# US 5,705,590 A · Water absorption preventing agent having water solubility and a method for preventing water absorption

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- Number: US 5,705,590 A
- Document ID: US5705590A
- Status: Granted
- Kind: A
- Application number: 08/621,682
- Filed: 1996-03-26
- Granted: 1998-01-06
- Earliest claimed: 1995-03-27
- Assignees: Shin-Etsu Chem. Co., Ltd.
- Inventors: Tomohisa Suzuki; Kenichi Isobe; Mitsuo Asai; Shoji Ichinohe; Akira Yamamoto
- Web page: https://patentgrep.com/patent/US5705590A

## CPC

- C04B 41/009: {characterised by the material treated}
- C03C 25/40: Organo-silicon compounds
- C04B 41/495: {applied to the substrate as oligomers or polymers}
- C04B 41/64: Compounds having one or more carbon-to-metal of carbon-to-silicon linkages
- C04B 41/84: Compounds having one or more carbon-to-metal of carbon-to-silicon linkages
- C07F 7/1804: {Compounds having Si-O-C linkages (Si-O-acyl linkages C07F7/1896)}
- C08G 65/336: containing silicon
- C09K 3/18: for application to surfaces to minimize adherence of ice, mist or water thereto (rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30); Thawing or antifreeze materials for application to surfaces (used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00)
- D06M 13/513: with at least one carbon-silicon bond
- D06M 15/647: containing polyether sequences
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS

## Abstract

A water soluble water absorption preventing agent mainly comprising an organic silicon compound and/or its partial hydrolytic condensate, represented by the following general formula: ##STR1## wherein R.sup.1 denotes an alkyl group with 1-20 carbon atoms and with a linear chain or branched chain for which a halogen can substitute for part or all of the hydrogen atoms, R.sup.2 denotes a hydrogen atom or an alkyl group with 1-10 carbon atoms and with a linear chain or branched chain, R.sup.3 denotes a hydrogen atom or an alkyl group with 1-8 carbon atoms and with a linear chain or branched chain, m denotes an integer 1-2 and n denotes an integer 1-3 where m+n=3 or 4, p denotes an integer 1-50, and q denotes an integer 0-25.

## Claims

### Claim 1

A water soluble absorption preventing agent having water solubility comprising an organic silicone compound and/or its partial hydrolytic condensate, represented by the following general formula: ##STR4## wherein R.sup.1 denotes a linear chain or branched chain alkyl group having 1-20 carbon atoms for which a halogen can be substituted for part or all of the hydrogen atoms;
R.sup.2 denotes a hydrogen atom or a linear chain or branched chain alkyl group having 1-10 carbon atoms;
R.sup.3 denotes a hydrogen atom or a linear chain or branched chain alkyl group having 1-8 carbon atoms;
n denotes 2 or 3;
p denotes an integer 1-50; and
q denotes an integer 0-25.

### Claim 2 (depends on 1)

A water soluble water absorption preventing agent having water solubility of claim 1,
wherein n is 3.

### Claim 3 (depends on 1)

A water soluble water absorption preventing agent having water solubility of claim 1,
wherein R.sup.1 is a linear chain or branched chain alkyl group having 3-12 carbon atoms for which a halogen can be substituted for part or all of the hydrogen atoms;
R.sup.2 is selected from a hydrogen atom, methyl, ethyl, propyl or isopropyl group; and
R.sup.3 is selected from a hydrogen atom, a methyl or ethyl group.

### Claim 4

A method for preventing water absorption comprising the steps of:
applying to a substrate a water soluble water absorption preventing agent having water solubility comprising an organic silicon compound and/or its partial hydrolytic condensate, represented by the following formula: ##STR5## wherein R.sup.1 denotes the linear chain or branched chain alkyl group having 1-20 carbon atoms for which a halogen can substitute for part or all of the hydrogen atoms;
R.sup.2 denotes a hydrogen atom or a linear chain or branched chain alkyl group having 1-10 carbon atoms;
R.sup.3 denotes a hydrogen atom or linear chain or branched chain alkyl group having 1-8 carbon atoms;
n denotes 2 or 3;
p denotes an integer 1-50; and
q denotes an integer 0-25.

### Claim 5 (depends on 4)

The method for preventing water absorption of claim 4,
further comprising heat drying or rinsing said substrate treated with said soluble water absorption preventing agent, and then treating said substrate with an aqueous solution containing a hydrolytic condensation catalyst.

### Claim 6 (depends on 4)

The method for preventing water absorption of claim 4, wherein said substrate is a porous material.