WO2013043725A1 - Process of preparing a siloxane copolymer - Google Patents
Process of preparing a siloxane copolymer Download PDFInfo
- Publication number
- WO2013043725A1 WO2013043725A1 PCT/US2012/056118 US2012056118W WO2013043725A1 WO 2013043725 A1 WO2013043725 A1 WO 2013043725A1 US 2012056118 W US2012056118 W US 2012056118W WO 2013043725 A1 WO2013043725 A1 WO 2013043725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- concrete
- cyclic
- structures
- substrate
- alkene
- Prior art date
Links
- 229920001577 copolymer Polymers 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 239000000758 substrate Substances 0.000 claims abstract description 68
- 239000004567 concrete Substances 0.000 claims abstract description 67
- 239000000203 mixture Substances 0.000 claims abstract description 66
- 239000005871 repellent Substances 0.000 claims abstract description 26
- 230000002940 repellent Effects 0.000 claims abstract description 26
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- -1 cyclic siloxane Chemical class 0.000 claims description 55
- 239000000839 emulsion Substances 0.000 claims description 55
- 150000001336 alkenes Chemical class 0.000 claims description 44
- 239000004094 surface-active agent Substances 0.000 claims description 29
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical group CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 27
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 22
- 239000011381 foam concrete Substances 0.000 claims description 20
- 239000011541 reaction mixture Substances 0.000 claims description 20
- 125000004432 carbon atom Chemical group C* 0.000 claims description 18
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1-dodecene Chemical compound CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 claims description 15
- 239000011449 brick Substances 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 13
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 239000004574 high-performance concrete Substances 0.000 claims description 10
- 239000011372 high-strength concrete Substances 0.000 claims description 10
- 229910052697 platinum Inorganic materials 0.000 claims description 10
- 239000011513 prestressed concrete Substances 0.000 claims description 10
- 239000011385 rapid strength concrete Substances 0.000 claims description 10
- 239000011371 regular concrete Substances 0.000 claims description 10
- 239000011376 self-consolidating concrete Substances 0.000 claims description 10
- 239000011378 shotcrete Substances 0.000 claims description 10
- 239000011373 stamped concrete Substances 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 10
- 239000002023 wood Substances 0.000 claims description 10
- 229940069096 dodecene Drugs 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 6
- 229920001587 Wood-plastic composite Polymers 0.000 claims description 5
- 239000002969 artificial stone Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000011518 fibre cement Substances 0.000 claims description 5
- 239000011505 plaster Substances 0.000 claims description 5
- 239000011155 wood-plastic composite Substances 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 12
- 229920001296 polysiloxane Polymers 0.000 description 12
- 125000004122 cyclic group Chemical group 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 10
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 7
- 230000007717 exclusion Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000003995 emulsifying agent Substances 0.000 description 6
- 239000002736 nonionic surfactant Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 150000001298 alcohols Chemical class 0.000 description 5
- QMNOIORHZMRPLS-UHFFFAOYSA-N butan-1-ol;ethane-1,2-diol;propane-1,2-diol Chemical compound OCCO.CCCCO.CC(O)CO QMNOIORHZMRPLS-UHFFFAOYSA-N 0.000 description 5
- 238000007654 immersion Methods 0.000 description 5
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 229920002050 silicone resin Polymers 0.000 description 4
- 239000004711 α-olefin Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920001983 poloxamer Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- CMCBDXRRFKYBDG-UHFFFAOYSA-N 1-dodecoxydodecane Chemical compound CCCCCCCCCCCCOCCCCCCCCCCCC CMCBDXRRFKYBDG-UHFFFAOYSA-N 0.000 description 2
- PUNGSQUVTIDKNU-UHFFFAOYSA-N 2,4,6,8,10-pentamethyl-1,3,5,7,9,2$l^{3},4$l^{3},6$l^{3},8$l^{3},10$l^{3}-pentaoxapentasilecane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O[Si](C)O1 PUNGSQUVTIDKNU-UHFFFAOYSA-N 0.000 description 2
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Chemical group CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 239000004890 Hydrophobing Agent Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 150000001343 alkyl silanes Chemical class 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000006459 hydrosilylation reaction Methods 0.000 description 2
- 239000007764 o/w emulsion Substances 0.000 description 2
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 2
- 125000005375 organosiloxane group Chemical group 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical class OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000004150 EU approved colour Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 239000012963 UV stabilizer Substances 0.000 description 1
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- OGBUMNBNEWYMNJ-UHFFFAOYSA-N batilol Chemical class CCCCCCCCCCCCCCCCCCOCC(O)CO OGBUMNBNEWYMNJ-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004710 electron pair approximation Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 150000002462 imidazolines Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- KBXJHRABGYYAFC-UHFFFAOYSA-N octaphenylsilsesquioxane Chemical compound O1[Si](O2)(C=3C=CC=CC=3)O[Si](O3)(C=4C=CC=CC=4)O[Si](O4)(C=5C=CC=CC=5)O[Si]1(C=1C=CC=CC=1)O[Si](O1)(C=5C=CC=CC=5)O[Si]2(C=2C=CC=CC=2)O[Si]3(C=2C=CC=CC=2)O[Si]41C1=CC=CC=C1 KBXJHRABGYYAFC-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940006093 opthalmologic coloring agent diagnostic Drugs 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004819 silanols Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 1
- 235000011067 sorbitan monolaureate Nutrition 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000003445 sucroses Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
- C04B41/4535—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application applied as a solution, emulsion, dispersion or suspension
-
- 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"
-
- 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
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
- C04B41/64—Compounds having one or more carbon-to-metal of carbon-to-silicon linkages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/045—Polysiloxanes containing less than 25 silicon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
Definitions
- the present invention relates to a process for preparing a cyclic siloxane copolymer, a water repellent composition for treating porous substrates like concrete, especially reinforced concrete.
- Imparting or improving water repellency of a substrate is desired for a number of substrates including organic or inorganic building components, for example, concrete, masonry, stucco, natural or artificial stone, ceramic, terracotta bricks, plaster board, fibre cement board, or other cement containing products, wood particle board, wood plastic composites, oriented strand board (OSB) or wood.
- organic or inorganic building components for example, concrete, masonry, stucco, natural or artificial stone, ceramic, terracotta bricks, plaster board, fibre cement board, or other cement containing products, wood particle board, wood plastic composites, oriented strand board (OSB) or wood.
- OSB oriented strand board
- the desired water repellency properties are usually obtained by applying a water- repellent composition to the external surface of a substrate so as to create a water repellent coating on the substrate which protects this substrate from weathering and other deterioration. At least the outermost surface of building materials is treated in order to become waterproof.
- Silicone compounds are used as water repellents due to their durability, good hydrophobicity and ease of application.
- silicone resins in solvent and
- methylsiliconates were used as silicone water repellent compounds. Then followed siloxane and silane based products in solvents. Next generation of water repellents is generally water based for environmental reasons and ease of use.
- the active ingredients contain siloxanes, silicone resins and silanes (and combinations of them).
- US 5074912 discloses a water repellent composition for treating porous substrates with an emulsion containing a siloxane which is a linear methylhydrogen-methylalkyi siloxane copolymer or a methylhydrogen-methylalkyi cyclosiloxane copolymer.
- this product presents a Volatile Organic Content (VOC) of more than 10Og/l whereas emulsions having less than 10Og/l or even less than 50 g/l are desired.
- VOC Volatile Organic Content
- WO200813423A1 describes silicone emulsions for imparting water reppellency with a VOC content of below 10Og/l comprising phenylsilsesquioxane.
- the emulsions according to this disclosure lack however reactivity and depth of penetration in order to fulfil the requirement for long term protection of structural concrete or other porous building materials.
- the invention provides a process of preparing a siloxane copolymer by reacting
- R is an alkyl radical having 1 to 3 carbon atoms; c is equal or higher than 4.
- disclosure of a range of, for example, 2.0 to 4.0 includes the subsets of, for example, 2.1 to 3.5, 2.3 to 3.4, 2.6 to 3.7, and 3.8 to 4.0, as well as any other subset subsumed in the range.
- disclosure of Markush groups includes the entire group and also any individual members and subgroups subsumed therein.
- disclosure of the Markush group a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, or an alkaryl group includes the member alkyl individually; the subgroup alkyl and aryl; and any other individual member and subgroup subsumed therein.
- n-octyltriethoxysilane fulfil most of these requirements however they release alcohol during reaction with the substrate and are therefore high VOC products.
- n-octyltriethoxysilane which is frequently used for concrete protection e.g. as active in water based silicone water repellents has a VOC of >300g/l.
- the potential active of a low VOC water repellent emulsion for reinforced concrete should be small molecular size to allow deep penetration into the pores of the concrete, chemically reactive to the substrate or crosslink- able with itself in order to be durable, resistant to degradation at high pH and at the same time, be non-volatile,
- to be non-volatile means that the active compound needs to be above a certain molecular weight.
- the present invention relates to a process of reacting an alkene with a cyclic siloxane to result in an effective low VOC water repellent active compound.
- a minimum ratio of alkene to cyclic siloxane is required.
- the chain length of the alkene should neither be too short in order to yield a low VOC content nor too long in order to allow good penetration into porous substrates.
- the alkene is 1 -octene, 1 -dodecene or 1 -isooctene.
- the molar ratio alkene:cyclic siloxane is at least 1 .2:1 .
- the molar ratio alkene:cyclic siloxane is at least 1 .5:1 .
- a mixture of cyclic siloxanes (structure I) is used with c being comprised between 4 and 6.
- a is less than 3 and b is equal or greater than 2.
- a platinium catalyst is used for the reaction.
- composition according to the invention has a Volatile Organic Content according to ASTM D 5095 below 10Og/l.
- the composition has a Volatile Organic Content according to ASTM D 5095 below 50g/l.
- reaction may be a case as illustrated below:
- unreacted cyclic siloxane, unreacted olefin and isomerized olefin should be removed from the reaction product, for example by stripping, preferably using vacuum.
- the siloxane copolymer produced by the process according to the invention is usually not a pure compound, but a mixture of different siloxane copolymers, and this mixture is used to provide the composition for treating porous substrates.
- the invention also provides a water repellent composition for treating porous substrates comprising an emulsion which includes water, at least one surfactant, and a siloxane copolymer obtained by the process defined herein.
- the water repellent composition contains in addition to the siloxane copolymer other components that can provide hydrophobicity like organic oils, waxes or alkylsilanes under the presumption that the VOC level is not increased above the required value.
- the water repellent composition contains in addition to the siloxane copolymer (cyclic copolymer) other components which preferably do not significantly affect the VOC level like for example, polysiloxanes or silicone resins.
- the invention further provides a process for improving the water repellency of a substrate by treating it with a composition defined above.
- improving the water repellency of a substrate is done by including the composition into the starting materials or during manufacture of the substrate.
- the invention provides the use of the siloxane copolymer obtained according to the process to improve water repellency of a substrate by applying the composition to the finished substrate or by including the composition into the starting materials or during manufacture of the substrate.
- substrates include organic or inorganic components.
- substrates include at least one of concrete, especially reinforced concrete, masonry, stucco, natural or artificial stone, ceramic, terracotta bricks, plaster board, fibre cement board, or other cement containing products, wood particle board, wood plastic composites, oriented strand board (OSB) or wood.
- substrates may include at least one of regular concrete, high strength concrete, stamped concrete, high performance concrete, self consolidating concrete, shotcrete, cellular concrete, lightweight aerated concrete, variable density concrete, foamed concrete, lightweight or ultra-lightweight concrete, rapid strength concrete, pre-stressed concrete or reinforced concrete for use in pavements,
- substrates include at least one of stucco, natural or artificial stone, ceramic, terracotta bricks, plaster board, fibre cement board, or other cement containing products, wood particle board, wood plastic composites, oriented strand board (OSB) or wood.
- siloxanes copolymer according to (I I) can be used as such or in a VOC exempt solvent water based products are preferred due to their ease of use and environmental advantages.
- the invention extends to a water repellent composition for improving the water repellency of substrates comprising an emulsion.
- Aqueous emulsions wherein the disperse oil phase is a cyclic copolymer of the formula (II) can be prepared by a number of different ways, for example, by
- the siloxane copolymer can be dispersed into an aqueous solution or dispersion containing the surfactant under a constant mixing condition.
- part or all of the surfactant can be combined with the siloxane copolymer and the mixture in turn is dispersed into the water.
- the specific sequence of combination is not critical and high shear homogenization is not absolutely necessary; the effectiveness of the emulsification procedure depends on specific surfactant package used and the procedure can be adjusted according to the desired emulsion property.
- the cyclic copolymer of the formula (I I) can be partially or completely hydrolyzed with water prior or during
- the emulsifier is a surfactant or mixture of surfactants having the ability to stabilize an aqueous emulsion.
- the surfactant may be an anionic surfactant, cationic surfactant, non-ionic surfactant, amphoteric surfactant, or a mixture of surfactants.
- Non-ionic surfactants and anionic surfactants are typically used in combination. Mixtures containing two or more non-ionic surfactants are preferred.
- non-ionic surfactants include condensates of ethylene oxide with long chain fatty alcohols or fatty acids such as a C 12-16 alcohol, condensates of ethylene oxide with an amine or an amide, condensation products of ethylene and propylene oxide, esters of glycerol, sucrose, sorbitol, fatty acid alkylol amides, sucrose esters, and fatty amine oxides. Silicone surfactant and fluoro surfactants can also be used.
- non-ionic surfactants include alcohol ethoxylates sold under the trade name BRIJ, Synperonic(TM), Renex(TM) by Croda, Edison, New Jersey, Lutensol(R) by BASF (Florham Park, New Jersey).
- BRIJ L23 an ethoxylated alcohol known as polyoxyethylene (23) lauryl ether
- BRIJ L4 another ethoxylated alcohol known as polyoxyethylene (4) lauryl ether
- Lutensol(R) XP-70 and Lutensol(R) XP-140 Synperonic 13-6 and Synperonic 13-12, all ethoxylated alcohols.
- non-ionic surfactants include ethoxylated alcohols sold under the trademark TERGITOL(R) by The Dow Chemical Company, Midland, Michigan, including TERGITOL(R) 15-S-5, TERGITOL(R) 15-S- 12,
- TERGITOL(R) 15-S- 15, and TERGITOL(R) 15-S-40 Sorbitan esters and their ethoxylated derivatives can also be used. Examples include those sold under the trade name
- silicone surfactant include silicone polyethers sold under the trade name Dow Corning(R) by Dow Corning Corporation, Midland, Michigan, such as Dow Corning(R) Q2-5247 Fluid and Dow Corning (R) Q2-521 1 Superwetting Agent.
- Using a silicone superwetting agent can have an enhanced water repellent effect.
- Such a superwetting agent can be incorporated as a part of the emulsifier package or added separately as an additive to the aqueous phase.
- HLB Hydrophile-Lipophile Balance
- the rest have a high HLB above 12, such that the combined effective HLB is within the range 9 -20, preferably 10 - 18.
- HLB Hydrophile-Lipophile Balance
- Particularly beneficial for the emulsion of the inventive cyclic copolymer is to use a combination of emulsifiers comprising at least one co-surfactant having a low HLB and insoluble in water, and used in a fashion taught in US6074470.
- Suitable anionic surfactants include alkali metal soaps of higher fatty acids, alkylaryl sulphonates such as sodium dodecyl benzene sulphonate, long chain fatty alcohol sulphates, olefin sulphates and olefin sulphonates, sulphated monoglycerides, sulphated esters, sulphonated ethoxylated alcohols, sulphosuccinates, alkane sulphonates, phosphate esters, alkyl isethionates, alkyl taurates, and alkyl sarcosinates.
- alkali metal soaps of higher fatty acids alkylaryl sulphonates such as sodium dodecyl benzene sulphonate, long chain fatty alcohol sulphates, olefin sulphates and olefin sulphonates, sulphated monoglycerides, sulphated esters, sulphon
- Suitable cationic surfactants include alkylamine salts, quaternary ammonium salts, sulphonium salts, and phosphonium salts.
- suitable amphoteric surfactants include imidazoline compounds, alkylamino acid salts, and betaines.
- the emulsifier can for example be used at 0.1 to 40%, preferably 0.5-10% by weight based on the weight of the cyclic copolymer.
- the aqueous phase should have a slightly acid pH, for example pH 4 to pH 6.5. Buffer solutions can be used to stabilize the desired pH.
- the concentration of cyclic copolymer in accordance with the present invention in such an oil-in-water emulsion can be from 1 to 85% by weight or alternatively from 5 to 80% by weight but is more preferably for example between 10 and 80% by weight of the total composition.
- the total concentration of cyclic copolymer plus secondary hydrophobing agent can for example be from about 1 up to 80% by weight of the total composition.
- the concentration of emulsifier in such an oil-in water emulsion can for example be between 0.1 and 20% by weight of the total composition.
- Water can for example be present at 15 to 89.5% by weight of the total composition. In each instance when referred to in % values the total present is 100% and the remainder of the emulsion is made up of other ingredients, typically water and surfactant(s) and optional additives to a value of 100%.
- Emulsions of cyclic copolymers in accordance with the present invention can contain various additives known in silicone emulsions, for example fillers, colouring agents such as dyes or pigments, heat stabilizers, flame retardants, UV stabilizers, fungicides, biocides, thickeners, preservatives, antifoams, freeze thaw stabilizers, or inorganic salts to buffer pH.
- Such materials can be added to the cyclic copolymer before or after the cyclic copolymer has been emulsified.
- the emulsion contains in addition to the siloxane copolymer other components that can provide hydrophobicity like organic oils, waxes or alkylsilanes under the presumption that the VOC level is not increased above the required value.
- the emulsion contains in addition to the cyclic copolymer other components which preferably do not significantly affect the VOC level like for example, polysiloxanes or silicone resins.
- the emulsion can be formulated to be in the form of a gel or a cream. This can be done by using thickeners such as bentonite or montmorillonite in the emulsion or by having an active cyclic copolymer content of above 60% to 85% in the emulsion.
- Such creams of high organosilane content can be formed by preparing a mobile aqueous emulsion from a minor part of the organosiloxane with all of the emulsifier and water and mixing the remaining organosiloxane into the emulsion using a colloid mill, a high speed stator and rotor stirrer, or a pressure emulsification unit.
- the invention encompasses the use of the composition to improve water repellency of a substrate by applying the composition to the finished substrate.
- the composition is used to improve water repellency of a substrate by including the composition in the starting materials before or during manufacture of the substrate.
- the invention extends to a process for improving the water repellency of a substrate by treating it with an emulsion having a Volatile Organic Content according to ASTM 5095 below 50g/l which includes water, at least one surfactant, and a siloxane copolymer obtained by the process of
- the substrate comprises at least one of regular concrete, high strength concrete, stamped concrete, high performance concrete, self consolidating concrete, shotcrete, cellular concrete, lightweight aerated concrete, variable density concrete, foamed concrete, lightweight or ultra-lightweight concrete, rapid strength concrete, pre-stressed concrete or reinforced concrete for use in pavements, highways/roadways, bridges/overpasses, parking structures, stadiums, precast structures, tilt up structures, drainage pipes, tunnels or reservoir structures, concrete masonry units, concrete blocks, split faced blocks, natural stone or bricks for use on building facades or foundations
- the invention also provides a use of an emulsion having a Volatile Organic Content according to ASTM 5095 below 50g/l which includes water, at least one surfactant, and a siloxane copolymer obtained by the process of
- R is methyl; and c is between 4 and 6,
- the substrate comprises at least one of regular concrete, high strength concrete, stamped concrete, high performance concrete, self consolidating concrete, shotcrete, cellular concrete, lightweight aerated concrete, variable density concrete, foamed concrete, lightweight or ultra-lightweight concrete, rapid strength concrete, pre- stressed concrete or reinforced concrete for use in pavements, highways/roadways, bridges/overpasses, parking structures, stadiums, precast structures, tilt up structures, drainage pipes, tunnels or reservoir structures, concrete masonry units, concrete blocks, split faced blocks, natural stone or bricks for use on building facades or foundations
- the invention also provides a process for improving the water repellency of a substrate by treating it with a water repellent composition, having a Volatile Organic Content according to ASTM 5095 below 50g/l, comprising an emulsion which includes water, at least one surfactant, and a siloxane copolymer obtained by the process of A) reacting
- the substrate comprises at least one of regular concrete, high strength concrete, stamped concrete, high performance concrete, self consolidating concrete, shotcrete, cellular concrete, lightweight aerated concrete, variable density concrete, foamed concrete, lightweight or ultra-lightweight concrete, rapid strength concrete, pre-stressed concrete or reinforced concrete for use in pavements, highways/roadways, bridges/overpasses, parking structures, stadiums, precast structures, tilt up structures, drainage pipes, tunnels or reservoir structures, concrete masonry units, concrete blocks, split faced blocks, natural stone or bricks for use on building facades or foundations.
- the invention also provides a use of the siloxane copolymer obtained by the process of
- R is an alkyl radical having 1 to 3 carbon atoms; c is equal to or higher than 4, in the presence of a platinum catalyst so as to form a cyclic copolymer having the formula :
- a water repellent composition comprising an emulsion which includes water, at least one surfactant and the siloxane copolymer and having a Volatile Organic Content according to ASTM 5095 below 50g/l, to improve water repellency of a finished substrate by applying the composition to the substrate, wherein the substrate comprises at least one of regular concrete, high strength concrete, stamped concrete, high performance concrete, self consolidating concrete, shotcrete, cellular concrete, lightweight aerated concrete, variable density concrete, foamed concrete, lightweight or ultra-lightweight concrete, rapid strength concrete, pre-stressed concrete or reinforced concrete for use in pavements,
- VOC Volatile Organic
- VOC Volatile Organic
- mass/volume i.e. grams/litre
- VOC calculation can involve determination of individual component densities, accounting for exempt components, and in water-based formulations, factoring out the water - however, the VOC of an active ingredient or mix, or an emulsion of that active ingredient or mix is still chiefly dependent on the volatile content of the active components.
- the volatile content is measured by the method ASTM 5095.Standard Test Method for Determination of the Nonvolatile Content (NVC) in Silanes, Siloxanes and Silane-Siloxane Blends Used in Masonry Water Repellent Treatments” that incorporates an acid catalyst (p-toluene sulfonic acid) to aid in the reaction, and also adds a room temperature induction time to allow the reaction to occur before placing the test solutions in an oven. VOC is then calculated per EPA method 24, according to the formula:
- VOC ⁇ 100-NVC%-water%-exemptsol%) * density of product(g/ml ⁇ / ⁇ 1 -(density of coating (g/L)* water%) / (density of water*100) - (density of coating(g/ml)*exemptsol%) / (density of exemptsolvent * 100) ⁇
- Depth of penetration is tested after the treatment has cured for at least 7 days under standard conditions.
- the treated substrate is split with a chisel and a water-ink or water-soluble dye solution is applied to the fresh surface.
- the parts of the substrate that are treated will not be wetted by the ink solution while the untreated core gets stained.
- the distance of the so obtained line to the treated surface is measured with a ruler.
- test 11.4 (horizontal version), which is designed to measure the quantity of water absorbed by the surface (5cm 2 exposed surface) of a masonry material over a defined period of time. The water absorption in ml. of each block after various times is given. An untreated concrete block was used as a reference ('ref').
- a suitable concrete or mortar cube measuring 2 inches per edge (Approx. 5 cm per edge) is treated to achieve a desired coverage rate - for instance, 0.5 litres/square meter or 150 square feet/gallon.
- the treated substrate is cured for the required time, weighed dry, and then immersed fully in water such that the substrate is completely covered.
- Water absorption is determined by removing the substrates from the water at prescribed times, blotting water from the surface, and weighing the blocks.
- a set of untreated control blocks can also be included, and the water absorption can then be reported as a percent exclusion as compared to the (average of) untreated controls. For instance, if an untreated cube absorbs 20% water by weight, and the treated cube absorbs 2% by weight, the water exclusion versus the untreated control would be 90%.
- a 3-neck round bottom flask was equipped with an overhead mechanical stirrer, thermometer, condenser, and pressure-compensated addition funnel which was connected on top of the condenser.
- VOC content of tetramethylcyclotetrasiloxane (purity >99%) was measured according to ASTM D5095 and found to be 84%. The VOC content of the fluid was therefore >1 00g/l.
- VOC content of pentamethylcyclopentasiloxane (purity -88%) was measured according to ASTM D5095 and found to be 68%. The VOC content of the fluid was therefore >1 00g/l.
- the comparative examples show that without removing unreacted alkene, isomerised alkene and unreacted volatile silicone hydrogen starting materials a VOC content of below 10Og/l is not obtained.
- the emulsion obtained had a VOC of ⁇ 0Og/l.
- Concrete blocks were treated with approx 200g/m 2 active of the above emulsions.
- the contact angle of the treated unwashed blocks was determined to be 95.4 degrees.
- the contact angle was again measured after washing the blocks resulting in a contact angle of 124.2 degrees.
- a low VOC emulsion was made according to the following procedure. 200 g of the siloxane copolymer of Example 2, 3.05 g of Brij L23 (72% active in water) and 2.25 g of Brij L4 were mixed in a stainless steel beaker with a magnetic stir bar. 294.71 g of water was added to the mixture and mixed with a bench top mixer equipped with a propeller and disperser blade. The content was further mixed using an Ultra Turrax(R) for 2 minutes at maximum speed to form a coarse emulsion. The coarse emulsion was passed three times through a homogenizer (SPX Corp. , Charlotte, NC) at a pressure of 12,500 psi. A white emulsion was arrived having an active siloxane content of 40% and a mono-modal particle size distribution with a median at 1 .049 microns as measured by a Malvern Mastersizer in the volume mode.
- SPX Corp. Charlotte, NC
- a low voc emulsion was made according to the following procedure. 160g of the siloxane of Example 2, 6.24g of Dow Corning(R) Q2-5247 Fluid and 2.00g of Dow Corning(R) 521 1 Superwetting Agent were mixed in a bottle using an Ultra Turrax(R) at maximum speed for one minutes. 234.08 g of deionized water was added to the mixture and mixed for an additional 4 minutes to arrive at a coarse emulsion. The coarse emulsion was passed through the same homogenizer as in Example 6 three times at a pressure of 10,500 psi with cooling in between passes. A white emulsion was arrived having an active siloxane content of 40% and monomodal particle size distribution with a median at 0.469 microns as determined with a Malvern Mastersizer in the volume mode.
- the above emulsion was applied to three concrete cubes (2 inches on each edge) at a rate equivalent to approximately 150 square feet of surface per gallon of treatment material, which is a common application rate for commercial penetrating water repellents.
- the treated cubes were then cured for 7 days RT before evaluating the resistance to water absorption by immersion testing. After 1 day of immersion, the average water exclusion, as compared to an untreated set of cubes, was 94.4%, and after seven days of immersion the average water exclusion was greater than 80%.
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Abstract
Description
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Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012312525A AU2012312525B2 (en) | 2011-09-19 | 2012-09-19 | Process of preparing a siloxane copolymer |
US14/345,743 US9701879B2 (en) | 2011-09-19 | 2012-09-19 | Process of preparing a siloxane copolymer |
CA2849266A CA2849266C (en) | 2011-09-19 | 2012-09-19 | Process of preparing a siloxane copolymer |
KR1020147009214A KR101963108B1 (en) | 2011-09-19 | 2012-09-19 | Process of preparing a siloxane copolymer |
CN201280045580.5A CN103827176B (en) | 2011-09-19 | 2012-09-19 | Prepare the method for silicone copolymers |
JP2014530958A JP2014531445A (en) | 2011-09-19 | 2012-09-19 | Process for preparing siloxane copolymers |
EP12769817.3A EP2758456B1 (en) | 2011-09-19 | 2012-09-19 | Process of preparing a siloxane copolymer |
US14/219,226 US9120961B2 (en) | 2011-09-19 | 2014-03-19 | Process of preparing a siloxane copolymer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201161536082P | 2011-09-19 | 2011-09-19 | |
US61/536,082 | 2011-09-19 |
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Cited By (2)
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EP2927291A1 (en) | 2014-04-03 | 2015-10-07 | Evonik Degussa GmbH | Low VOC dialkyl-functional alkoxysiloxanes, method and their use as hydrophobizing impregnating agent for mineral building materials |
US9701590B2 (en) | 2011-09-19 | 2017-07-11 | Dow Corning Corporation | Water repellent for concrete |
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US9701879B2 (en) | 2011-09-19 | 2017-07-11 | Dow Corning Corporation | Process of preparing a siloxane copolymer |
CN106316462A (en) * | 2016-08-22 | 2017-01-11 | 北京中德新亚建筑技术有限公司 | Weather-proof protecting agent special for airfield pavements and preparation method of weather-proof protecting agent |
WO2018098474A1 (en) * | 2016-11-28 | 2018-05-31 | 2G Protectants, Llc | Composition for treating porous substrates |
PL3645228T3 (en) | 2017-06-28 | 2024-04-02 | Gcp Applied Technologies Inc. | Early strength enhancing concrete admixure |
CN109942762B (en) * | 2019-02-21 | 2021-10-22 | 上海普信高分子材料有限公司 | Preparation method of surface treating agent with flame retardant property |
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CA2849266A1 (en) | 2013-03-28 |
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US9120961B2 (en) | 2015-09-01 |
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