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US4125673A
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Process and composition for rendering surfaces hydrophobic and oleophobic
Assignee: Wacker Chemie AG
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Filing: 1976-05-27
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Granted: 1978-11-14
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Expires: 1996-05-27
Abstract
Abstract A process for imparting hydrophobic and oleophobic properties to inorganic materials which comprises applying to the inorganic materials a composition containing (a) a solution or dispersion of a fluorine-containing organic polymer or a solution of a water soluble polymer of an unsaturated carboxylic acid and (b) a solution of an organosilicon compound having on the average 0.9 to 1.8 hydrocarbon radicals per silicon atom.
Inventors
- 👤 Michael Roth
- 👤 Herbert Gluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:40
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C04B41/4927; C04B41/495; C04B41/4961; C04B41/4972; C04B41/52; C09; C09K; C09K3/00; C09K3/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
322 words
A process for imparting hydrophobic and oleophobic properties to surfaces of bricks or tiles consisting of an inorganic material having open pores, which comprises applying to the surface component (a) which is selected from the class consisting of a fluorine-containing organic polymer and a water soluble polymer of an unsaturated carboxylic acid and a diluent, and component (b) which is a solution of an organosilicon compound having an average of from 0.9 to 1.8 hydrocarbon radicals per silicon atom and any unsatisfied silicon valences are satisfied by an oxygen atom, said organosilicon compound is selected from the group consisting of (i) monomeric hydrocarbon siliconates of the formula RSi(OR).sub.2 OM, and polymeric siliconates thereof having units of the formula ##STR3## (ii) organosilanes of the formula R.sup.1.sub.n Si(OR.sup.2).sub.4-n, and partial hydrolyzates thereof having not more than 10 silicon atoms per molecule, (iii) an organopolysiloxane containing more than 10 carbon atoms per molecule and consisting of units of the formula ##EQU1## (iv) a product obtained from the reaction of a silane having the formula R.sup.1.sub.n SiCl.sub.4-n and a glycol selected from the class consisting of ethylene glycol and diethylene glycol, in which M is an alkali metal, R is selected from the class consisting of an alkyl radical having up to 5 carbon atoms and a phenyl radical, R 1 is a hydrocarbon radical free of aliphatic unsatruation having up to 14 carbon atoms, R 2 is an alkyl radical having up to 5 carbon atoms which may be interrupted by ether oxygen, n represents 1, 2 or 3 and has an average of from 0.9 to 1.8, x, y and z represent 0, 1, 2 or 3, the sum of x+y+z is up to 3, with the average value of x being 0.9 to 1.8 and the average values of y and z is from 0.00 to 0.20 except that at least one y and z has an average value of at least 0.01.
Claim 2
Dependent Claim
322 words
A process for imparting hydrophobic and oleophobic properties to surfaces of bricks or tiles consisting of an inorganic material having open pores, which comprises applying to the surface component (a) which is selected from the class consisting of a fluorine-containing organic polymer and a water soluble polymer of an unsaturated carboxylic acid and a diluent, and component (b) which is a solution of an organosilicon compound having an average of from 0.9 to 1.8 hydrocarbon radicals per silicon atom and any unsatisfied silicon valences are satisfied by an oxygen atom, said organosilicon compound is selected from the group consisting of (i) monomeric hydrocarbon siliconates of the formula RSi(OR).sub.2 OM, and polymeric siliconates thereof having units of the formula ##STR3## (ii) organosilanes of the formula R.sup.1.sub.n Si(OR.sup.2).sub.4-n, and partial hydrolyzates thereof having not more than 10 silicon atoms per molecule, (iii) an organopolysiloxane containing more than 10 carbon atoms per molecule and consisting of units of the formula ##EQU1## (iv) a product obtained from the reaction of a silane having the formula R.sup.1.sub.n SiCl.sub.4-n and a glycol selected from the class consisting of ethylene glycol and diethylene glycol, in which M is an alkali metal, R is selected from the class consisting of an alkyl radical having up to 5 carbon atoms and a phenyl radical, R 1 is a hydrocarbon radical free of aliphatic unsatruation having up to 14 carbon atoms, R 2 is an alkyl radical having up to 5 carbon atoms which may be interrupted by ether oxygen, n represents 1, 2 or 3 and has an average of from 0.9 to 1.8, x, y and z represent 0, 1, 2 or 3, the sum of x+y+z is up to 3, with the average value of x being 0.9 to 1.8 and the average values of y and z is from 0.00 to 0.20 except that at least one y and z has an average value of at least 0.01.
Claim 3
Dependent Claim
20 words
Bricks or tiles consisting of an inorganic material having open pores treated in accordance with the process of claim 1.
Claim 4
Dependent Claim
15 words
The process of claim 1, wherein the fluorine-containing organic polymer contains fluorine and carbon atoms.
Claim 5
Dependent Claim
27 words
The process of claim 3, wherein the fluorine-containing organic polymer also contains groups selected from the class consisting of chlorine, hydrogen, oxygen, sulphur, phosphorus and nitrogen atoms.
Claim 6
Dependent Claim
72 words
The process of claim 1, wherein the fluorine-containing organic polymer is selected from the class consisting of polytetrafluoroethylene, polytrifluorochloroethylene, a copolymer of tetrafluoroethylene and hexafluoropropylene, a copolymer of trifluorochloroethylene and at least one olefinically unsaturated monomer, a fluorinated acrylic resin, a copolymer of n-butyl acrylate, N-methylol acrylamide and at least 35 percent by weight of a methacrylate of the formula ##STR4## in which m represents an integer of from 1 to 13.
Claim 7
Dependent Claim
17 words
The process of claim 1, wherein component (a) is an aqueous dispersion of the fluorine-containing organic polymer.
Claim 8
Dependent Claim
20 words
The process of claim 1, wherein the diluent of component (a) is an organic solvent for the fluorine-containing organic polymer.
Claim 9
Dependent Claim
19 words
The process of claim 1, wherein the diluent of component (a) is a dispersant for the fluorine-containing organic polymer.
Claim 10
Dependent Claim
39 words
The process of claim 1, wherein the water soluble polymer of a carboxylic acid is a polymer having at least one monomer selected from the class consisting of acrylic acid, methacrylic acid, itaconic acid, vinylacetic acid and fumaric acid.
Claim 11
Dependent Claim
21 words
The process of claim 1, wherein component (a) is an aqueous solution of the water soluble polymer of a carboxylic acid.
Claim 12
Dependent Claim
31 words
The process of claim 1, wherein component (a) is present in an amount of from 0.05 to 25 percent by weight, based on the weight of the polymer and the diluent.
Claim 13
Dependent Claim
40 words
The process of claim 1, wherein the organosilicon compound is an alkali metal hydrocarbon siliconate in which the hydrocarbon radical is selected from the class consisting of an alkyl radical having up to 5 carbon atoms and a phenyl radical.
Claim 14
Dependent Claim
68 words
The process of claim 12, wherein the alkali metal hydrocarbon siliconate is selected from the class consisting of a monomeric compound of the general formula RSi(OH).sub.2 OM and a polymeric compound having units of the general formula ##STR5## in which R is selected from the class consisting of an alkyl radical having up to 5 carbon atoms and a phenyl radical and M represents an alkali metal atom.
Claim 15
Dependent Claim
19 words
The process of claim 13, wherein M is selected from the class consisting of a sodium and potassium atom.
Claim 16
Dependent Claim
101 words
The process of claim 1, wherein the organosilicon compound is selected from the group consisting of an organosilicon of the general formula R.sup.1.sub.n Si(OR.sup.2).sub.4-n in which R 1 represents a hydrocarbon radical having up to 14 carbon atoms which is free of aliphatic unsaturation, R 2 is selected from the class consisting of an alkyl radical having up to 5 carbon atoms and alkyl radicals interrupted by an ether oxygen, n is 1, 2 or 3 and has an average value of from 0.9 to 1.8 and a partial hydrolysate of said organosilane having up to 10 silicon atoms per molecule.
Claim 17
Dependent Claim
63 words
The process of claim 1, wherein the organosilicon compound is the reaction product of a silane of the general formula R.sup.1.sub.n SiCl.sub.4-n in which R 1 represents a hydrocarbon radical having up to 14 carbon atoms which is free of aliphatic unsaturation and n is 1, 2 or 3 and a glycol selected from the class consisting of ethylene glycol and diethylene glycol.
Claim 18
Dependent Claim
138 words
The process of claim 1, wherein the organosilicon compound is an organopolysiloxane having at least 10 silicon atoms per molecule and consisting of units of the general formula R.sup.1.sub.x Si(OR.sup.2).sub.y (OH).sub.z O.sub.(4-x-y-z)/2 in which R 1 represents a hydrocarbon radical having up to 14 carbon atoms which is free of aliphatic unsaturation, R 2 is selected from the class consisting of an alkyl radical having up to 5 carbon atoms and alkyl radicals interrupted by an ether oxygen, x, y and z are 0, 1, 2 or 3, the sum of x + y + z is up to 3, the average value of x is from 0.9 to 1.8, the average value of y and z is from 0.00 to 0.20 except that at least one y and z has an average value of at least 0.01.
Claim 19
Dependent Claim
32 words
The process of claim 12, wherein the organosilicon compound is dissolved in a diluent selected from the class consisting of water and a mixture of water and a water miscible organic solvent.
Claim 20
Dependent Claim
15 words
The process of claim 15, wherein the organosilicon compound is dissolved in an organic solvent.
Claim 21
Dependent Claim
39 words
The process of claim 1, wherein the organosilicon compound is present as a solution in component (b) in an amount of from 0.01 to 25 percent by weight, based on the weight of the organosilicon compound and the solvent.
Claim 22
Dependent Claim
23 words
The process of claim 1, wherein component (b) and component (a) are applied in a respective weight ratio of from 2:1 to 20:1.
Claim 23
Dependent Claim
24 words
The process of claim 1, wherein component (a) is applied to the surface in an amount of form 1 to 2000 g/m 2 .
Claim 24
Dependent Claim
24 words
The process of claim 1, wherein component (a) is applied to the surface in an amount of from 150 to 800 g/m 2 .
Claim 25
Dependent Claim
24 words
The process of claim 1, wherein component (b) is applied to the surface in an amount of from 1 to 2000 g/m 2 .
Claim 26
Dependent Claim
24 words
The process of claim 1, wherein component (b) is applied to the surface in an amount of from 150 to 800 g/m 2 .
Claim 27
Dependent Claim
14 words
The process of claim 1, wherein component (a) and component (b) are applied simultaneously.
Claim 28
Dependent Claim
16 words
The process of claim 26, wherein component (a) and component (b) are applied as a mixture.
Claim 29
Dependent Claim
30 words
The process of claim 27, wherein the mixture of component (a) and component (b) is applied to the surface in an amount of from 1 to 1000 g/m 2 .
Claim 30
Dependent Claim
30 words
The process of claim 27, wherein the mixture of component (a) and component (b) is applied to the surface in an amount of from 80 to 500 g/m 2 .
Claim 31
Dependent Claim
13 words
The process of claim 1, wherein component (b) is applied before component (a).
Claim 32
Dependent Claim
19 words
The process of claim 1, wherein component (b) is applied after component (a) but before component (a) has dried.
Claim 33
Dependent Claim
22 words
The process of claim 1, wherein, subsequent to their application, the two components are dried at a temperature up to 250° C.
Claim 34
Dependent Claim
11 words
The process of claim 5, wherein the fluorine-containing polymer is polytrifluorochloroethylene.
Claim 35
Dependent Claim
15 words
The process of claim 12, wherein the alkali metal hydrocarbon siliconate is potassium methyl siliconate.
Claim 36
Dependent Claim
14 words
The process of claim 34, wherein the potassium methyl siliconate is dissolved in water.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |