) about 15-60% of at least one water insoluble zeolite builder; (iii) about 15-60% of at least one water soluble non-phosphate builder, at least a portion of which has an active alkalinity greater than about 20%; wherein the ratio of (ii+iii): i is greater than or equal to about 1.0; wherein the ratio of ii:i is less than about 2.0; and wherein the amount of said alkaline builder with active alkalinity greater than about 20% of iii does to exceed about 25% of the total weight of the detergent in order to maintain solubility of said packet.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-05-10	1991-11-09	1992-05-10	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-05-10	1995-11-09	1996-05-10	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-05-10	1999-11-09	2000-05-10	$7700.00	Window Closed / Lapsed

Concentrated non-phosphate detergent paste compositions

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