CN1390224A - 硅氧烷化合物的稳定化方法 - Google Patents
硅氧烷化合物的稳定化方法 Download PDFInfo
- Publication number
- CN1390224A CN1390224A CN00815564A CN00815564A CN1390224A CN 1390224 A CN1390224 A CN 1390224A CN 00815564 A CN00815564 A CN 00815564A CN 00815564 A CN00815564 A CN 00815564A CN 1390224 A CN1390224 A CN 1390224A
- Authority
- CN
- China
- Prior art keywords
- solvent
- siloxane
- sorbent material
- acid
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- -1 siloxane compounds Chemical class 0.000 title claims description 37
- 230000006641 stabilisation Effects 0.000 title claims description 9
- 238000011105 stabilization Methods 0.000 title claims description 9
- 239000002904 solvent Substances 0.000 claims abstract description 49
- 238000005108 dry cleaning Methods 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 11
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 51
- 239000002594 sorbent Substances 0.000 claims description 33
- 239000002253 acid Substances 0.000 claims description 29
- 150000001875 compounds Chemical class 0.000 claims description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000002808 molecular sieve Substances 0.000 claims description 11
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 11
- 230000002378 acidificating effect Effects 0.000 claims description 8
- 239000004927 clay Substances 0.000 claims description 7
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 7
- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- PEJQKHLWXHKKGS-UHFFFAOYSA-N 2,2,4,4,6,6,8,8-octachloro-1,3,5,7-tetraza-2$l^{5},4$l^{5},6$l^{5},8$l^{5}-tetraphosphacycloocta-1,3,5,7-tetraene Chemical compound ClP1(Cl)=NP(Cl)(Cl)=NP(Cl)(Cl)=NP(Cl)(Cl)=N1 PEJQKHLWXHKKGS-UHFFFAOYSA-N 0.000 claims description 4
- YFCGDEUVHLPRCZ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-trimethylsilyloxysilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C YFCGDEUVHLPRCZ-UHFFFAOYSA-N 0.000 claims description 4
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- FBZANXDWQAVSTQ-UHFFFAOYSA-N dodecamethylpentasiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C FBZANXDWQAVSTQ-UHFFFAOYSA-N 0.000 claims description 3
- 229940087203 dodecamethylpentasiloxane Drugs 0.000 claims description 3
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 229910004283 SiO 4 Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- IXSPLXSQNNZJJU-UHFFFAOYSA-N trimethyl(silyloxy)silane Chemical compound C[Si](C)(C)O[SiH3] IXSPLXSQNNZJJU-UHFFFAOYSA-N 0.000 claims description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 8
- 229920001296 polysiloxane Polymers 0.000 abstract description 8
- 239000003463 adsorbent Substances 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 4
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 4
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- QABCGOSYZHCPGN-UHFFFAOYSA-N chloro(dimethyl)silicon Chemical compound C[Si](C)Cl QABCGOSYZHCPGN-UHFFFAOYSA-N 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MVEOHWRUBFWKJY-UHFFFAOYSA-N 7-hydroxynaphthalene-2-sulfonic acid Chemical compound C1=CC(S(O)(=O)=O)=CC2=CC(O)=CC=C21 MVEOHWRUBFWKJY-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- IUMSDRXLFWAGNT-UHFFFAOYSA-N Dodecamethylcyclohexasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 IUMSDRXLFWAGNT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- ADANNTOYRVPQLJ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy-dimethylsilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C ADANNTOYRVPQLJ-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- LPTWEDZIPSKWDG-UHFFFAOYSA-N benzenesulfonic acid;dodecane Chemical compound OS(=O)(=O)C1=CC=CC=C1.CCCCCCCCCCCC LPTWEDZIPSKWDG-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
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229910000286 fullers earth Inorganic materials 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000005055 methyl trichlorosilane Substances 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 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
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013520 petroleum-based product Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 229940008424 tetradecamethylhexasiloxane Drugs 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000005051 trimethylchlorosilane Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/20—Purification, separation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/21—Cyclic compounds having at least one ring containing silicon, but no carbon in the ring
-
- 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
- C08G77/32—Post-polymerisation treatment
- C08G77/34—Purification
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/02—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents
- D06L1/10—Regeneration of used chemical baths
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detergent Compositions (AREA)
- Silicon Polymers (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明公开了含杂质的硅氧烷干洗溶剂的稳定化方法,包括:将硅氧烷溶剂与吸附剂、中和剂或它们的组合体相接触,使溶剂纯化,并防止再平衡作用和聚合作用,然后分离出硅氧烷溶剂。
Description
相关申请的交叉参考
本申请是系列号为09/438,069、申请日为1999.11.10的美国专利申请的部分继续申请。
技术领域
本申请涉及一种方法,更具体地讲,涉及一种含酸性杂质的硅氧烷干洗溶剂(dry cleaning solvent)的稳定化方法。
技术背景
当前的干洗技术采用全氯乙烷(“PERC”)或石油基物料作为洗涤溶剂。PERC苦于毒性和气味问题,而石油基产品在洗涤服装时不如PERC有效。作为PERC的替代物,挥发性的硅氧烷被引入干洗业,但是,需要将硅氧烷溶剂稳定化,以防止不良的环状硅氧烷(D4)的形成和聚合。
先前已报道了有机聚硅氧烷的纯化方法,但对于某些环状硅氧烷(D5)的纯化,却未见报道。利用金属元素纯化有机聚硅氧烷的方法已有报道(参见US 5,245,067)。其它专利公开了聚醚聚硅氧烷的纯化方法,将其与含水酸相接触,并除去形成的臭味物质(参见US5,118,764),或者将其与与氢和氢化催化剂反应(参见US5,225,509)。已有人将六甲基二硅醚纯化,将其用缩合催化剂连续处理、用水洗涤、进行相分离、蒸馏硅氧烷、用酸性粘土处理,然后用活性炭处理(参见US 4,774,346)。硅氧烷也可以与蒸汽接触并蒸馏出杂质而得以纯化(参见EP 543665)。利用活性炭脱臭的方法已有报道,活性炭通过甲硅烷醇键被固定有功能基(参见US 5,238,899)。最后,已报道的纯化硅油的方法是干燥剂和吸附剂加入到硅油中,并将低压水蒸汽惰性气体流经该体系(参见US 4,661,612)。
这就需要将硅氧烷稳定化,对应用于干洗的含有酸性杂质的挥发性硅氧烷,避免发生再平衡作用和聚合作用。
发明概要
第一点,本发明涉及硅氧烷干洗溶剂的稳定化方法,该溶剂可以含有能够引起环状硅氧烷的生成的不良的酸性杂质,它包括:将该硅氧烷溶剂与吸附剂、中和剂或其组合体(combination)相接触,分离出硅氧烷溶剂。
本发明方法能有效地防止硅氧烷溶剂中某些不良环状硅氧烷(即,D4)的生成。
本文中使用的术语“D4”、“D5”和“D6”是指具有式-(R2SiO)x-的环状硅氧烷,其中x为4、5或6(即,D5是十甲基环戊硅氧烷)。发明详述
优选地,本发明方法的第一个优选实施方案包括:将硅氧烷干洗溶剂与吸附剂、中和剂或其组合体接触,所述溶剂中可含有不良的酸性杂质,能够引起环状硅氧烷的生成;然后分离出硅氧烷溶剂。硅氧烷干洗溶剂优选是挥发性的直链的、支链的、环状的或其组合的硅氧烷。
对再平衡没有采取避免措施时,存在于硅氧烷中的这些杂质的含量最多可以达到约0.1重量份,在干洗操作过程中可能将杂质引入硅氧烷溶剂,如果不将其除去,可能会发生溶剂的再平衡作用和聚合作用,形成不良的环状化合物。
适合作为吸附剂的化合物是能有效地除去酸性杂质,防止在硅氧烷溶剂中发生胶凝作用以及不良环状化合物的生成的那些。适用的吸附剂例子包括,但不限于炭黑、硅胶、C盐(celite)、漂白土(fullersearth)、脱色炭、费尔特洛尔白土(filtrol)、分子筛、硅藻土、硫酸镁、cob粉、粘土和矾土。在优选的实施方案中,吸附剂选自硅胶、硅藻土、漂白土、酸性粘土、4A分子筛、13X分子筛和脱色炭。
作为本发明的直链或支链挥发性硅氧烷溶剂,适当的化合物是这样的化合物:含有聚硅氧烷结构,它包括2-20个硅原子。优选地,直链或支链挥发性硅氧烷是具有相当挥发性的物质,例如,在760毫米汞柱(″mm Hg″)压力下,具有约低于300℃的沸点。
在优选的实施方案中,直链的或支链的、挥发性的硅氧烷包括一种或多种结构式(I)化合物:
M2+y+2zDxTyQz (I)其中:M是R1 3SiO1/2;D是R2 2SiO2/2;T是R3SiO3/2;以及Q是SiO4/2;R1、R2和R3各自独立地是单价烃基,以及x和y各自是整数,其中0≤x≤10,0≤y≤10和0≤z≤10。
适当的单价烃基包括开链烃基、单价脂环烃基、单价芳族烃基。优选的单价烃基是每个基团含有1-6个碳原子的单价烷基,例如甲基、乙基、丙基、异丙基、正丁基、异丁基、仲丁基、叔丁基、戊基、己基,优选甲基;单价芳基如苯基、2,4,6-三甲基苯基、2-异丙基甲基苯基、1-并环戊二烯基(pentalenyl)、萘基、蒽基,优选苯基;单价芳烷基如苯乙基、苯丙基、2-(1-萘基)乙基、优选苯丙基、苯氧基丙基、联苯氧基丙基。
在优选的实施方案中,单价烃基是每个基团含有1-6个碳原子的单价烷基,最优选甲基。
在优选的实施方案中,直链或支链的挥发性硅氧烷包括一种或多种以下化合物:六甲基二硅醚、八甲基三硅氧烷、十甲基四硅氧烷、十二甲基戊硅氧烷、十四甲基六硅氧烷或十六甲基七硅氧烷,或甲基三(三甲基甲硅烷氧基)硅烷(methyltris(trimethylsiloxy)silane)。在更为优选的实施方案中,本发明的直链或支链的挥发性硅氧烷包括八甲基三硅氧烷、十甲基四硅氧烷、十二甲基戊硅氧烷或甲基三(三甲基甲硅烷氧基)硅烷。在特别优选的实施方案中,本发明组合物的硅氧烷组分基本上由十甲基四硅氧烷组成。
适当的直链或支链型挥发性硅氧烷按照已知方法制备,例如,将四氯硅烷、甲基三氯硅烷、二甲基二氯硅烷、三甲基氯硅烷中的一种或多种水解和缩合,或者从六甲基二硅醚和八甲环四硅氧烷等类似物质的平衡混合物中分离出所需要的组分;也可以市购得到。
作为本发明的环状硅氧烷组分,适当的化合物是这样的化合物:含有聚硅氧烷环结构,环中包括2-20个硅原子。优选地,直链型挥发性硅氧烷和环状硅氧烷均为具有相当挥发性的物质,例如,在760毫米汞柱(″mm Hg″)压力下,具有约低于300℃的沸点。
在优选实施方案中,环状硅氧烷组分包括一种或多种结构式(II)的化合物:其中:R5、R6、R7和R8各自独立地是单价烃基;而a和b各自是整数,其中0≤a≤10,0≤b≤10,前提条件是3≤(a+b)≤10。
在优选实施方案中,环状硅氧烷包括一种或多种下面的化合物:八甲基环四硅氧烷、十甲基环戊硅氧烷、十二甲基环己硅氧烷、十四甲基环庚硅氧烷。在更为优选的实施方案中,本发明的环状硅氧烷包括八甲基环四硅氧烷或十甲基环戊硅氧烷。在特别优选的实施方案中,本发明组合物的环状硅氧烷组分基本上由十甲基环戊硅氧烷组成。
适宜的环状硅氧烷根据已知方法制备,例如,二甲基二氯硅烷的水解和缩合;也可以市购获得。
据信可用于本发明的不含有环状硅氧烷组分的那些干洗溶剂比含有环状硅氧烷组分的溶剂更为稳定,其理由是,已知在酸性和碱性条件下,环状硅氧烷会开环和聚合。
在本发明方法的第一个实施方案中,大约100重量份(″pbw″)的硅氧烷溶剂可以装载多至0.1,优选多至0.01,更优选多至0.001pbw的酸性杂质,将其于约10-约80℃,优选约20-约60℃的温度与多达约100,优选多达约50,更优选多达约10pbw的吸附剂、中和剂或其组合体接触约0.0025-约6小时,优选约0.01-约2小时,更优选约0.1-约0.5小时。硅氧烷溶剂与吸附剂接触适当时间,得到纯化后,可以再循环到干洗装置中。本发明方法能有效地降低硅氧烷溶剂中的杂质浓度。
在本发明方法的第二个实施方案中,按照本发明的方法处理干洗液。
本发明方法还包括干洗方法,它包括以下步骤:将物件与硅氧烷溶剂接触,并移去硅氧烷溶剂,然后,处理该被移去的硅氧烷溶剂,即,将硅氧烷溶剂与吸附剂、中和剂或它们的组合体接触,并将硅氧烷溶剂与吸附剂分离,再将处理过的硅氧烷溶剂重新用于干洗过程。
下面的实施例进一步阐明本发明的方法,它们仅仅是说明性的,权利要求不应当解释为这些实施例所限定的范围。
实施例1
十甲基环戊硅氧烷(D5)被用作干洗溶剂,将其与一种酸(LPNC)混合,制成含有百万分之200(″ppm″)LPNC的储备液。将等分的储备液加热至100℃,测定混合物是否发生了再平衡和聚合作用(D4和D6浓度增加,同时粘度也增加)。对照试验的结果如下面的表1所示。在不加入酸的情况下,D5在100℃24小时是稳定的。在200ppm LPNC的存在下,粘度在7小时里迅速增加,以至于组合物无法进行测定。
实施例使用的吸附剂
实施例使用的酸
表1 D5含LPNC时的聚合作用与再平衡
*粘度太高,无法测定。
吸附剂 | 吸附剂种类 |
A | 硅藻土(Celite545) |
B | 4A分子筛 |
C | 粉状13X分子筛 |
D | 13X分子筛 |
E | 硅胶60-200目 |
F | 酸性粘土(FiltrolF-25) |
G | 漂白土 |
H | 粉状脱色炭(Norit) |
酸 | 酸的种类 |
T | DDBSA(十二烷基苯磺酸) |
U | LPNC(线型氯化磷腈)(linear phosphonitrilic chloride) |
V | 氢氯酸 |
W | 对甲苯磺酸 |
X | 乙酸 |
Y | 磷酸 |
Z | 硫酸 |
实施例# | 温度(℃) | LPNC(ppm) | Rxn时间(h) | %D4 | %D5 | %D6 | Rxn时间(h) | % D4 | % D5 | % D6 | 粘度增值 |
对照 | 100 | 无 | 0 | <0.2 | 99.46 | 0.47 | 24 | <0.2 | 99.46 | 0.47 | 无 |
1 | 100 | 200 | 7 | - | - | - | 24 | - | - | - | 凝胶* |
实施例2
制备含有200ppm酸(LPNC)的D5储备液,然后用不同的吸附剂和中和剂进行处理。将大约0.1克的吸附剂加入到10克溶液中(1%装载量(loading)),并振荡1分钟,然后移去吸附剂。将溶液加热至100℃4小时,测定环状化合物的浓度;继续加热直至24小时,再次测定环状化合物的浓度。表2列出了环状化合物生成的结果。表2 1%吸附剂接触1分钟时间
实施例# | 吸附剂 | Rxn时间(h) | % D4 | % D5 | % D6 | Rxn时间(h) | % D4 | % D5 | % D6 |
2 | H | 4 | <0.1 | 99.45 | 0.54 | 24 | <0.1 | 99.45 | 0.55 |
3 | E | 4 | <0.1 | 99.45 | 0.55 | 24 | <0.1 | 99.45 | 0.55 |
4 | C | 4 | <0.1 | 99.44 | 0.56 | 24 | <0.1 | 99.46 | 0.54 |
5 | I | 4 | <0.1 | 99.45 | 0.55 | 24 | <0.1 | 99.35 | 0.55 |
6 | F | 2 | <0.1 | 99.46 | 0.54 | 24 | <0.1 | 99.43 | 0.58 |
表2显示,采用低装载量(1%)和短接触时间的情况下,和相同浓度的酸处理过的对照样比较,硅胶、炭黑、漂白土、粉状13X分子筛和酸性粘土均能有效地防止聚合作用的发生。
实施例3
表3和4表示酸的种类和酸的装载对D5平衡的影响。
表3 120℃下D5中的酸为1000ppm
实施例# | 酸 | Rxn时间(h) | % D4 | % D5 | % D6 | Rxn时间(h) | % D4 | % D5 | % D6 |
7 | V | 4 | <0.1 | 99.52 | 0.48 | 24 | <0.1 | 99.39 | 0.61 |
8 | W | 4 | 0.56 | 99.84 | 0.59 | 24 | 1.93 | 97.2 | 1.05 |
9 | X | 4 | <0.1 | 99.51 | 0.49 | 24 | <0.1 | 99.52 | 0.48 |
10 | T | 4 | 10.89 | 80.53 | 6.27 | 24 | 15.12 | 74 | 7.67 |
表4 D5中酸为1000ppm(在120℃下,用1%的吸附剂处理1分钟后)
实施例# | 吸附剂 | 酸 | Rxn时间(h) | % D4 | % D5 | % D6 | Rxn时间(h) | % D4 | % D5 | % D6 |
11 | 无 | W | 4 | 0.70 | 98.31 | 0.96 | 24 | 1.25 | 98.37 | 1.14 |
12 | H | W | 4 | 0 | 99.26 | 0.74 | 24 | 0 | 99.32 | 0.68 |
13 | F | W | 4 | 0 | 99.33 | 0.67 | 24 | 0 | 99.05 | 0.95 |
14 | D | W | 4 | 0 | 99.25 | 0.75 | 24 | 0 | 99.55 | 0.45 |
15 | 无 | T | 4 | 1.08 | 90.89 | 3.28 | 24 | 2.96 | 93.05 | 2.05 |
16 | H | T | 4 | 0 | 99.26 | 0.74 | 24 | 0 | 99.30 | 0.70 |
17 | F | T | 4 | 0 | 99.23 | 0.76 | 24 | 0 | 99.26 | 0.74 |
18 | D | T | 4 | 0 | 100 | 0 | 24 | 0.04 | 98.52 | 1.47 |
19 | 无 | U | 4 | 凝胶 | 凝胶 | 凝胶 | 24 | 凝胶 | 凝胶 | 凝胶 |
20 | H | U | 4 | 0 | 99.33 | 0.66 | 24 | 0 | 99.22 | 0.78 |
21 | F | U | 4 | 0 | 99.32 | 0.68 | 24 | 0 | 99.24 | 0.76 |
22 | D | U | 4 | 0.73 | 97.03 | 0.92 | 24 | 0.67 | 97.92 | 0.92 |
对许多酸而言,要观察到在提高的温度下与D5的反应,高装载量是必要的。采用含有酸的直链型硅氧烷(MD2M)进行了相同的试验和对照,结果如表5-7所示。表5 在100℃下MD2M中酸为80ppm
表6 在120℃下MD2M中酸为1000ppm
实施例# | 酸 | Rxn时间(h) | %MM | %MDM | %MD2M | %MD3M | Rxn时间(h) | %MM | %MDM | %MD2M | %MD3M |
23 | 对照 | 4 | 0 | 0 | 99.9 | 0 | 24 | 0 | 0 | 99.9 | 0 |
24 | U | 4 | 17.08 | 18.58 | 16.11 | 12.8 | 24 | 7.74 | 6.69 | 11.57 | 13.1 |
25 | V | 4 | 0 | 0 | 99.9 | 0 | 24 | 0 | 0 | 99.9 | 0 |
26 | W | 4 | 0 | 0 | 99.9 | 0 | 24 | 0 | 0 | 99.9 | 0 |
27 | X | 4 | 0 | 0 | 99.9 | 0 | 24 | 0 | 0 | 99.9 | 0 |
28 | Y | 4 | 0 | 0 | 99.9 | 0 | 24 | 0 | 0 | 99.9 | 0 |
29 | Z | 4 | 0 | 0 | 99.9 | 0 | 24 | 0 | 0 | 99.9 | 0 |
实施例# | 酸 | Rxn时间(h) | %MM | %MDM | %MD2M | %MD3M | Rxn时间(h) | %MM | %MDM | %MD2M | %MD3M |
30 | T | 4 | 11.16 | 15.02 | 41.45 | 12.46 | 24 | 13.44 | 16.52 | 36.11 | 13.5 |
31 | W | 4 | 0 | 0 | 99.9 | 0 | 24 | 1.3 | .82 | 97.03 | .44 |
再次看出,催化MD2M的再分配,高浓度的酸是必要的。
采用多种不同的试剂处理,可以使得酸污染物成为惰性的或低活性的,如表7所示。表7 在100℃、MD2M中LPNC为200ppm浓度下,
用1%吸附剂接触1分钟
实施例# | 吸附剂 | Rxn时间(h) | %MM | %MDM | %MD2M | %MD3M | Rxn时间(h) | %MM | %MDM | %MD2M | %MD3M |
32 | H | 4 | <0.1 | 0 | 99.01 | .89 | 24 | 0 | 0 | 98.37 | 1.63 |
33 | E | 4 | <0.1 | 0 | 99.47 | .43 | 24 | 1.5 | .72 | 96.12 | .7 |
34 | C | 4 | <0.1 | 0 | 99.57 | .33 | 24 | 0 | 0 | 98.03 | .29 |
35 | D | 4 | 20.51 | 21.7 | 17.65 | 13.74 | 24 | 12.98 | 19.28 | 17.74 | 15.3 |
36 | B | 4 | 10.28 | 15.49 | 19.27 | 16.66 | 24 | 21.75 | 22 | 17.74 | 13.68 |
37 | G | 4 | <0.1 | 0 | 98.90 | 0 | 24 | 0 | 0 | 98.9 | 0 |
38 | F | 4 | <0.1 | 0 | 99.60 | .296 | 24 | 0 | 0 | 99.22 | 0 |
39 | A | 4 | 21.33 | 21.49 | 17.65 | 13.94 | 24 | 15.21 | 18.64 | 15.74 | 12.58 |
本发明方法能够有效地降低硅氧烷溶剂中的酸杂质浓度。
Claims (16)
1.一种硅氧烷干洗溶剂的稳定化方法,该溶剂可以含有不良酸性杂质,能够引起环状硅氧烷的形成,该方法包括:将硅氧烷干洗溶剂与吸附剂、中和剂或它们的组合体相接触,并将该硅氧烷溶剂与吸附剂分离。
2.权利要求1的方法,其中每100重量份的硅氧烷溶剂,吸附剂、中和剂或它们的组合体的用量多至100重量份。
3.权利要求1的方法,其中溶剂与吸附剂、中和剂或它们的组合体接触约0.0025-约6小时。
4.权利要求1的方法,其中溶剂与吸附剂、中和剂或它们的组合体接触的温度为约10-约80℃。
5.权利要求1的方法,其中所用的吸附剂选自硅胶、硅藻土、漂白土、酸性粘土、4A分子筛、13X分子筛和脱色炭。
6.权利要求1的方法,其中的溶剂是直链或支链的硅氧烷,包括一种或多种以下结构式的化合物:
M2+y+2zDxTyQz其中:M是R1 3SiO1/2;D是R2 2SiO2/2;T是R3SiO3/2;以及Q是SiO4/2;R1、R2和R3各自独立地是单价烃基,以及x和y各自是整数,其中0≤x≤10,0≤y≤10和0≤z≤10。
7.权利要求6的方法,其中本发明的直链或支链的挥发性硅氧烷包括八甲基三硅氧烷、十甲基四硅氧烷、十二甲基戊硅氧烷或甲基三(三甲基甲硅烷氧基)硅烷。
8.权利要求1的方法,其中硅氧烷是环状硅氧烷,包括一种或多种以下结构式的化合物:其中:R5、R6、R7和R8各自独立地是单价烃基;而a和b各自是整数,其中0≤a≤10,0≤b≤10,前提条件是3≤(a+b)≤10。
9.权利要求8的方法,其中的环状硅氧烷是八甲基环四硅氧烷或十甲基环戊硅氧烷。
10.权利要求1的方法,其中,从溶剂中除去的酸性杂质是线型氯化磷腈、硫酸、氢氯酸、甲磺酸、十二烷基苯磺酸、对甲苯磺酸、乙酸、硫酸或硫酸,或它们的组合体。
11.按照权利要求1方法处理的硅氧烷干洗液。
12.用于权利要求1方法的吸附剂,该吸附剂包含从所述溶剂中除去的杂质,这些杂质是线型氯化磷腈、硫酸、氢氯酸、甲磺酸、十二烷基苯磺酸、对甲苯磺酸、乙酸、硫酸或硫酸,或它们的组合体。
13.一种干洗方法,包括:
(a)将物品与硅氧烷溶剂接触;
(b)移去所述硅氧烷溶剂;
(c)将移出的硅氧烷溶剂与吸附剂、中和剂或它们的组合体相接触;和
(d)将硅氧烷溶剂与吸附剂分离。
14.权利要求13的方法,进一步包括,在步骤(a)重新使用处理过的硅氧烷溶剂。
15.权利要求13的方法,其中所用的吸附剂选自硅胶、硅藻土、漂白土、酸性粘土、4A分子筛、13X分子筛和脱色炭。
16.权利要求13的方法,其中,干洗过程包括多个含步骤(a)和(b)的干洗循环,以及多个含步骤(c)和(d)的稳定化循环;其中,对于每个稳定化循环,干洗循环重复一次或多次。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/438,069 | 1999-11-10 | ||
US09/438,069 US20020000009A1 (en) | 1999-11-10 | 1999-11-10 | Process for stabilization of dry cleaning solutions |
US54764500A | 2000-04-12 | 2000-04-12 | |
US09/547,645 | 2000-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1390224A true CN1390224A (zh) | 2003-01-08 |
Family
ID=27031534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN00815564A Pending CN1390224A (zh) | 1999-11-10 | 2000-10-26 | 硅氧烷化合物的稳定化方法 |
Country Status (19)
Country | Link |
---|---|
EP (1) | EP1230247B1 (zh) |
JP (1) | JP2003514076A (zh) |
KR (1) | KR20020063569A (zh) |
CN (1) | CN1390224A (zh) |
AR (1) | AR026302A1 (zh) |
AT (1) | ATE257482T1 (zh) |
AU (1) | AU1234401A (zh) |
BR (1) | BR0015476A (zh) |
DE (1) | DE60007657T2 (zh) |
DK (1) | DK1230247T3 (zh) |
EG (1) | EG22601A (zh) |
ES (1) | ES2211640T3 (zh) |
HK (1) | HK1052357A1 (zh) |
MX (1) | MXPA02004706A (zh) |
PT (1) | PT1230247E (zh) |
RU (1) | RU2002115288A (zh) |
TR (1) | TR200201276T2 (zh) |
TW (1) | TW593327B (zh) |
WO (1) | WO2001034613A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102443020A (zh) * | 2011-09-21 | 2012-05-09 | 乐山科立鑫化工有限责任公司 | 烷氧基硅烷低聚物的脱色方法 |
CN105061490A (zh) * | 2015-08-19 | 2015-11-18 | 湖北兴瑞化工有限公司 | 一种降低有机硅dmc中杂质含量的方法 |
CN108745295A (zh) * | 2018-06-22 | 2018-11-06 | 河北师范大学 | 一种硅氧烷吸附材料及其应用 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6939837B2 (en) | 2000-06-05 | 2005-09-06 | Procter & Gamble Company | Non-immersive method for treating or cleaning fabrics using a siloxane lipophilic fluid |
US6706076B2 (en) | 2000-06-05 | 2004-03-16 | Procter & Gamble Company | Process for separating lipophilic fluid containing emulsions with electric coalescence |
US6706677B2 (en) | 2000-06-05 | 2004-03-16 | Procter & Gamble Company | Bleaching in conjunction with a lipophilic fluid cleaning regimen |
US6828292B2 (en) | 2000-06-05 | 2004-12-07 | Procter & Gamble Company | Domestic fabric article refreshment in integrated cleaning and treatment processes |
US6564591B2 (en) | 2000-07-21 | 2003-05-20 | Procter & Gamble Company | Methods and apparatus for particulate removal from fabrics |
US6914040B2 (en) | 2001-05-04 | 2005-07-05 | Procter & Gamble Company | Process for treating a lipophilic fluid in the form of a siloxane emulsion |
WO2003022401A2 (en) | 2001-09-10 | 2003-03-20 | The Procter & Gamble Company | Multifunctional filter |
US7084099B2 (en) | 2001-09-10 | 2006-08-01 | Procter & Gamble Company | Method for processing a contaminant-containing lipophilic fluid |
US7276162B2 (en) | 2001-09-10 | 2007-10-02 | The Procter & Gamble Co. | Removal of contaminants from a lipophilic fluid |
AR036777A1 (es) | 2001-09-10 | 2004-10-06 | Procter & Gamble | Filtro para remover agua y/o surfactantes de un fluido lipofilo |
US7297277B2 (en) | 2003-06-27 | 2007-11-20 | The Procter & Gamble Company | Method for purifying a dry cleaning solvent |
US7300594B2 (en) | 2003-06-27 | 2007-11-27 | The Procter & Gamble Company | Process for purifying a lipophilic fluid by modifying the contaminants |
US7300593B2 (en) | 2003-06-27 | 2007-11-27 | The Procter & Gamble Company | Process for purifying a lipophilic fluid |
US7300468B2 (en) | 2003-10-31 | 2007-11-27 | Whirlpool Patents Company | Multifunctioning method utilizing a two phase non-aqueous extraction process |
ATE404612T1 (de) * | 2005-01-13 | 2008-08-15 | Dow Corning | Verfahren zur neutralisierung von polysiloxan- hydrolysaten |
EP2123822A1 (en) * | 2008-05-14 | 2009-11-25 | Süd-Chemie Ag | Use of adsorbents for the purification of dry cleaning solvents |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3755152A (en) * | 1970-09-14 | 1973-08-28 | Ouvoe Chem Ind Inc | Removing contaminants from organic materials |
US4156689A (en) * | 1978-02-13 | 1979-05-29 | General Electric Company | Purification of hydrosilanes and siloxanes |
DE3508219A1 (de) * | 1984-11-13 | 1986-09-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zur reinigung von siliconoel |
DE3739711A1 (de) * | 1987-11-24 | 1989-06-08 | Kreussler Chem Fab | Verwendung von polydialkylcyclosiloxanen als loesemittel fuer die chemischreinigung |
-
2000
- 2000-10-26 DK DK00973896T patent/DK1230247T3/da active
- 2000-10-26 WO PCT/US2000/029537 patent/WO2001034613A1/en active IP Right Grant
- 2000-10-26 DE DE60007657T patent/DE60007657T2/de not_active Expired - Fee Related
- 2000-10-26 EP EP00973896A patent/EP1230247B1/en not_active Expired - Lifetime
- 2000-10-26 PT PT00973896T patent/PT1230247E/pt unknown
- 2000-10-26 CN CN00815564A patent/CN1390224A/zh active Pending
- 2000-10-26 BR BR0015476-8A patent/BR0015476A/pt not_active IP Right Cessation
- 2000-10-26 MX MXPA02004706A patent/MXPA02004706A/es unknown
- 2000-10-26 AU AU12344/01A patent/AU1234401A/en not_active Abandoned
- 2000-10-26 TR TR2002/01276T patent/TR200201276T2/xx unknown
- 2000-10-26 ES ES00973896T patent/ES2211640T3/es not_active Expired - Lifetime
- 2000-10-26 RU RU2002115288/04A patent/RU2002115288A/ru not_active Application Discontinuation
- 2000-10-26 JP JP2001537326A patent/JP2003514076A/ja not_active Withdrawn
- 2000-10-26 KR KR1020027005981A patent/KR20020063569A/ko not_active Application Discontinuation
- 2000-10-26 AT AT00973896T patent/ATE257482T1/de not_active IP Right Cessation
- 2000-10-30 AR ARP000105725A patent/AR026302A1/es not_active Application Discontinuation
- 2000-11-07 EG EG20001398A patent/EG22601A/xx active
- 2000-11-08 TW TW089123596A patent/TW593327B/zh not_active IP Right Cessation
-
2003
- 2003-06-30 HK HK03104656.4A patent/HK1052357A1/zh unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102443020A (zh) * | 2011-09-21 | 2012-05-09 | 乐山科立鑫化工有限责任公司 | 烷氧基硅烷低聚物的脱色方法 |
CN102443020B (zh) * | 2011-09-21 | 2014-08-27 | 乐山科立鑫化工有限责任公司 | 烷氧基硅烷低聚物的脱色方法 |
CN105061490A (zh) * | 2015-08-19 | 2015-11-18 | 湖北兴瑞化工有限公司 | 一种降低有机硅dmc中杂质含量的方法 |
CN105061490B (zh) * | 2015-08-19 | 2017-10-27 | 湖北兴瑞化工有限公司 | 一种降低有机硅dmc中杂质含量的方法 |
CN108745295A (zh) * | 2018-06-22 | 2018-11-06 | 河北师范大学 | 一种硅氧烷吸附材料及其应用 |
CN108745295B (zh) * | 2018-06-22 | 2021-03-26 | 河北师范大学 | 一种硅氧烷吸附材料及其应用 |
Also Published As
Publication number | Publication date |
---|---|
DK1230247T3 (da) | 2004-05-10 |
DE60007657T2 (de) | 2004-11-11 |
MXPA02004706A (es) | 2002-09-02 |
RU2002115288A (ru) | 2003-12-27 |
ATE257482T1 (de) | 2004-01-15 |
BR0015476A (pt) | 2002-10-08 |
JP2003514076A (ja) | 2003-04-15 |
ES2211640T3 (es) | 2004-07-16 |
PT1230247E (pt) | 2004-04-30 |
EP1230247A1 (en) | 2002-08-14 |
TR200201276T2 (tr) | 2002-09-23 |
TW593327B (en) | 2004-06-21 |
WO2001034613A1 (en) | 2001-05-17 |
HK1052357A1 (zh) | 2003-09-11 |
AR026302A1 (es) | 2003-02-05 |
DE60007657D1 (de) | 2004-02-12 |
AU1234401A (en) | 2001-06-06 |
EG22601A (en) | 2003-04-30 |
EP1230247B1 (en) | 2004-01-07 |
KR20020063569A (ko) | 2002-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1390224A (zh) | 硅氧烷化合物的稳定化方法 | |
US6312476B1 (en) | Process for removal of odors from silicones | |
US6368359B1 (en) | Process for stabilization of dry cleaning solutions | |
CN1556881A (zh) | 汽相硅氧烷干洗方法 | |
JP2885295B2 (ja) | シロキサン類の精製方法 | |
EP0382366A2 (en) | Process for the production of organosilicon compounds | |
KR20000047996A (ko) | 실록산의 중합 방법 | |
FR2707654A1 (fr) | Procédé de préparation de fluides de polydiorganosiloxanes à terminaison triorganosiloxy à faible teneur en silanol. | |
EP1242430B1 (en) | Dry cleaning process | |
EP0129318B1 (en) | Neutralization of alkali metal catalysts in organopolysiloxanes | |
EP3036272B1 (en) | Catalyst for synthesis of siloxanes | |
EP0592149B1 (en) | Method for removal of ionic chloride from hydroxyl-terminated siloxanes | |
CN1056862C (zh) | 稳定有机聚硅氧烷的方法 | |
US20020000009A1 (en) | Process for stabilization of dry cleaning solutions | |
JP3017199B2 (ja) | オルガノポリシロキサンの粘度を変化させるための方法 | |
JP3862007B2 (ja) | スルホン化樹脂触媒の再活性化方法 | |
CN101283023A (zh) | 用于制备oh封端的有机氢聚硅氧烷的方法 | |
JPH04272928A (ja) | 高分子量オルガノポリシロキサンの製造方法 | |
AU2005232258A1 (en) | Process for removal of odors from silicones | |
JPS6258619B2 (zh) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1052357 Country of ref document: HK |