US4256601A — Degreasing composition for treating metal surface

Claim 1

Independent Claim 154 words

A degreasing composition useful for treating a metal surface, comprising (1) a compound of the formula: ##STR5## wherein X is hydrogen or hydroxy, R 1 and R 2 are the same or different and each is hydrogen or methyl, AO is an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide, at least 50 mol % of the total AO groups being ethylene oxide, and n is 3 to 20, which is dissolved in water, the amount of said compound of formula I being 0.001 to 5% by weight based on the total weight of the composition, and (2) a defoaming agent selected from the group consisting of a water-soluble nonionic surfactant having a cloud point of not more than 40° C. and a water-insoluble nonionic surfactant in an amount of 0.05 to 5 parts by weight per one part by weight of said compound of formula I.

Claim 2

Dependent Claim 154 words

A degreasing composition useful for treating a metal surface, comprising (1) a compound of the formula: ##STR5## wherein X is hydrogen or hydroxy, R 1 and R 2 are the same or different and each is hydrogen or methyl, AO is an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide, at least 50 mol % of the total AO groups being ethylene oxide, and n is 3 to 20, which is dissolved in water, the amount of said compound of formula I being 0.001 to 5% by weight based on the total weight of the composition, and (2) a defoaming agent selected from the group consisting of a water-soluble nonionic surfactant having a cloud point of not more than 40° C. and a water-insoluble nonionic surfactant in an amount of 0.05 to 5 parts by weight per one part by weight of said compound of formula I.

Claim 3

Dependent Claim 12 words

A composition according to claim 1, wherein n is 5 to 15.

Claim 4

Dependent Claim 20 words

A composition according to claim 1, wherein said compound of formula I has an HLB value of 8 to 15.

Claim 5

Dependent Claim 16 words

A composition according to claim 1, wherein all of the AO groups are ethylene oxide groups.

Claim 6

Dependent Claim 14 words

A composition according to claim 1, wherein said compound of formula I is: ##STR6##

Claim 7

Dependent Claim 14 words

A composition according to claim 1, wherein said compound of formula I is: ##STR7##

Claim 8

Dependent Claim 14 words

A composition according to claim 1, wherein said compound of formula I is: ##STR8##

Claim 9

Dependent Claim 29 words

A composition according to claim 1, wherein the amount of said compound of formula I is 0.05 to 5% by weight based on the total weight of the composition.

Claim 10

Dependent Claim 155 words

A composition according to claim 1, wherein the defoaming agent is a member selected from the group consisting of an alcohol having 10 to 20 carbon atoms, an ether of an alcohol having 10 to 20 carbon atoms with an alcohol having 1 to 4 carbon atoms, an alkali metal salt of a fatty acid having 10 to 20 carbon atoms, an ester of a fatty acid having 10 to 20 carbon atoms with an alcohol having 1 to 4 carbon atoms, a fatty acid ethylene oxide adduct wherein the fatty acid has 10 to 20 carbon atoms and the ethylene oxide addition molar number is not more than 10, an alcohol alkylate having an HLB value of not more than 10, an alkylphenol alkylate having an HLB value of not more than 10, a polypropylene glycol-polyethylene glycol ether having an ethylene oxide content of not more than 20% by weight, and a mixture thereof.

Claim 11

Dependent Claim 29 words

A composition according to claim 1, wherein the amount of said compound of formula I is 0.001 to 1% by weight based on the total weight of the composition.

Claim 12

Dependent Claim 155 words

A composition according to claim 1, wherein the defoaming agent is a member selected from the group consisting of an alcohol having 10 to 20 carbon atoms, an ether of an alcohol having 10 to 20 carbon atoms with an alcohol having 1 to 4 carbon atoms, an alkali metal salt of a fatty acid having 10 to 20 carbon atoms, an ester of a fatty acid having 10 to 20 carbon atoms with an alcohol having 1 to 4 carbon atoms, a fatty acid ethylene oxide adduct wherein the fatty acid has 10 to 20 carbon atoms and the ethylene oxide addition molar number is not more than 10, an alcohol alkylate having an HLB value of not more than 10, an alkylphenol alkylate having an HLB value of not more than 10, a polypropylene glycol-polyethylene glycol ether having an ethylene oxide content of not more than 20% by weight, and a mixture thereof.

Claim 13

Dependent Claim 79 words

A composition according to claim 2, 3, 4, 5, 6, 7, 1, 10 or 11, wherein the composition further comprises a builder selected from the group consisting of phosphoric acid, sulfuric acid, nitric acid, citric acid, lactic acid, tartaric acid, an alkali metal hydroxide, an alkali metal carbonate, an alkali metal bicarbonate, an alkali metal silicate, an alkali metal phosphate and an alkali metal polyphosphate in an amount which is effective to improve the degreasing activity of the composition.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-03-16	1984-09-15	1985-03-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-03-16	1988-09-15	1989-03-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-03-16	1992-09-15	1993-03-17	$7700.00	Window Closed / Lapsed

Degreasing composition for treating metal surface

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