US4072622A — Stable aqueous suspension of water-insoluble, cal…

Claim 1

Independent Claim 201 words

An aqueous suspension having a pH of between 7 and 12 of water-insoluble, calcium-binding aluminosilicates with an improved stability against settling consisting essentially of (A) from 20% to 50% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and a primary particle size of from 0.1μ to 100μ and having the formula, combined water not shown (M.sub.2 O).sub.x . Me.sub.2 O.sub.3 (SiO.sub.2).sub.y where M is a member selected from the group consisting of sodium and potassium, x is a number of from 0.7 to 1.5, Me is aluminum or boron, and y is a number from 0.8 to 6, and (B) from 0.5% to 6% by weight of at least one organic dispersing agent selected from the group consisting of the free acids and alkali-metal salts of 1. an organic phosphonic acid having at least one further acid group selected from the group consisting of phosphonic acid and carboxyl, and 2. an alkyl acid phosphate emulsifier having from 4 to 10 carbon atoms in the alkyl, in water, said aqueous suspension being capable of being pumped after 24 hours of standing.

Claim 2

Dependent Claim 201 words

An aqueous suspension having a pH of between 7 and 12 of water-insoluble, calcium-binding aluminosilicates with an improved stability against settling consisting essentially of (A) from 20% to 50% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium-binding power of at least 50 mg CaO/gm of anhydrous active substance and a primary particle size of from 0.1μ to 100μ and having the formula, combined water not shown (M.sub.2 O).sub.x . Me.sub.2 O.sub.3 (SiO.sub.2).sub.y where M is a member selected from the group consisting of sodium and potassium, x is a number of from 0.7 to 1.5, Me is aluminum or boron, and y is a number from 0.8 to 6, and (B) from 0.5% to 6% by weight of at least one organic dispersing agent selected from the group consisting of the free acids and alkali-metal salts of 1. an organic phosphonic acid having at least one further acid group selected from the group consisting of phosphonic acid and carboxyl, and 2. an alkyl acid phosphate emulsifier having from 4 to 10 carbon atoms in the alkyl, in water, said aqueous suspension being capable of being pumped after 24 hours of standing.

Claim 3

Dependent Claim 36 words

The aqueous suspension of claim 1 wherein said crystalline silicate compound has the following interference lines in the x-ray diffraction diagrams as d-values in A obtained with Ca-K.sub.α radiation: 4.1; 3.68; 3.38; 3.26; 2.96; 2.73; 2.60.

Claim 4

Dependent Claim 56 words

The aqueous suspension of claim 1 wherein said crystalline silicate compound as the following interference lines in the x-ray diffraction diagrams as d-values in A obtained with Ca-K.sub.α radiation: 4.4; 3.8; 2.88; 2.79; 2.66. 4. The aqueous suspension of claim 1 wherein said silicate compound has a calcium-binding power of from 100 mg to 200 mg

Claim 5

Dependent Claim 26 words

CaO/gm of anhydrous active substance. 5. The aqueous suspension of claim 1 wherein said silicate compound is present in an amount of from 20% to 42%

Claim 6

Dependent Claim 27 words

by weight on the anhydrous basis. 6. The aqueous suspension of claim 1 wherein said silicate compound is present in an amount of from 30% to 38%

Claim 7

Dependent Claim 56 words

by weight on the anhydrous basis. 7. The aqueous suspension of claim 1 wherein said component B is an organic phosphonic acid having at least one further acid group selected from the group consisting of lower alkane polyphosphonic acids, amino-lower alkane polyphosphonic acids, hydroxy-lower alkane polyphosphonic acids, phosphono-lower alkane carboxylic acids, amino substituted phosphono-lower alkane carboxylic

Claim 8

Dependent Claim 35 words

acids and hydroxy substituted phosphono-lower alkane carboxylic acids. 8. The aqueous suspension of claim 1 wherein said component B is an alkyl acid phosphate emulsifier having from 4 to 10 carbon atoms in the alkyl.

Claim 9

Dependent Claim 189 words

An aqueous suspension having a pH of between 7 and 12 of water-insoluble, calcium binding aluminosilicates with improved stability against settling consisting essentially of (A) from 20% to 42% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium binding power of from 100 to 200 mg CaO/gm when measured as described on pages 30 to 31 of the specification and a primary particle size of from 0.1μ to 30μ and having the formula, combined water not shown (M.sub.2 O).sub.x . Al.sub.2 O.sub.3 . (SiO.sub.2).sub.y where M is a member selected from the group consisting of sodium and potassium, x is a number from 0.7 to 1.5 and y is a number from 0.8 to 6, and (B) from 0.5% to 6% of an organic phosphonic acid having at least one further acid group selected from the group consisting of lower alkane polyphosphonic acids, amino-lower alkane polyphosphonic acids, hydroxy-lower alkane polyphosphonic acids, phosphono-lower alkane carboxylic acids, amino substituted phosphono-lower alkane carboxylic acids and hydroxy substituted phosphono-lower alkane carboxylic acids, in water, said aqueous suspension being capable of being pumped after 24

Claim 10

Dependent Claim 189 words

An aqueous suspension having a pH of between 7 and 12 of water-insoluble, calcium binding aluminosilicates with improved stability against settling consisting essentially of (A) from 20% to 42% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium binding power of from 100 to 200 mg CaO/gm when measured as described on pages 30 to 31 of the specification and a primary particle size of from 0.1μ to 30μ and having the formula, combined water not shown (M.sub.2 O).sub.x . Al.sub.2 O.sub.3 . (SiO.sub.2).sub.y where M is a member selected from the group consisting of sodium and potassium, x is a number from 0.7 to 1.5 and y is a number from 0.8 to 6, and (B) from 0.5% to 6% of an organic phosphonic acid having at least one further acid group selected from the group consisting of lower alkane polyphosphonic acids, amino-lower alkane polyphosphonic acids, hydroxy-lower alkane polyphosphonic acids, phosphono-lower alkane carboxylic acids, amino substituted phosphono-lower alkane carboxylic acids and hydroxy substituted phosphono-lower alkane carboxylic acids, in water, said aqueous suspension being capable of being pumped after 24

Claim 11

Dependent Claim 164 words

hours standing. 10. An aqueous suspensiion having a pH of between 7 and 12 of water-insoluble, calcium binding aluminosilicates with improved stability against settling consisting essentially of (A) from 20% to 42% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium binding power of from 100 to 200 mg CaO/gm when measured as described on pages 30 to 31 of the specification and a primary particle size of from 0.1μ to 30μ and having the formula, combined water not shown (M.sub.2 O).sub.x . Al.sub.2 O.sub.3 . (SiO.sub.2).sub.y where M is a member selected from the group consisting of sodium and potassium, x is a number of from 0.7 to 1.5 and y is a number from 0.8 to 6, and (B) from 0.5% to 6% of an alkyl acid phosphate emulsifier having from 4 to 10 carbon atoms in the alkyl, in water, said aqueous suspension being capable of being pumped after 24 hours standing.

Claim 12

Dependent Claim 164 words

hours standing. 10. An aqueous suspensiion having a pH of between 7 and 12 of water-insoluble, calcium binding aluminosilicates with improved stability against settling consisting essentially of (A) from 20% to 42% by weight on the anhydrous basis of at least one crystalline, finely-divided, water-insoluble silicate compound having a calcium binding power of from 100 to 200 mg CaO/gm when measured as described on pages 30 to 31 of the specification and a primary particle size of from 0.1μ to 30μ and having the formula, combined water not shown (M.sub.2 O).sub.x . Al.sub.2 O.sub.3 . (SiO.sub.2).sub.y where M is a member selected from the group consisting of sodium and potassium, x is a number of from 0.7 to 1.5 and y is a number from 0.8 to 6, and (B) from 0.5% to 6% of an alkyl acid phosphate emulsifier having from 4 to 10 carbon atoms in the alkyl, in water, said aqueous suspension being capable of being pumped after 24 hours standing.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1981-02-06	1981-08-08	1982-02-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1985-02-06	1985-08-08	1986-02-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1989-02-06	1989-08-08	1990-02-07	$7700.00	Window Closed / Lapsed

Stable aqueous suspension of water-insoluble, calcium-binding aluminosilicates and organic suspending agents

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag