CN113336794A - 一种新型糖类生物基环状磷/膦酸酯及其制备方法和应用 - Google Patents
一种新型糖类生物基环状磷/膦酸酯及其制备方法和应用 Download PDFInfo
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 26
- 239000011574 phosphorus Substances 0.000 title claims abstract description 26
- 125000004122 cyclic group Chemical group 0.000 title claims abstract description 22
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 150000001720 carbohydrates Chemical class 0.000 title claims abstract description 13
- 239000003063 flame retardant Substances 0.000 claims abstract description 45
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 37
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- -1 phosphonate ester Chemical class 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- WVPKAWVFTPWPDB-UHFFFAOYSA-M dichlorophosphinate Chemical compound [O-]P(Cl)(Cl)=O WVPKAWVFTPWPDB-UHFFFAOYSA-M 0.000 claims abstract description 6
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 claims abstract description 5
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 claims abstract description 5
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012346 acetyl chloride Substances 0.000 claims abstract description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 229940125782 compound 2 Drugs 0.000 claims description 13
- 238000004809 thin layer chromatography Methods 0.000 claims description 11
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
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- 229910052740 iodine Inorganic materials 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- TXFOLHZMICYNRM-UHFFFAOYSA-N dichlorophosphoryloxybenzene Chemical group ClP(Cl)(=O)OC1=CC=CC=C1 TXFOLHZMICYNRM-UHFFFAOYSA-N 0.000 claims description 5
- 125000006273 (C1-C3) alkyl group Chemical group 0.000 claims description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 4
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 4
- 150000007529 inorganic bases Chemical class 0.000 claims description 4
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 125000005499 phosphonyl group Chemical group 0.000 claims description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- IBDMRHDXAQZJAP-UHFFFAOYSA-N dichlorophosphorylbenzene Chemical group ClP(Cl)(=O)C1=CC=CC=C1 IBDMRHDXAQZJAP-UHFFFAOYSA-N 0.000 claims description 3
- SNVCRNWSNUUGEA-UHFFFAOYSA-N dichlorophosphoryloxymethane Chemical compound COP(Cl)(Cl)=O SNVCRNWSNUUGEA-UHFFFAOYSA-N 0.000 claims description 3
- SCLFRABIDYGTAZ-UHFFFAOYSA-N methylphosphonic acid dichloride Chemical compound CP(Cl)(Cl)=O SCLFRABIDYGTAZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012074 organic phase Substances 0.000 claims description 3
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 claims description 2
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 claims description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000012043 crude product Substances 0.000 claims description 2
- 125000004185 ester group Chemical group 0.000 claims description 2
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M lithium hydroxide Inorganic materials [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 2
- 125000001476 phosphono group Chemical group [H]OP(*)(=O)O[H] 0.000 claims description 2
- 239000011736 potassium bicarbonate Substances 0.000 claims description 2
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- RPDAUEIUDPHABB-UHFFFAOYSA-N potassium ethoxide Chemical compound [K+].CC[O-] RPDAUEIUDPHABB-UHFFFAOYSA-N 0.000 claims description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 2
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 150000003014 phosphoric acid esters Chemical class 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 3
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- 239000013067 intermediate product Substances 0.000 abstract 1
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- HHDUMDVQUCBCEY-UHFFFAOYSA-N 4-[10,15,20-tris(4-carboxyphenyl)-21,23-dihydroporphyrin-5-yl]benzoic acid Chemical compound OC(=O)c1ccc(cc1)-c1c2ccc(n2)c(-c2ccc(cc2)C(O)=O)c2ccc([nH]2)c(-c2ccc(cc2)C(O)=O)c2ccc(n2)c(-c2ccc(cc2)C(O)=O)c2ccc1[nH]2 HHDUMDVQUCBCEY-UHFFFAOYSA-N 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 238000001228 spectrum Methods 0.000 description 10
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- 239000004814 polyurethane Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
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- 239000000654 additive Substances 0.000 description 3
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- 125000000214 D-xylosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)CO1)* 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 239000003054 catalyst Substances 0.000 description 2
- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 description 2
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- 229930014626 natural product Natural products 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- PZBFGYYEXUXCOF-UHFFFAOYSA-N TCEP Chemical compound OC(=O)CCP(CCC(O)=O)CCC(O)=O PZBFGYYEXUXCOF-UHFFFAOYSA-N 0.000 description 1
- PYMYPHUHKUWMLA-VPENINKCSA-N aldehydo-D-xylose Chemical compound OC[C@@H](O)[C@H](O)[C@@H](O)C=O PYMYPHUHKUWMLA-VPENINKCSA-N 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
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- 238000006460 hydrolysis reaction Methods 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- BXFOFLAFXDHAHV-UHFFFAOYSA-N phosphoric acid;tris(2-chloroethyl) phosphate Chemical compound OP(O)(O)=O.ClCCOP(=O)(OCCCl)OCCCl BXFOFLAFXDHAHV-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- KVMPUXDNESXNOH-UHFFFAOYSA-N tris(1-chloropropan-2-yl) phosphate Chemical compound ClCC(C)OP(=O)(OC(C)CCl)OC(C)CCl KVMPUXDNESXNOH-UHFFFAOYSA-N 0.000 description 1
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- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6564—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms
- C07F9/6571—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms
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Abstract
本发明公开了一种新型糖类生物基环状磷/膦酸酯及其制备方法和应用。属于化合物领域。所述的环状磷/膦酸酯是将D‑木糖与乙酰氯进行反应得到中间产物,之后在缚酸剂的作用下与二氯磷酸酯或膦酰二氯进行反应,即可得到目标产品。该制备方法产率高,工艺简单,原料成本较低,环境污染小,且制备出的环状磷/膦酸酯阻燃剂阻燃性能突出,易于实现工业化。
Description
技术领域
本发明涉及化合物领域,具体涉及一种新型糖类生物基环状磷/膦酸酯及其制备方法和应用。
背景技术
近年来,随着人们对环保问题的重视以及有关环保法律法规的不断完善,卤系阻燃剂逐渐被禁用,开发无卤、低毒、高效的有机磷阻燃剂成为研究的热点。含磷阻燃剂可分为添加型和反应型两大类,添加型含磷阻燃剂有较好的阻燃性能且使用方便、种类很多,例如DMMP(甲基膦酸二甲酯)[Li W,Jiang Y,Jin Y,Zhu X L.Fuel,2019,235:1294-1300.]、TCEP(含氯有机磷酸酯三(2-氯乙基)磷酸酯)[Zhang A Z,Zhang Y H.Advanced MaterialsResearch,2012,374-377:1563-1566.]及TCPP(磷酸三(1-氯-2-丙基)酯)[Liu W,Zhang ZJ,Ge X G.International Journal of Polymer Analysis and Characterization,2018,23:38-44.]。
但添加型含磷阻燃剂在保存和使用过程中往往存在阻燃剂迁移、水解等弊端,且其往往和高分子材料混合而成,因此影响材料的机械性能[Henri Vahabi,RodolpheSonnier,Laurent Ferry.Polymer International,2015,64:313-328.]。而反应型阻燃剂通过与高分子基体材料发生化学反应,既可以赋予材料良好的阻燃性能,又对材料本身的机械性能影响较小,克服了添加型阻燃剂不稳定的缺点[Ménard,Negrell-Guirao,Claire;Ferry,Laurent.European Polymer Journal,2014,57:109-120.]。目前大量的对反应型含磷阻燃剂的研究表明,环状的磷酸酯阻燃剂以及含苯环的磷酸酯阻燃剂具有更优越的成炭性和热稳定性,因而阻燃性能更好[Guo,Q Q,Cao J,Han YY.Green Chemistry,2017,19(14):3418-3427.]。
发明内容
本发明的目的在于提供一种基于天然产物D-木糖结构的新型生物基环状磷/膦酸酯的制备方法及其在阻燃材料的应用。该制备方法工艺简单,原料成本较低,环境污染小,且制备出的环状磷/膦酸酯阻燃剂阻燃性能突出,易于实现工业化。
本发明的目的可以通过以下技术方案实现:
一类新型糖类生物基环状磷/膦酸酯,糖类生物基环状磷/膦酸酯的结构特征如下:
一种上述糖类生物基环状磷/膦酸酯的制备方法,该方法包括以下步骤:
第一步:将D-木糖溶于甲醇(甲醇既是溶剂,也是反应物)中,加入1.5eq的乙酰氯(催化剂),0~60℃反应0.5~4h,经TLC监测反应完成后,向反应体系加入适当无机碱淬灭反应,滤除白色固体,旋干有机相,得到化合物2粗品;
第二步:磷酸酯化合物(Ⅰ)的制备:将化合物2粗品溶于有机溶剂中,加入缚酸剂,在0~60℃条件下缓慢加入二氯磷酸酯,40~80℃条件下反应,TLC监测反应完成后,旋干溶剂,二氯甲烷萃取,得到目标化合物(Ⅰ);
膦酸酯化合物(Ⅱ)的制备:将化合物2溶于有机溶剂中,加入缚酸剂,在0~60℃条件下缓慢加入膦酰二氯,0~60℃条件下反应,TLC监测反应完成后,旋干溶剂,萃取,得到目标化合物(Ⅱ)。
上述方法中:第一步中:无机碱为NaHCO3、Na2CO3、KHCO3、K2CO3、LiOH、NaOH或KOH。
上述方法中:第二步中:所述的有机溶剂为乙酸乙酯、二氯甲烷、二氯乙烷、氯仿、四氯化碳、乙腈、N,N-二甲基甲酰胺、二甲亚砜、四氢呋喃、二氧六环或乙醚。
上述方法中:第二步中:缚酸剂为乙二胺、三乙胺、二异丙基乙胺、N-甲基咪唑、吡啶类、NaH、甲醇钠、乙醇钾或叔丁醇钾。
上述方法中:第二步中:二氯磷酸酯化合物的化学结构式如下:
步骤(2)中膦酰二氯的化学结构式如下:
其中R的定义如上述定义。
本发明技术方案中:二氯磷酸酯为二氯磷酸苯酯、二氯磷酸甲酯;膦酰二氯为苯基膦酰二氯或甲基膦酰二氯。
本发明技术方案中:所述的糖类生物基环状磷/膦酸酯再作为阻燃剂方面的应用。
本发明的有益效果:
本发明的有益效果在于提供一种基于天然产物D-木糖结构的新型生物基环状磷/膦酸酯的制备方法及其在阻燃材料的应用。该制备方法产率高,工艺简单,原料成本较低,环境污染小,且制备出的环状磷/膦酸酯阻燃剂阻燃性能突出,易于实现工业化。
附图说明
图1为化合物3的碳谱数据图。
图2为化合物4的碳谱数据图。
图3为化合物5的碳谱数据图。
图4为化合物6的碳谱数据图。
图5化合物3的TG曲线(N2氛围)
图6化合物4的TG曲线(N2氛围)
图7化合物5的TG曲线(N2氛围)
图8化合物6的TG曲线(N2氛围)。
图9为化合物2的碳谱数据图。
具体实施方式
下面结合具体实例对本发明作进一步阐述,但本发明不局限于这些实施例。
D-木糖购买自阿达玛斯试剂有限公司,规格为500g,纯度为98%,CAS号为58-86-6。
合成路线如下:
实施例1
将60g D-木糖溶于500mL甲醇(甲醇既是溶剂,也是反应物)中,加入1.5eq的乙酰氯(催化剂)32mL,40℃温反应2.5h,经TLC监测反应完成后,向反应体系加入NaHCO3固体淬灭反应,滤除白色固体,旋干有机相,得到化合物2粗品,产率为98%。化合物2的碳谱数据:112.0,84.9,77.0,76.9,61.9,55.8
实施例2
将化合物2溶于二氧六环,加入4eq Et3N,在室温条件下缓慢加入1eq二氯磷酸苯酯(PDCP),10min后移于60℃油浴反应,TLC监测反应完成后,旋干溶剂,二氯甲烷萃取,得到化合物3(淡黄色固体),产率为72%。由图1可见,化合物3的碳谱数据:150.2,130.1,121.3,120.3,111.8,82.0,75.8,71.6,55.8。由图5可见,其初始分解温度(分解5%时的温度)Tonset为238.89℃,在此温度之前TG曲线较为平稳,800℃时仍有31.4%的残炭,说明其成炭性能比较好。其初始分解温度比较高,表明阻燃剂本身的热稳定性比较高,适用于聚合物的阻燃。
实施例3
将化合物2溶于二氧六环,加入4eq Et3N,在室温条件下缓慢加入1eq二氯磷酸甲酯,10min后移于80℃油浴反应,TLC监测反应完成后,旋干溶剂,二氯甲烷萃取,得到化合物4(淡黄色固体),产率为78%。由图2可见,化合物4的碳谱数据:111.8,82.0,75.8,71.6,55.8,54.7。由图6可见,其初始分解温度(分解5%时的温度)Tonset为208.9℃,在此温度之前TG曲线较为平稳,700℃时仍有17.5%的残炭,其成炭性能没有化合物3优异。其初始分解温度比较高,表明阻燃剂本身的热稳定性比较高,适用于聚合物的阻燃。
实施例4
将化合物2溶于四氢呋喃,加入4eq Et3N,在0℃条件下缓慢加入1eq苯基膦酰二氯,10min后移于50℃反应,TLC监测反应完成后,旋干溶剂,二氯甲烷萃取,得到化合物5(淡黄色固体),产率为80%。由图3可见,化合物5的碳谱数据:134.6,134.2,129.4,128.5,111.8,83.6,82.0,75.8,71.6,55.8。由图7可见,其初始分解温度(分解5%时的温度)Tonset为233.22℃,在此温度之前TG曲线较为平稳,700℃时有16.3%的残炭,相对于化合物3,化合物5成炭性能较差。其初始分解温度比较高,表明阻燃剂本身的热稳定性比较高,适用于聚合物的阻燃。
实施例5
将化合物2溶于四氢呋喃,加入4eq Et3N,在0℃条件下缓慢加入1eq甲基膦酰二氯(PDCP),10min后移于室温反应,TLC监测反应完成后,旋干溶剂,二氯甲烷萃取,得到化合物6(淡黄色固体),产率为76%。由图4可见,化合物6的碳谱数据:111.8,83.7,82.0,75.8,68.9,55.8,14.0。由图8可见,其初始分解温度(分解5%时的温度)Tonset为243.7℃,在此温度之前TG曲线较为平稳,700℃时有17.3%的残炭,相对于化合物3,化合物6成炭性能较差。其初始分解温度比较高,表明阻燃剂本身的热稳定性比较高,适用于聚合物的阻燃。
单独添加TCPP对聚氨酯极限氧指数的影响
TCPP阻燃剂加入量/% | 0 | 7 | 20 | 28 | 42 |
极限氧指数/% | 19 | 20 | 21 | 22 | 24 |
表1阻燃剂化合物3和TCPP复配对聚氨酯极限氧指数的影响
表2阻燃剂化合物4和TCPP复配对聚氨酯极限氧指数的影响
表3阻燃剂化合物5和TCPP复配对聚氨酯极限氧指数的影响
表4阻燃剂化合物6和TCPP复配对聚氨酯极限氧指数的影响
由表1可看出阻燃剂化合物3和TCPP分别添加20%和8%时,极限氧指数可达到29%,具有良好的阻燃效果;由表2可看出阻燃剂化合物4和TCPP分别添加20%和8%时,极限氧指数可达到30%;由表3可看出阻燃剂化合物5和TCPP分别添加20%和8%时,极限氧指数可达到30%,已经达到难燃材料的要求;由表4可看出阻燃剂化合物6和TCPP分别添加20%和8%时,极限氧指数可达到32%。仅从极限氧指数数据来看,化合物3、4、5和6对聚氨酯的阻燃效果十分优异。
Claims (10)
4.一种权利要求1所述糖类生物基环状磷/膦酸酯的制备方法,其特征在于:该方法包括以下步骤:
第一步:将D-木糖溶于甲醇中,加入乙酰氯,0~60℃反应0.5~4h,经TLC监测反应完成后,向反应体系加入适当无机碱淬灭反应,滤除白色固体,旋干有机相,得到化合物2粗品;
第二步:磷酸酯化合物(Ⅰ)的制备:将化合物2粗品溶于有机溶剂中,加入缚酸剂,在0~60℃条件下缓慢加入二氯磷酸酯,40~80℃条件下反应,TLC监测反应完成后,旋干溶剂,二氯甲烷萃取,得到目标化合物(Ⅰ);
膦酸酯化合物(Ⅱ)的制备:将化合物2溶于有机溶剂中,加入缚酸剂,在0~60℃条件下缓慢加入膦酰二氯,0~60℃条件下反应,TLC监测反应完成后,旋干溶剂,萃取,得到目标化合物(Ⅱ)。
5.根据权利要求4所述的方法,其特征在于:第一步中:无机碱为NaHCO3、Na2CO3、KHCO3、K2CO3、LiOH、NaOH或KOH。
6.根据权利要求4所述的方法,其特征在于:第二步中:所述的有机溶剂为乙酸乙酯、二氯甲烷、二氯乙烷、氯仿、四氯化碳、乙腈、N,N-二甲基甲酰胺、二甲亚砜、四氢呋喃、二氧六环或乙醚。
7.根据权利要求4所述的方法,其特征在于:第二步中:缚酸剂为乙二胺、三乙胺、二异丙基乙胺、N-甲基咪唑、吡啶类、NaH、甲醇钠、乙醇钾或叔丁醇钾。
9.根据权利要求8所述的方法,其特征在于:二氯磷酸酯为二氯磷酸苯酯、二氯磷酸甲酯;膦酰二氯为苯基膦酰二氯或甲基膦酰二氯。
10.权利要求1所述的糖类生物基环状磷/膦酸酯再作为阻燃剂方面的应用。
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