US2833673A - Water-repellent asbestos-cement structural articles and method of making - Google Patents
Water-repellent asbestos-cement structural articles and method of making Download PDFInfo
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- US2833673A US2833673A US418757A US41875754A US2833673A US 2833673 A US2833673 A US 2833673A US 418757 A US418757 A US 418757A US 41875754 A US41875754 A US 41875754A US 2833673 A US2833673 A US 2833673A
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- repellent
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- 239000004568 cement Substances 0.000 title claims description 21
- 239000005871 repellent Substances 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 36
- 239000000203 mixture Substances 0.000 claims description 15
- 238000011068 loading method Methods 0.000 claims description 13
- 229920001577 copolymer Polymers 0.000 claims description 10
- KWDQAHIRKOXFAV-UHFFFAOYSA-N trichloro(pentyl)silane Chemical compound CCCCC[Si](Cl)(Cl)Cl KWDQAHIRKOXFAV-UHFFFAOYSA-N 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims description 6
- 239000005055 methyl trichlorosilane Substances 0.000 claims description 6
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- SSBOTKQTCWQWMG-UHFFFAOYSA-N trichloro(nonyl)silane Chemical compound CCCCCCCCC[Si](Cl)(Cl)Cl SSBOTKQTCWQWMG-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 150000001343 alkyl silanes Chemical class 0.000 description 1
- 125000005376 alkyl siloxane group Chemical group 0.000 description 1
- NUHPRPBUYOGFHX-UHFFFAOYSA-N butan-2-yl(trichloro)silane Chemical compound CCC(C)[Si](Cl)(Cl)Cl NUHPRPBUYOGFHX-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 229940024463 silicone emollient and protective product Drugs 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BNCXNUWGWUZTCN-UHFFFAOYSA-N trichloro(dodecyl)silane Chemical compound CCCCCCCCCCCC[Si](Cl)(Cl)Cl BNCXNUWGWUZTCN-UHFFFAOYSA-N 0.000 description 1
- ZOYFEXPFPVDYIS-UHFFFAOYSA-N trichloro(ethyl)silane Chemical compound CC[Si](Cl)(Cl)Cl ZOYFEXPFPVDYIS-UHFFFAOYSA-N 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- -1 triethoxysilane Chemical compound 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/495—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as oligomers or polymers
- C04B41/4961—Polyorganosiloxanes, i.e. polymers with a Si-O-Si-O-chain; "silicones"
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- the invention is concerned with the provision of durable weather-resistant asbestos-cement structural articles, and more particularly it relates to a surface treatment for such articles, which imparts thereto increased resistance to blooming and improved water repellency.
- asbestos-cement shingles and other structural parts of similar composition, have a ready tendency to absorb moisture when exposed to rain and weathering conditions. While this does not usually have any deleterious effect upon the over-all durability of such articles, it can produce quite unsatisfactory results in the appearance of shingles and siding material after application to av building, or even in storage before being used. Blooming in asbestos-cement shingles is a common phenomena. This is caused when soluble saltswithin the shingle leach to the surface by the action of water, and remain thereon as a white deposit. On over-all white shingles this action is of little concern, but on many varieties of colored shingles blooming can produce very noticeable, and detrimental, color changes, particularly about the outer edge portions of a shingle surface. While ways and means of combating this phenomena have heretofore been proposed, the results accomplished so far have been no more than partially effective.
- Any surface treatment for asbestos-cement shingles should be one which will prevent blooming both during manufacture and storage, and it should not add appreciably to the manufacturing costs of such articles.
- the treatment should eliminate with considerable permanence the tendency toward'bloomin'g, and it should make possible water-repellent shingles which are substantially unafiected byall weather conditions.
- the invention is illustrated in the accompanying drawing showing an asbestos-cement shingle treated in accordance with the present invention to provide a bloomresistant surface.
- the invention is based upon the finding that certain siloxane polymers, commonly known as silicone compositions, are excellent treating agents for asbestos-cement materials. These silicones will produce on shingle-type surfaces a colorless, invisible coating, which has a much longer water-repellent life than prior-known wax coatings, or those obtained by any surface treatments heretofore known for this purpose. More specifically the silicones which have proven most suitable are the polymers made by ordinary hydrolysis and condensation of the higher alkyl silanes. Polymers originating from silanes containing alkyl radicals of four or more carbon atoms are especially useful, and these higher alkyl derivatives, either as homopolymers or copolymers which contain other silanes or silicon chemicals, have outstanding advantages for the purpose of this invention.
- the first silicone polymer-in the above table is typical ofthose intended to be covered by this invention. This was made from equal mole proportions of amyltrichlorosilane and methyltrichlorosilane, by first reacting with anhydrous alcohol to form the alkoxy derivatives, and
- Loading as referred to in the table indicates the amount of silicone, in grams, which was used to treat a square of shingle surface. or 114 square feet.
- the actual amount of silicone needed to obtain satisfactory results, can, of course, be varied, but for economical reasons the loading should be kept as low as possible. With the higher alkyl siloxanes of this invention comparatively low loading will be found suitable. Overall this may range from 7 to 60 grams of silicone per square of surface, depending upon the particular shingle composition being dealt with but generally a loading of 20 to 40 grams per square will be suflicient to provide excellent water repellency.
- the method of applying the silicone to the shingle surface can also be adapted to suit other manufacturing procedure, but this can be done either with a complete solution of the silicone or in an emulsion liquid.
- the emulsion application which emulsion can be made by known emulsifying technique, is especially desirable, and has provided a ready Way of controlling the loading most suitable for various asbestos-cement shingle compositions.
- a silicone copolymer was prepared by mixing 6.5 moles of amyltrichlorosilane with one mole of tetraethylsilicate in a volume of isopropyl ether about equal to that of the chlorosilanes. Water to the extent of about 11.1 moles was added, and the mixture was refluxed to evolve HCl. The residue was neutralized ,by' adding excess sodium bicarbonate, and this mixture was then filtered. The clear filtrate was concentrated to 100% resin by vaccum stripping.
- a copolymer of amyltrichlorosilane with a silanic hydrogen containing silane, such as triethoxysilane is another type of silicone which will serve the purposes intended by this invention, and other suitable copolymer compositions are such as can be made from nonyltrichlorosilane and tetraethyl silicate, or dodecyl trichlorosilane and tetraethyl silicate.
- the, actual silicone treating agent may be one of a large number of such products which may be now available on the market, or can readily be made in accordance with the silicone polymer technique.
- An asbestos-cement shingle having a water-repellent bloom-resistant surface formed by coating said surface with a silicone composition, in a loading amount of from 20 grams to 40, grams per square of surface, said silicone being the hydrolysis and condensation copolymer product of amyltrichlorosilane and methyltrichlorosilane'in about equal mole proportions.
- An asbestos-cement shingle having a water-repellent bloom-resistant surface formed by coating said surface with a silicone composition, in a loading amount of from trichlorosilane and methyltrichlorosilane in about equal mole proportions.
- Method of producing a water-repellentbloom-resistant surface on asbestos-cement structural units which comprises applying to said surface an alkyl silicone composition, in a loading amount of from 20 grams to 40 grams per square of surface, said silicone being the hydrolysis and condensation copolymer product of amyltrichlorosilane and tetraethyl silicate in mole proportions ofabout 6.5 to 1 respectively.
- An asbestos-cement shingle having a water-repellent bloom-resistant surface formed by coating said surface with a silicone composition, in a loading about of from 7 grams to grams per square of surface, said silicone being the hydrolysis and condensation copolymer product of arnyltrichlorosilane and a silane taken from the group consisting of methyltrichlorosilane and tetraethylsilicate.
- Method of producing a water-repellent bloom-resistant surface of asbestos-cement structure units which comprises applying to said surface a silicone composition, in a loading amount of from about 7 grams to 60 grams per square of surface, said silicone being the hydrolysis and, condensation copolymer product of amyltrichlorosilane and a silane taken from the group consisting of,
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Paints Or Removers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
May 6, 1958 T. F. HART ET AL 2,833,673
WATER-REPELLENT ASBESTOS-CEMENT STRUCTURAL ARTICLES AND METHOD OF MAKING Filed March 25, 1954 Silicone Wafer -Repellenr Bloom-Resisfanr Surface Asbesfos-Cemenf Shingle INVENTORS THOMAS FwHART RONALD S.WISHART,JR.
A TTORNE) WATER-REPELLENT ASBESTOS-CEMENT STRUC- TURAL ARTICLES ANDMETHOD OF MAKING Thomas F. Hart, Eggertsville, N. Y., and Ronald S.
Wishart,.Jr., Lakewood, Ohio, assignors to Union Carbide Corporafion, a corporation of New York Application March 25, 1954, Serial No. 418,757
6 Claims. (Cl. 117-126) The invention is concerned with the provision of durable weather-resistant asbestos-cement structural articles, and more particularly it relates to a surface treatment for such articles, which imparts thereto increased resistance to blooming and improved water repellency.
It is well known that asbestos-cement shingles, and other structural parts of similar composition, have a ready tendency to absorb moisture when exposed to rain and weathering conditions. While this does not usually have any deleterious effect upon the over-all durability of such articles, it can produce quite unsatisfactory results in the appearance of shingles and siding material after application to av building, or even in storage before being used. Blooming in asbestos-cement shingles is a common phenomena. This is caused when soluble saltswithin the shingle leach to the surface by the action of water, and remain thereon as a white deposit. On over-all white shingles this action is of little concern, but on many varieties of colored shingles blooming can produce very noticeable, and detrimental, color changes, particularly about the outer edge portions of a shingle surface. While ways and means of combating this phenomena have heretofore been proposed, the results accomplished so far have been no more than partially effective.
Any surface treatment for asbestos-cement shingles should be one which will prevent blooming both during manufacture and storage, and it should not add appreciably to the manufacturing costs of such articles. The treatment should eliminate with considerable permanence the tendency toward'bloomin'g, and it should make possible water-repellent shingles which are substantially unafiected byall weather conditions.
It is the primary object of this invention to accomplish the aforesaid results, by providing an improved surface treatment for asbestos-cement shingles and other similar structural parts, which treatment will impart to such materials better water-repellent, Weather-resistant properties, and will also effectively retard deterioration by the alkaline, high humidity, conditions met with during the curing step in the manufacture of these products.
The invention is illustrated in the accompanying drawing showing an asbestos-cement shingle treated in accordance with the present invention to provide a bloomresistant surface.
The invention is based upon the finding that certain siloxane polymers, commonly known as silicone compositions, are excellent treating agents for asbestos-cement materials. These silicones will produce on shingle-type surfaces a colorless, invisible coating, which has a much longer water-repellent life than prior-known wax coatings, or those obtained by any surface treatments heretofore known for this purpose. More specifically the silicones which have proven most suitable are the polymers made by ordinary hydrolysis and condensation of the higher alkyl silanes. Polymers originating from silanes containing alkyl radicals of four or more carbon atoms are especially useful, and these higher alkyl derivatives, either as homopolymers or copolymers which contain other silanes or silicon chemicals, have outstanding advantages for the purpose of this invention.
In the manufacture of asbestos-cement products, by either the so-called wet or dry process, a curing of the cement is necessary in order to develop suitable handling strength before use. This is accomplished under very humid storage conditions, and also sometimes by autoclaving. Moreover, for the sake of manufacturing efiiciency and economy, any water-repellency treatment of theproducts generally is made prior to the storage and curing steps. Under these highly humid and alkaline conditions,
treatments previously proposed have generally been of very short life in their effectiveness, and this disadvantagehas also applied to certain silicone compounds which have been experimented with in this capacity. The water-repellent properties of methyl and ethyl silicones for example, deteriorate rapidly under the usual storage or autoclaving conditions, whereas the silicones derived from butyl and amyl silances, or those of higher alkyl radical'content,
and their copolymers, survive these conditions, and havemueh greater permanency. This is apparently due to the much slower attack of alkali on the higher alkyl silicones than on the lower alkyl analogues.
. An experiment'giving clear evidence of the aforesaid facts is shown in" the following table, wherein the water repellency of asbestos-cement shingles, treated with different silicones, is compared after aging at humidity.
Water. repellency The first silicone polymer-in the above table is typical ofthose intended to be covered by this invention. This was made from equal mole proportions of amyltrichlorosilane and methyltrichlorosilane, by first reacting with anhydrous alcohol to form the alkoxy derivatives, and
then hydrolyzing and condensing this intermediate under the usual conditions employed in making silicone products. The other: two silicones compared are conventional polyof ethyltrichlorosilane and methyldirnethyl chlorosilances respectively.
Loading as referred to in the table indicates the amount of silicone, in grams, which was used to treat a square of shingle surface. or 114 square feet. The actual amount of silicone needed to obtain satisfactory results, can, of course, be varied, but for economical reasons the loading should be kept as low as possible. With the higher alkyl siloxanes of this invention comparatively low loading will be found suitable. Overall this may range from 7 to 60 grams of silicone per square of surface, depending upon the particular shingle composition being dealt with but generally a loading of 20 to 40 grams per square will be suflicient to provide excellent water repellency. The method of applying the silicone to the shingle surface can also be adapted to suit other manufacturing procedure, but this can be done either with a complete solution of the silicone or in an emulsion liquid. The emulsion application, which emulsion can be made by known emulsifying technique, is especially desirable, and has provided a ready Way of controlling the loading most suitable for various asbestos-cement shingle compositions.
Another illustration of a preferred embodiment of the invention is given in the following example:
A silicone copolymer was prepared by mixing 6.5 moles of amyltrichlorosilane with one mole of tetraethylsilicate in a volume of isopropyl ether about equal to that of the chlorosilanes. Water to the extent of about 11.1 moles was added, and the mixture was refluxed to evolve HCl. The residue was neutralized ,by' adding excess sodium bicarbonate, and this mixture was then filtered. The clear filtrate was concentrated to 100% resin by vaccum stripping.
,This silicone in an amount of 300 grams was made into an aqueous emulsion by standard technique, using an emulsifying agent such :as morpholine and oleic acid, and with the final emulsion concentrate containing 40% of the silicone. The concentrated emulsion was then diluted to=4% silicone content, and "this liquid was applied to asbestos-cement shingles at loadings M20 and 40 grams of siliconeper square of shingles. In 24 hours excellent water repellency had developed. The shingles were then placed in a.100% relative humidity. chamber at 50C., andafter 109 days storage the shingles still had excellent repellency. This clearly indicates that this treatment, with both silicone loadings as indicated, provides adequate resistance to the alkalis in the shingle composition. Such results also show a striking improvement over what. can be accomplished with the lower alkylsilicones, when, as indicated in the previous table, a similar kind of treatment with both a methyl and ethyl siliconeproduct was entirely ineffective in water repellency after a shingle storage of four weeks or less, under 100% relative humidity and at 1 room temperature. 1
, Other higher alkyl silicone homopolymers,as well as the copolymer compositions of the aforesaid examples, have also been=tested, and have been found to exert excellent water repellency action. This includes silicones made from starting materials such as normal and secondary butyl trichlorosilane, amyltrichlorosilane and nonyltrichlorosilane. I A copolymer of amyltrichlorosilane with a silanic hydrogen containing silane, such as triethoxysilane, is another type of silicone which will serve the purposes intended by this invention, and other suitable copolymer compositions are such as can be made from nonyltrichlorosilane and tetraethyl silicate, or dodecyl trichlorosilane and tetraethyl silicate. Thus, the, actual silicone treating agent may be one of a large number of such products which may be now available on the market, or can readily be made in accordance with the silicone polymer technique.
We claim:
, 1 An asbestos-cement shingle: having a water-repellent bloom-resistant surface formed by coating said surface with a silicone composition, in a loading amount of from 20 grams to 40, grams per square of surface, said silicone being the hydrolysis and condensation copolymer product of amyltrichlorosilane and methyltrichlorosilane'in about equal mole proportions.
2. An asbestos-cement shingle having a water-repellent bloom-resistant surface formed by coating said surface with a silicone composition, in a loading amount of from trichlorosilane and methyltrichlorosilane in about equal mole proportions.
' 4. Method of producing a water-repellentbloom-resistant surface on asbestos-cement structural units which comprises applying to said surface an alkyl silicone composition, in a loading amount of from 20 grams to 40 grams per square of surface, said silicone being the hydrolysis and condensation copolymer product of amyltrichlorosilane and tetraethyl silicate in mole proportions ofabout 6.5 to 1 respectively.
5. An asbestos-cement shingle having a water-repellent bloom-resistant surface formed by coating said surface with a silicone composition, in a loading about of from 7 grams to grams per square of surface, said silicone being the hydrolysis and condensation copolymer product of arnyltrichlorosilane and a silane taken from the group consisting of methyltrichlorosilane and tetraethylsilicate.
6. Method of producing a water-repellent bloom-resistant surface of asbestos-cement structure units which comprises applying to said surface a silicone composition, in a loading amount of from about 7 grams to 60 grams per square of surface, said silicone being the hydrolysis and, condensation copolymer product of amyltrichlorosilane and a silane taken from the group consisting of,
methyltrichlorosilane and tetraethylsilicate.
References Cited in the file of this patent UNITED STATES PATENTS 2,559,791 Peyrot July 10, 1951 2,574,168 Brick Nov. 6, 1951 2,617,746 Parry Nov. 11, 1952 2,588,828 Greiner Mar. 11, 1952 2,679,495 Bunnell May 25, 1954 2,683,674 Hatcher July 13, 1954
Claims (1)
1. AN ASBESTOS-CEMENT SHINGLE HAVING A WATER-REPELLENT BLOOM-RESISTANT SURFACE FORMED BY COATING SAID SURFACE WITH A SILICONE COMPOSITION, IN A LOADING AMOUNT OF FROM 20 GRAMS TO 40 GRAMS PER SQUARE OF SURFACE, SAID SILICONE BEING THE HYDROLYSIS AND CONDENSATION COPOLYMER PRODUCT OF AMYLTRICHLOROSILANE AND METHYLTRICHLOROSILANE IN ABOUT EQUAL MOLE PROPORTIONS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US418757A US2833673A (en) | 1954-03-25 | 1954-03-25 | Water-repellent asbestos-cement structural articles and method of making |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US418757A US2833673A (en) | 1954-03-25 | 1954-03-25 | Water-repellent asbestos-cement structural articles and method of making |
Publications (1)
Publication Number | Publication Date |
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US2833673A true US2833673A (en) | 1958-05-06 |
Family
ID=23659456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US418757A Expired - Lifetime US2833673A (en) | 1954-03-25 | 1954-03-25 | Water-repellent asbestos-cement structural articles and method of making |
Country Status (1)
Country | Link |
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US (1) | US2833673A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3009829A (en) * | 1957-03-25 | 1961-11-21 | Johns Manville | Impregnating composition, method of applying same to asbestos, and article produced thereby |
US3048466A (en) * | 1958-12-22 | 1962-08-07 | Owens Corning Fiberglass Corp | Treatment for glass bodies in filament forming operation |
US3063788A (en) * | 1960-08-11 | 1962-11-13 | Owens Corning Fiberglass Corp | Treatment for glass bodies |
US10865565B2 (en) | 2018-07-11 | 2020-12-15 | Owens Coming Intellectual Capital, LLC | Shingles with increased hydrophobicity |
US11124968B2 (en) | 2014-02-21 | 2021-09-21 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
US12065835B2 (en) | 2019-12-03 | 2024-08-20 | Owens Corning Intellectual Capital, Llc | Roofing materials including a layer of a parting agent |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2559791A (en) * | 1948-10-19 | 1951-07-10 | Rhone Poulenc Sa | Electrical insulating materials |
US2574168A (en) * | 1950-01-19 | 1951-11-06 | Walter Wurdack | Method of coating porous masonry to render it water repellent |
US2588828A (en) * | 1948-12-11 | 1952-03-11 | Johns Manville | Composition for and method of producing coated cement surfaces and the product resulting therefrom |
US2617746A (en) * | 1949-12-19 | 1952-11-11 | Johns Manville | Method of inhibiting carbonate bloom |
US2679495A (en) * | 1950-08-07 | 1954-05-25 | Allied Chem & Dye Corp | Siloxane waterproofing compositions of superior permanency |
US2683674A (en) * | 1950-08-07 | 1954-07-13 | Allied Chem & Dye Corp | Waterproofing masonry with alkyl polysiloxanes |
-
1954
- 1954-03-25 US US418757A patent/US2833673A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2559791A (en) * | 1948-10-19 | 1951-07-10 | Rhone Poulenc Sa | Electrical insulating materials |
US2588828A (en) * | 1948-12-11 | 1952-03-11 | Johns Manville | Composition for and method of producing coated cement surfaces and the product resulting therefrom |
US2617746A (en) * | 1949-12-19 | 1952-11-11 | Johns Manville | Method of inhibiting carbonate bloom |
US2574168A (en) * | 1950-01-19 | 1951-11-06 | Walter Wurdack | Method of coating porous masonry to render it water repellent |
US2679495A (en) * | 1950-08-07 | 1954-05-25 | Allied Chem & Dye Corp | Siloxane waterproofing compositions of superior permanency |
US2683674A (en) * | 1950-08-07 | 1954-07-13 | Allied Chem & Dye Corp | Waterproofing masonry with alkyl polysiloxanes |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3009829A (en) * | 1957-03-25 | 1961-11-21 | Johns Manville | Impregnating composition, method of applying same to asbestos, and article produced thereby |
US3048466A (en) * | 1958-12-22 | 1962-08-07 | Owens Corning Fiberglass Corp | Treatment for glass bodies in filament forming operation |
US3063788A (en) * | 1960-08-11 | 1962-11-13 | Owens Corning Fiberglass Corp | Treatment for glass bodies |
US11124968B2 (en) | 2014-02-21 | 2021-09-21 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
US11136761B2 (en) | 2014-02-21 | 2021-10-05 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
US11933048B2 (en) | 2014-02-21 | 2024-03-19 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
US10865565B2 (en) | 2018-07-11 | 2020-12-15 | Owens Coming Intellectual Capital, LLC | Shingles with increased hydrophobicity |
US10865567B2 (en) | 2018-07-11 | 2020-12-15 | Owens Coming Intellectual Capital, LLC | Shingles with increased hydrophobicity |
US10865566B2 (en) | 2018-07-11 | 2020-12-15 | Owens Coming Intellectual Capital, LLC | Shingles with increased hydrophobicity |
US11359377B2 (en) | 2018-07-11 | 2022-06-14 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
US11629496B2 (en) | 2018-07-11 | 2023-04-18 | Owens Corning Intellectual Capital, Llc | Shingles with increased hydrophobicity |
US12065835B2 (en) | 2019-12-03 | 2024-08-20 | Owens Corning Intellectual Capital, Llc | Roofing materials including a layer of a parting agent |
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