CN103849006B - 具有双官能团结构的稳定剂及其组合物 - Google Patents
具有双官能团结构的稳定剂及其组合物 Download PDFInfo
- Publication number
- CN103849006B CN103849006B CN201310218925.9A CN201310218925A CN103849006B CN 103849006 B CN103849006 B CN 103849006B CN 201310218925 A CN201310218925 A CN 201310218925A CN 103849006 B CN103849006 B CN 103849006B
- Authority
- CN
- China
- Prior art keywords
- stabilizer
- organic material
- butyl
- hindered phenol
- dimethylhydrazine
- 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.)
- Expired - Fee Related
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Abstract
本发明具有双官能团结构的稳定剂是以1,1-二甲基肼与受阻酚为结构的双官能团化合物,所述具有双官能团结构的稳定剂可以与其它添加剂如受阻酚型抗氧化剂、磷酸酯类与亚酯类抗氧化剂、苯并三唑光稳定剂、受阻胺型光稳定剂及荧光增白剂等共同使用而形成组合物,且所述具有双官能团结构的稳定剂及组合物可作为有机材料的抗氧化、光安定及热稳定剂使用,以有效防止有机材料受光、NOx及热引起的理化特性变化。
Description
技术领域
本发明涉及一种稳定剂,特别涉及一种应用于有机材料的具有双官能团结构的稳定剂及其组合物。
背景技术
众所皆知,有机聚合物材料易受光、热及NOx等所破坏,若能添加适用的有机添加剂如抗氧化剂或光稳定剂等,则可保护该材料免受紫外线光、热及NOx的影响。例如塑料、树酯、化妆品、颜料、涂料、纺织品等都容易受光或紫外光照射而导致色变或材料分解,但若能添加具抗氧化或具光吸收特性的化学物质,则可吸收此有害光源或将此有害光源转换成无害能量,来保护材料光泽与耐久性。
以1,1-二甲基肼(1,1-dimethylhydrazine)作为稳定剂制备原料的相关研究有不少,但大都以对称型化合物结构为主;比较常用的为将此原料与异氰酸酯进行加成反应。例如1982年由Shevchenko,V.V.等人在ZhurnalOrganicheskoiKhimii(1982),18(12),2547-9(USSR)发表以1,1-二甲基肼与六亚甲基二异氰酸酯(hexamethyleneDiisocyanate)或亚甲基二苯基二异氰酸酯[(methylenebiphenyl)Diisocyanate]进行反应得化合物结构两末端具1,1-二甲基肼型产物;专利CN1221829(1999)亦有相同化合物合成与应用;在JP02022360A(1990)、JP04240213(1992)、JP06271761(1994)、KR2001078541(2001)、KR2003057585(2003)、KR2002076712(2002)、JP2005213710(2005)、JP2006045333(2006)、US20060142441(2006)、WO2007129606(2007)、WO2009011189、JP2009144266、WO2010050639、CN102127826(2011)等专利中亦有相关报道。尤其是聚胺酯(Polyurethane)具有优良的耐热及抗老化的效果,但其对抗氧化性则明显的不足。
文献或专利中,对有机聚合物材料抗氧化特性大多以添加添加剂的方式来克服,这类添加剂以阻酚型抗氧化剂、磷酸酯类与亚酯类抗氧化剂为主。如专利CN102557991、CN102206432、CN102181488、TW201229214、US2012252931、KR20120060672、US2008848502、US2011236550等皆是以阻酚型抗氧化剂增加抗氧化效果。另有为同时增加抗氧化与耐热或耐光或其它效果者如专利US5846988(1998年)使阻酚型抗氧化基与四氢噻唑(thiazolidine)在同一结构中,WO2012065919使阻酚型官能团与硫醚基在同结构中以同时提高抗氧化与耐热性;而较有名同结构中具不同官能团者为Ciba公司开发的Tinuvin-144,该结构同时具阻酚型官能性与受阻胺型官能性;如专利US4960593、WO2012010570、US2003153653、WO2001092392等等所述。
发明内容
本发明具有双官能团结构的稳定剂即是并用1,1-二甲基肼型与受阻酚型官能团在同一结构中来增加有机聚合材料抗氧化、耐热及抗NOx特性。这类产品可用于聚甲醛、聚丙烯酸树酯、聚氯丁胶乳粘合剂、聚氨酯、聚尿素树酯等。
根据本发明的具体实施例,所述具有双官能团结构的稳定剂由1,1-二甲基肼与一含受阻酚官能团化合物反应而制得,且用以添加于有机材料中,其特征在于,如以下化学式(Ⅰ)所示:
其中:
m为0~2;
n为0~2,且m和n不同时为0;
R1为C1-C8烷烃基;及
X为-NR2,其中R2为H或-NHCOCH2CH2-。
优选的是,所述含受阻酚官能团化合物为异氰酸酯化合物,A如以下化学式(Ⅱ)所示,其中,R为C1-C18直链烷烃、环烷烃或具苯环烷烃者:
优选的是,m和n为1,如以下化学式(Ⅲ)所示,其中,R为C6-C13烷烃或烷苯基,R1为甲基:
优选的是,所述1,1-二甲基肼与一含受阻酚官能团化合物在催化剂下以1:1的摩尔比进行反应,且所述含受阻酚官能团化合物如以下化学式(Ⅳ)所示:
优选的是,所述1,1-二甲基肼与一含受阻酚官能团化合物在无催化剂下以1:1的摩尔比反应,且所述含受阻酚官能团化合物如以下化学式(Ⅴ)所示其中R1为C1-C8烷基:
优选的是,本发明的具有双官能团结构的稳定剂占所述有机材料的重量百分比为0.01~2。
在一实施例中,本发明另提供一种组合物,用以添加于有机材料中,包括本发明的具有双官能团结构的稳定剂与至少一添加剂。
优选的是,所述有机材料为聚氨酯。
优选的是,所述添加剂为受阻酚型抗氧化剂、磷系抗氧化剂及受阻胺型光稳定剂中的一种或几种。
优选的是,所述添加剂占所述有机材料的重量百分比为0.01~10。
本发明具有以下有益效果:本发明的具有双官能团结构的稳定剂可单独或并用至少一种添加剂添加于有机材料中,以增进有机材料的耐光、耐候、抗氧化、耐高温等特性,进而提供优良的加工流动性。
本发明的其它目的和优点可以从本发明所揭露的技术特征得到进一步的了解。为了让本发明的上述和其它目的、特征和优点能更明显易懂,下文特举实施例作详细说明如下。
具体实施方式
本发明以1,1-二甲基肼及受阻酚官能团化合物为原料,若依原料摩尔比或反应条件所产生的具有双官能团结构的稳定剂,会具有如下一般式结构(一):
上述结构中;R1如一般定义为氢或为C1-C8烷烃基结构;X定义为-NR2;R2为H或-NHCOCH2CH2-;m为0~2;n为0~2,且m和n不同时为0;在结构(一)中,A视使用的反应物而定;而在本实施例中所使用的反应物为异氰酸酯化合物(isocyanates);当使用异氰酸酯化合物时,则A具有酰胺键,如下结构(二)定义:
上述A结构中,R为C1~C18直链烷烃或环烷烃或具苯环烷烃者;当m=n=1时,本发明具有双官能团结构的稳定剂如本结构(三)所示:
在上述结构(三)中,R优选C6~C13烷烃或烷苯基,X定义为-NR2;R2为H或-NHCOCH2CH2-;R1如前述定义为氢或为C1~C8烷烃基结构;R1优选甲基。
可以理解的是,由1,1-二甲基肼与一含受阻酚官能团化合物反应所制成者应为一混合物,即包含多个如结构(一)所示的具有双官能团结构的稳定剂,而其中0<m<2,0<n<2,且m、n不可同时为0;换言之,所述混合物可包含多个m或n为整数或非整数的如结构(一)所示的具有双官能团结构的稳定剂,亦即结构(三)所示的具有双官能团结构的稳定剂只是混合物中的一种结构。而本发明也可以借由控制反应温度的方式,例如先在低温下加入受阻酚化合物与偏二甲肼的一种与异氰酸酯进行单边反应,待反应到一定程度后,再于室温下加入受阻酚化合物与偏二甲肼的另一种持续进行反应;如此,所形成的混合物中大部分即可为结构(三)所示的具有双官能团结构的稳定剂。
更详细地说,本发明上述结构(三)合成方式可由1摩尔异氰酸酯双官能团化合物与1摩尔1,1-二甲基肼及1摩尔受阻酚化合物在有或无催化剂下进行反应。上述本发明所使用受阻酚原料具有结构(四)或结构(五):
在结构(四)或结构(五)中,R1如上述定义为C1~C8烷基;结构(四)系由甲酯结构与水合肼(hydrazine)在溶剂下脱甲醇可得;反应方程式如反应式(一)所示。
结构(五)的原料取得则由烷基酚经重氮化反应成氮氧化合物后,再经Na2S2O3或锌粉还原反应即可制得;如反应式(二)所示。
本发明上述结构(一)化合物所提及的异氰酸酯原料可选自对苯二异氰酸酯(1,4-phenyleneDiisocyanate)、甲苯二异氰酸酯(tolyleneDiisocyanate)、异佛尔酮二异氰酸酯(isophoroneDiisocyanate)、4,4-二异氰酸酯二环己基甲烷[methylene-bis(4-cyclohexylisocyanate)]、1,6-己基二异氰酸酯(1,6-HexamethyleneDiisocyanate)、4,4-亚甲基双(异氰酸苯酯)(4,4-diphenylmethaneDiisocyanate)、4,4′,4"-三苯甲烷三异氰酸酯(triphenylmethane-4,4′,4"-Triisocyanate)等等;其中优选4,4-亚甲基双(异氰酸苯酯)。
本发明所提及的上述结构皆在溶剂下进行反应;这里的溶剂包含极性与非极性溶剂;如甲苯、二甲苯、苯、正己烷、正庚烷、环己烷等烷烃类;又如乙醚、丁醚等醚类或甲醇、乙醇、异丙醇、丁醇等醇类,其它如乙腈、四氢呋喃、丙酮、丁酮、N,N-二甲基甲酰胺(DMF)及水等都可作为溶剂使用;其中优选甲苯与乙腈。
值得注意的是,合成本发明结构(一)中的上述原料偏二甲肼及结构(四)或结构(五)的加入顺序并不会影响到本发明的结果,但优选结构(四)或结构(五)先行加入与异氰酸酯在低温进行反应,反应完后再加入偏二甲肼进行反应,这种加料优点为较不会有残存的原料残留于成品中,因偏二甲肼为液体且沸点低。
本发明具有双官能团结构的稳定剂的反应温度范围介于-5~200℃,反应初始温度通常于低温或常温下反应,当反应到一定程度时再逐渐升温至所要的反应温度,本发明具有双官能团结构的稳定剂的优选反应温度范围为常温至100℃。
上述结构(一)可添加于有机材料中对抗光或紫外光或高温或氧化,以防止有机材料理化特性变化,并进而提供优良的加工流动性。而常用的有机材料可为下列物质:
1.聚烯烃类:常用的例如聚乙烯、聚丙烯、聚异丁烯、聚异戊二烯、聚丁二烯等,上述聚烯烃类单独使用,或依比例形成混合物。
2.烯烃类共聚合物:例如乙烯/丙烯共聚物、线性低密度聚乙烯(LLDPE)与低密度聚乙烯的混合物、丙烯/1-丁烯、丙烯/异丁烯、丙烯、丁二烯、异丁烯/异戊烯、乙烯/烷基丙烯酸酯、乙烯/烷基甲基丙烯酸酯、乙烯/丙烯酸共聚物及其盐类。
3.聚苯乙烯、聚对甲基苯乙烯、聚甲基苯乙烯等。
4.苯乙烯或α-甲基苯乙烯与二烯物或丙烯酸衍生物之共聚合物:如苯乙烯与丁二烯共聚合物,苯乙烯与丙烯晴共聚合物、苯乙烯/丁二烯/万基丙烯酸酯共聚物、苯乙烯/丁二烯/丙烯晴共聚物、苯乙烯/马来酸酐共聚合物、苯乙烯/丙烯晴/甲基丙烯酸酯共聚合物。
5.苯乙烯或α-甲基苯乙烯的接枝共聚合物:如苯乙烯接枝于聚丁二烯上、苯乙烯接枝在丁二烯与丙烯晴共聚合物上。
6.含卤素的聚合物:如聚氯平橡胶、聚氯乙烯、聚氟化乙烯或,与含卤素单体的共聚合物,如氯乙烯与醋酸乙烯酯的共聚合物等。
7.环醚类的均聚物与共聚物:如聚烷基乙二醇或聚环乙烷、聚环氧丙烷等。
8.聚醛类:如聚甲醛。
9.聚苯醚(polyphenylens)和聚苯硫醚(sulfides)。
10.聚氰氨酯类。
11.聚酰胺与酰胺共聚合物:这类主要是由二胺类化合物于而羧基化合物缩合反应而成,例如聚酰胺6、聚酰胺6/6、6/10、6/12或4/6、聚酰胺12等。
12.聚尿素树脂与聚氨酯:这类主要是由二胺类化合物或多元醇与二异氰酸酯反应而成的聚合物或寡聚物。
13.聚碳酸酯和聚酯/碳酸酯。
14.不饱和聚酯树脂:这类可由饱和或不饱和二羧酸化合物与多元醇缩合反应而成,也可加入烯烃类作为聚酯类的交联剂,也可加入含卤素化合物使其低燃性。
15.热固性丙烯酸树脂或丙烯酸树脂中含美耐皿树脂、尿素树脂或聚氰酸酯或环氧树脂等。
16.上述聚合物混合物:如PP/EPDM、PVC/MBC、PC/ABS、PC/PBT、POM/热塑性PUR、PA/PPO等。
上述所列举的有机材料中,优选合成聚合物,其中又以聚氨酯类为本发明的具有双官能团结构的稳定剂的最佳组合;通常添加本发明的结构(一)于有机材料中的用量为0.01~10wt%,较佳添加量为0.01~2wt%,即可达到抗氧化效果。进一步地,本发明的结构(一)亦可并用其它添加剂而共同添加于有机材料中,以增进有机材料的耐光、耐候、抗氧化、耐高温等特性。最常用的添加剂如下:
1.阻酚型抗氧化剂
1.1烷基化单酚类:例如2,6-二-叔丁基-4-甲基苯酚、2-叔丁基-4,6-二甲基苯酚、2,6-二叔丁基-4-乙基苯酚、2,6-二-叔丁基-4-正丁基苯酚、2,6-二叔丁基-4-异丁基苯酚、2,6-二-环戊基-4-甲基苯酚、2,6-二-十八烷基-4-甲基苯酚、2,4,6-三环已基苯酚、2,6-二-壬基-4-甲基苯酚。
1.2烷基化醌类:例如2,6-二-叔丁基-4-甲氧基苯酚、2,5-二-叔丁基对苯二酚。
1.3苯硫醚酚类:如2,2'-硫化-双-(6-叔丁基-4-甲基苯酚)、2,2'-硫化-双-(4-辛基苯酚)、4,4'-硫化-双-(6-叔丁基-3-甲基苯酚)、4,4'-硫化-双-(6-叔丁基-2-甲基苯酚)。
1.4次烷基双酚类:例如2,2'-亚甲基-双(6-叔丁基-4-甲基苯酚)、2,2'-亚甲基-双(6-叔丁基-4-乙基苯酚)、2,2'-亚甲基-双[4-甲基-6-(α-甲基环己基)-苯酚]、2,2'-亚甲基-双(4-甲基-6-环己基苯酚)、2,2'-亚甲基-双(6-壬基-4-甲基苯酚)、2,2'-亚甲基-双(4,6-二-叔丁基苯酚)、2,2'-亚乙基-双(4,6-二-叔丁基苯酚)、2,2'-亚乙基-双-(6-叔丁基-4-异丁基苯酚)、2,2'-亚甲基-双[6-(α-甲基苄基)-4-壬基酚]、2,2'-亚甲基-双[6-(α,α-二甲基苄基)-4-壬基酚]、4,4'-亚甲基-双-(2,6-二-叔丁基苯酚)、4,4'-亚甲基-双-(6-叔丁基-2-甲基苯酚)、1,1-双(5-叔丁基-4-羟基-2-甲基苯基)-丁烷、2,6-双(3-叔丁基-5-甲基-2-羟基苯基)-4-甲基苯酚、1,1,3-三-(5-叔丁基-4-羟基-2-甲基苯基)-丁烷、1,1-双(5-叔丁基-4-羟基-2-甲基苯基)-3-十二烷基-硫代丁烷、乙二醇-[3,3-双-(3'-叔丁基-4'-羟基苯基)-丁基酯]。
1.5苄基化合物:例如双(3,5-二-叔丁基-4-羟基苄基)硫醚、1,3,5-三甲基-2,4,6-三(3,5-二叔丁基-4-羟基芐基)苯等。
1.6酰胺化酚类:例如β-(3,5-二-烷基-4羟基苯基)丙烯酸甲酯与十八胺反应而酰胺化。
1.7β-(3,5-二-烷基-4-羟基苯基)丙烯酸酯类:这类的酯类是由β-(3,5-二-烷基-4-羟基苯基)丙烯酸或丙烯甲酯与一元醇或多元醇酯化反应或酯交换反应而得,常用的一元醇或多元醇如异辛醇、正辛醇或碳C7-C9的混合醇、十八醇、1,6-己二醇、1,4-丁二醇、硫化乙基乙二醇、二乙基乙二醇、三乙基乙二醇、季戊四醇。例如异戊四醇四(3-(3,5-二叔丁基-4-羟基苯基))丙酸酯(CASNo.229-722-6)、三乙二醇二(3-(3-叔丁基-5-甲基-4-羟基苯基))丙酸酯(CASNo.36443-68-2)等。
1.8非苯环硫醚类抗氧化剂:例如硫代二丙酸二月桂酯、硫代二丙酸二(十三)酯、硫代二丙酸二(十四)酯、硫代二丙酸二(十八)酯等。
1.9β-(3,5-二-烷基-4-羟基苯基)丙烯酸酰胺类:例如N,N-双-(3,5-二-叔丁基-4-羟基苯基丙烯基)-已二胺、N,N-双-(3,5-二-叔丁基-4-羟基苯基丙烯基)-丙二胺、N,N-双-(3,5-二-叔丁基-4-羟基苯基丙烯基)-联胺、β-(3,5-二-叔丁基-4-羟基苯基)丙烯酸-十八烷基酰胺、β-(3-甲基-5-叔丁基-4-羟基苯基)丙烯酸-十八烷基酰胺。
2.紫外线吸收剂与光稳定剂
2.12-(2′-羟基苯基)-苯并三唑化合物:例如苯基上带有下列取代基,如5′-甲基,3′,5′-二叔丁基、5′-叔丁基、5′-(1,1,3,3-四甲基丁基)、5-氯-3′,5′-二-叔丁基、5-氯-3′-叔丁基-5′-甲基、3′-异丁基-5′-叔丁基、3′,5′-二-叔戊基或3′,5′-双-(α,α-二甲基苄基)等之苯并三唑化合物或2’-羟基对位位置具丙烯酸衍生的酯类等苯并三唑化合物。
2.22-羟基二苯酮:这类化合物苯基上带有4-羟基、4-甲氧基、4-辛氧基、4-葵氧基、4-十二烷氧基等。
2.3苯甲酸衍生的酯类:如2,4-二-叔丁基苯基、3,5-二叔丁基-4-羟基苯甲酸酯。
2.4镍稳定剂:例如2,2′-硫化-双[4-(1,1,3,3-四甲基丁基)-苯酚]之镍的络合物。
2.5阻胺型光稳定剂:例如双(2,2,6,6-四甲基哌啶基)癸二酸酯、2-(3,5-二叔丁基-4-羟基-苯苄)-2-丁基-1,3-丙二酸二(1,2,2,6,6-五甲基-4-哌啶基)酯、[[6-(1,1,3,3-四甲基丁基)胺基]均三嗪-2,4二][[(2,2,6,6-四甲基-4-哌啶基)亚胺基]己次甲基[(2,2,6,6-四甲基-4-哌啶基)亚胺基]]的聚合体、双(1,2,2,6,6-五甲基-4-哌啶基)-癸二酸酯、4,4′-二(1,2,2,6,6-五甲基哌啶基)双苯基甲烷[4,4′-diphenylmethanebis(1,2,2,6,6-pentamethylpiperidylcarbamate)]、4,4′-二(2,2,6,6-四甲基哌啶基)双苯基甲烷[4,4′-diphenylmethanebis(2,2,6,6-tetramethylpiperidylcarbamate)]、聚丁二酸(4-羟基-2,2,6,6-四甲基-1-哌啶乙醇)酯[poly-(N-Beta-hydroxyethyl-2,2,6,6-tetramethylpiperidine-4-hydroxy-piperidylsuccinate)]等。
3.金属失活剂:如N,N-双(3,5-二叔丁基-4-羟苯基丙烯酸基)联胺。
4.磷酸酯类与亚酯类等磷系抗氧化剂:例如亚磷酸三苯酯、亚磷酸三(壬基苯基)酯、亚磷酸三(2,4-二叔丁基苯基)酯、双[2-甲基-4,6-二(1,1-二甲基乙基)苯酚]磷酸乙基酯(CAS.NO.14560-60-8)、亚磷酸双酚A酯、四(2,4-二叔丁基苯基-4,4'-联苯基)双磷酸酯(CAS.NO.38613-77-3)、季戊四醇双亚磷酸二(十八醇)酯(CAS.NO.3806-34-8)、季戊四醇双二亚磷酸二(2,4-二叔丁基苯基)酯、双(2,6-二叔丁基-4-甲苯基)季戊四醇亚磷酸酯、2,4,6-三叔丁基苯基季戊四醇双亚磷酸酯、季戊四醇双亚磷酸二(癸醇)酯、季戊四醇双亚磷酸二(十二醇)酯、一缩二丙二醇(DPG)与亚磷酸三苯酯的缩合物(摩尔比1:2)或寡聚物(如摩尔比7:8)等。
5.碱性共稳定剂:如三聚氰胺、尿素衍生物、联胺衍生物、1,1-二甲肼衍生物、氨类、羟-氮键有机化合物、碱性与碱土族金属盐类、沸石、水滑石、硬酯酸钙、锌、锡、镁等有机稳定剂。
6.成核剂:如4-叔丁基苯甲酸或己二酸等。
7.填料与强化剂:例如碳酸钙、硅藻土、玻璃纤维、asbestos、talc、高领土、云母、金属氧化物和氢氧化物、碳黑与石墨等。
8.其它添加物:如可塑剂、润滑剂、乳化剂、界面活性剂、颜料、荧光增白剂、阻燃剂、抗静电剂及发泡剂等。
通常上述添加剂添加于本发明组成份时以有机材料总重为基础,添加量为有机材料的0.01%至10%。
如本发明先前已指出,本发明的具有双官能团结构的稳定剂可单独添加于上述的有机材料中,亦可与其它添加剂形成组合物添加于有机材料中。添加方式可于加工前与有机材料进行混合后进行压出或射出成型,也可于有机材料生产制造过程中添加或于后加工中使用。于聚氨酯时亦可将结构(一)或其组合物添加于多元醇或异氰酸酯原料中一同发泡。较佳的组合物配方组合为本发明结构(一)并同阻酚型抗氧化剂、磷酸酯类与亚酯类抗氧化剂及受阻胺型光稳定剂共同使用,可让有机材料更具优良的耐候、耐热、抗氧化与抗紫外线等特点;详细内容如下列实施例所述。
实施例一(化合物A):
于500毫升烧杯中加入300g的甲醇、61.8g2,6-二叔丁基苯酚、及1.0g浓硫酸,并降温-5℃~0℃,控制在此温度下渐渐加入21.5g的亚硝酸钠,加完后再搅拌2小时确保反应完成,加100毫升的水使结晶析出,过滤水洗得黄色固体粉末。并将此粉末溶于150毫升的甲苯中,加入100g的30%硫酸,升温至55~65℃,慢慢加入23g的锌粉,以TLC(EA:hexane=3:7)检测反应完成状况,会有白色固体渐渐析出,此为结构(五)的硫酸盐化合物,产率为80%。
取上述结构(五)的硫酸盐化合物75.92g(0.238摩尔)于500毫升烧杯中,加入150毫升甲苯并以10%碳酸钠分解硫酸盐,再以水洗至中性,排水层后慢慢滴加入至内含150毫升甲苯与59.5克(0.238摩尔)4,4-亚甲基双(异氰酸苯酯)的四颈机械搅拌瓶中,温度控制至10~15℃,反应三小时后让反应渐回至室温,于常温下再慢慢滴入14.3克(0.2383摩尔)1,1-二甲基肼37.3克(0.238摩尔)滴入过程会有放热现象,温度自然升至50~55℃,维持温度55~60℃三小时后,再升温至90℃使反应完全,降温结晶经过滤得量75克白色固体化合物a。
实施例二(化合物B):
于500毫升四颈机械搅拌瓶中加入250毫升乙醇、60g水合肼与146gβ-(3,5-二-叔丁基-4-羟基苯基)丙烯酸甲酯,升温至回流6小时,TLC检测至无β-(3,5-二-叔丁基-4-羟基苯基)丙烯酸甲酯,加150毫升水降温使结晶完全析出,过滤烘干后得白色固体粉末的结构(四),得量141克。
于500毫升四颈机械搅拌瓶中,以氮气置放后加入250毫升甲苯及50克(0.2摩尔)4,4-亚甲基双(异氰酸苯酯),于10~15℃下慢慢先加入58.4克(0.2摩尔)的前述结构(四),加入过程会有放热现象,温度自然升至40~45℃,反应一小时后再加入12.6克(0.21摩尔)1,1-二甲基肼,滴加过程中会有固体产生,维持温度至55~60℃三小时,再升温至90℃,反应二小时后降温至10℃过滤出结晶,得量109克白色固体化合物b。
实施例三(化合物C):
方法同实施例二;但以33.6克的1,6-己基二异氰酸酯取代50克(0.2摩尔)4,4-亚甲基双(异氰酸苯酯),得量95克白色固体。
实施例四(化合物D):
方法同实施例二;但以125克β-(3-甲基-5-叔丁基-4-羟基苯基)丙烯酸甲酯取代146gβ-(3,5-二-叔丁基-4-羟基苯基)丙烯酸甲酯;得白色固体。
实施例五(化合物E):
方法同实施例四;但结构(四)对4,4-亚甲基双(异氰酸苯酯)对1,1-二甲基肼三者反应摩尔比例为1.34:1.0:0.67;得白色固体。
比较例(化合物F):
方法同实施例二;但不使用1,1-二甲基肼且结构(四)对4,4-亚甲基双(异氰酸苯酯)二者反应摩尔比例为2.0:1.0;得白色固体。
实施例六:耐候性试验
将实施例化合物与热可塑性聚氨酯(TPU;台湾昆仲95A)混合,在适量比例的光稳定剂添加物条件下经单螺杆压出机(台湾成吉公司试验机EPL-30V)在195℃混合压出后,再经射出成型机(台湾煜达公司立式射出机Y-450-18-P)在200℃射出成2mm的ASTM-D638TYPEⅣ试片。将此试片分别置室内空气中与耐候试验机(Q-LabQUVtester)中,并观测其颜色变化,结果如表(一)所示。表中明显显示组成c因其化合物B结构上具抗NOx的1,1-二甲基肼,故在室内耐候试验与QUV测试中,相对于空白试验和组成a有明显优势。而表中组成b、d、e、f、g因组成中加入光稳定剂,不仅可增加室内耐黄变,也亦增加耐QUV之效果,而磷系抗氧化剂的使用不仅有效降低初始的YI值,亦有增加耐候之综效效果。表中所列举的光稳定剂剂分系由台湾双键化工公司所生产;分别为Chisorb292:双(1,2,2,6,6-五甲基4-哌啶基)-癸二酸酯;Chisorb770:双(2,2,6,6-四甲基哌啶基)癸二酸酯;Chinox168:亚磷酸三(2,4-二叔丁基苯基)酯。
表(一):化合物耐候试验
组合物:a=0.15%化合物F
b=0.15%化合物A+0.15%Chisorb292
c=0.15%化合物B
d=0.15%化合物C+0.15%Chinox770
e=0.15%化合物D+0.15%Chisorb292
f=0.15%化合物E+0.15%Chisorb770
g=0.15%化合物E+0.1%Chinox770+0.05%Chinox168
以上所述仅为本发明之较佳可行实施例,非因此局限本发明之专利范围,故举凡运用本发明说明书内容所为之等效技术变化,均包含于本发明之范围内。
Claims (9)
1.一种具有双官能团结构的稳定剂,由1,1-二甲基肼与一含受阻酚官能团化合物及异氰酸酯反应而制得,可用以添加于有机材料中,其特征在于,如以下化学式(Ⅰ)所示:
其中:
m为0~2;
n为0~2,且m和n不同时为0;
R1为C1-C8烷烃基;及
X为-NR2,其中R2为H或-NHCOCH2CH2;
A如以下化学式(Ⅱ)所示,其中,R为C1-C18直链烷烃、环烷烃或具苯环烷烃者:
2.如权利要求1所述的具有双官能团结构的稳定剂,其特征在于,m和n为1,如以下化学式(Ⅲ)所示,其中,R为C6-C13烷烃或烷苯基,R1为甲基:
3.如权利要求2所述的具有双官能团结构的稳定剂,其特征在于,所述1,1-二甲基肼与一含受阻酚官能团化合物在催化剂下以1:1的摩尔比进行反应,且所述含受阻酚官能团化合物如以下化学式(Ⅳ)所示,其中R1为C1-C8烷基:
4.如权利要求1所述的具有双官能团结构的稳定剂,其特征在于,所述1,1-二甲基肼与一含受阻酚官能团化合物在无催化剂下以1:1的摩尔比进行反应,且所述含受阻酚官能团化合物如以下化学式(Ⅴ)所示,其中R1为C1-C8烷基:
5.如权利要求1所述的具有双官能团结构的稳定剂,其特征在于,占所述有机材料的重量百分比为0.01~2。
6.一种组合物,用以添加于有机材料中,其特征在于,所述组合物包括如权利要求1所述的具有双官能团结构的稳定剂与至少一添加剂。
7.如权利要求6所述的组合物,其特征在于,所述有机材料为聚氨酯。
8.如权利要求6所述的组合物,其特征在于,所述添加剂为受阻酚型抗氧化剂、磷系抗氧化剂及受阻胺型光稳定剂中的一种或几种。
9.如权利要求6所述的组合物,其特征在于,所述添加剂占有机材料的重量百分比为0.01~10。
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