CAS号:9003-01-4
品名:丙烯酸树脂Polyacrylicacid
中文别名:聚丙烯酸;
英文别名:Acrylicacidpolymer;Poly(acrylicacid);2-Propenoicacidhomopolymer;PAA;Propenoicacidpolymer;poly(acrylicacid)macromolecule;2-Propenoicacid,homopolymer;Carbomer;
分子式:C3H4O2
分子量:72.0627
精确质量:72.0211
Psa:37.3
RTECS号:AT4680000
EINECS号:618-347-7
外观与性状:无色粘性液体
密度:1.09 (30% aq.)
沸点:116ºC
熔点:106ºC
闪点:61.6ºC
折射率:n20/D 1.442
稳定性:Stable under normal temperatures and pressures.
储存条件:库房通风低温干燥
安全说明:S24/25
危险类别码:R45; R46; R34; R36/37/38
WGK Germany:3
海关编码:3906909090
危险品运输编码:UN 3265 8/PG 3
危险品标志:C; T; Xi
信号词:Danger
危险性防范说明:P201; P308 + P313
危险标志:GHS08
危险性描述:H340; H350
简介:Poly(acrylicacid)(PAAorCarbomer)isgenericnameforsynthetichighmolecularweightpolymersofacrylicacid.Theymaybehomopolymersofacrylicacid,crosslinkedwithanallyletherpentaerythritol,allyletherofsucroseorallyletherofpropylene.InawatersolutionatneutralpH,PAAisananionicpolymer,i.e.manyofthesidechainsofPAAwilllosetheirprotonsandacquireanegativecharge.ThismakesPAAspolyelectrolytes,withtheabilitytoabsorbandretainwaterandswelltomanytimestheiroriginalvolume.DryPAAsarefoundinthemarketaswhiteandfluffypowders.Carbomercodes(910,934,940,941and934P)areanindicationofmolecularweightandthespecificcomponentsofthepolymer.FormanyapplicationsPAAsareusedinformofalkalimetalorammoniumsalts,e.g.sodiumpolyacrylate.
用途:聚丙烯酸为低分子量丙烯酸单聚物,和有机膦酸盐和有机膦酯、聚磷酸盐复配使用,有较好的协同效应,对在水中膦酸钙、氧化铁有优良的分散作用。可在碱性和高浓缩倍数条件下运行而不结垢。聚丙烯酸排放时不会污染环境。
亲水性高分子