CN1272874A - 含有富集润肤剂相/条纹的个人洗涤用皂条组合物 - Google Patents
含有富集润肤剂相/条纹的个人洗涤用皂条组合物 Download PDFInfo
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Abstract
本发明涉及一种皂条组合物,其中,在包含增稠且包埋的润肤剂的润肤组合物中加入一种基础皂组合物或挤出过程中加入以形成肉眼可见的润肤剂小滴的浓缩区域。与非包埋的润肤剂直接混合而形成皂片再将其挤出形成最后的皂条的情形相比,加入包埋的小滴将使得沉积大大提高。
Description
发明领域
本发明涉及皂条组合物,特别是(虽然并不排除)合成皂条组合物,所述组合物能够传送较之于目前可能的情形更大量的增益剂(beneficial agent)(如硅氧烷)。具体而言,本发明涉及包含基础相和条纹(含润肤剂)相的皂条组合物,其中,条纹相包含包埋的润肤剂小滴(包埋于介质中,其中,润肤剂即聚亚烷基二醇被负载,所述介质被增稠,从而包埋小滴)。
发明背景
长期以来,人们一直希望由个人清洗组合物向皮肤传送某种增益剂(benefit agent)(例如硅氧烷或其它油)。
例如,在液体清洁剂中,阳离子亲水聚合物如来自Amerchol的聚合物JR或来自Rhone Poulenc的Jaguar等已被用于增进增益剂的传送(EP 93,602;WO 94/03152;WO94/03151)。在本申请人的共同未决申请美国申请号08/412,803(Tsaur等)中,分开的水凝胶颗粒可用作一种以浓缩形式包埋增益剂的结构。
本发明中,增益剂的包埋是这样实现的:生产一种包含润肤剂的组合物,其中,发现小滴(如聚亚烷基二醇)的介质用一种增稠剂(如煅制二氧化硅)增稠,从而使小滴包埋在聚乙二醇中。含有润肤剂并被增稠的载体组合物可完全分散于皂条中(如以同一申请日申请的本申请人的共同未决申请(Farrell等))或者以浓缩组合物插入皂条中(如作为一种条纹)。
业已证实,由于种种原因,向皂条组合物中传送增益剂(如硅氧烷)是非常困难的。例如,如果增益剂不能在皂条组合物中与其它组分充分分散,则疏水的增益剂通常将会与皂条预混物中的疏水性物质接触,而不会沉积于皮肤或其它基底上。因此,在终产品皂条(经研磨、压条和挤出后)中将不存在或只存在很少的增益剂能被传送至皮肤上。如果增益剂太粘,则其会缠住加工设备并变得难以进行加工。
US 5,154,849(Visscher等)公开了一种包含硅氧烷皮肤温和/润湿助剂成分的皂条组合物。在一种实施方案中,硅氧烷组分可与一种载体混合,选择所述载体应方便硅氧烷的掺入。优选的载体为聚乙二醇。在其第16栏中,描述了将硅氧烷混合进入熔化的Carbowax(聚乙二醇)中。将混合物冷却以形成小薄片,优选将小薄片加至一个搅拌机中。
但是,Visscher等的组合物并未能指出或建议采用增稠剂(如煅制二氧化硅)来增稠亚烷基二醇载体,以更易于包埋润肤剂。由于硅氧烷小滴并未被其传送的载体(如亚烷基二醇载体)“包容”,增益剂硅氧烷易于从载体中脱逸,并严重地干扰皂条的加工过程(如形成难以加工的粘性胶粘物混乱成分),并易于堵塞机器。与之相反,本发明包埋的润肤剂小滴则不会干扰加工过程。
进而,本发明特别涉及向皂条中插入(如通过注射、挤出或共挤出)分开的含有包埋润肤剂小滴(即包埋在增稠的载体中)的组合物,从而它们能够占据浓缩区域或整个皂条(而不是如同日申请的Farrell等的共同未决申请中被分散开)。Visscher等既未教导也未暗示可由浓缩的肉眼可见的润肤剂小滴区域来增强沉积作用。
最后,在He等的共同未决申请中,申请人指出用具有较低的结晶度疏水聚合物预增稠的低粘度油或润肤剂。该申请指出,增稠油自身(即增稠低粘度油),而非其中发现润肤剂(优选大尺寸小滴润肤剂)的增稠载体。
发明概述
在本发明中,申请人出人意料地发现,当存在润肤剂(即聚亚烷基二醇)的介质用增稠剂增稠时,润肤剂小滴被包埋于增稠的介质中,其能够更好地从皂条组合物中沉积润肤剂。具体而言,本发明涉及一种皂条组合物,其中,包埋的润肤剂(存在于增稠的载体组合物中)被插入(通过注射、挤出或共挤出)含表面活性剂的基础皂条组合物中,形成润肤剂易于由其沉积的浓缩区域或范围。所述的浓缩区域/条纹为肉眼可见的区域,其宽度范围为1微米至皂条的宽度,优选10微米至皂条宽度的一半;其长度为1微米至皂条长度,优选条纹沿整个皂条的长度。优选包含润肤剂的组合物将如图1所示使皂条形成条纹。
更具体地说,本发明包含一种皂条组合物,其包含:
(a)40-99wt%的表面活性剂,其选自皂、阴离子表面活性剂、非离子表面活性剂、两性表面活性剂、阳离子表面活性剂和其混合物;和
(b)1-60wt%的增稠载体,含润肤剂的组合物(条纹组合物),其包含:
(1)占润肤剂组合物20-80wt%的聚亚烷基二醇;
(2)占润肤剂组合物5-40wt%的增益剂;
(3)0.01-30wt%,优选5-20wt%,更优选5-10wt%的增稠剂;
(4)占润肤剂组合物0-10wt%的水;和
(5)占润肤剂组合物0-15wt%的脂肪酸/结构化剂(structure)和填充剂;
其中,所述的条纹组合物(b)包含平均微尺寸5微米或大于5微米的润肤剂小滴(上限定义为小滴不再溶解,但连续),和
其中,所述的包埋的润肤剂小滴存在于浓缩区域中(即,1微米至皂条宽度×1微米至皂条长度)。
表面活性剂体系可为纯皂表面活性剂体系,或者表面活性剂体系可包含:
(a)第一种合成表面活性剂,其为阴离子表面活性剂;和
(b)第二种合成表面活性剂,其选自与第一种表面活性剂不同的第二种阴离子表面活性剂、非离子表面活性剂、两性表面活性剂和其混合物。
特别优选的表面活性剂体系包含作为第一种阴离子表面活性剂的酰基羟乙基磺酸盐,以及磺基琥珀酸盐或甜菜碱表面活性剂或两者的混合物。
附图简述
图1为显示浓缩区域/条纹的示意图,所述浓缩载体/条纹包含在增稠的聚亚烷基二醇载体中加入其余皂条组合物的典型润肤剂(如硅氧烷)。
发明详述
本发明涉及一种新型皂条组合物,其中,存在润肤剂(润肤剂小滴的颗粒大小至少为5微米和更大)的聚亚烷基载体用增稠剂增稠,从而使载体的粘度大于800厘泊(cps),优选大于1500cps,更优选大于3000cps。从而,小滴易于被增稠的聚亚烷基二醇包埋。含润肤剂的组合物也可包含结构化助剂/填充剂,游离的脂肪酸和/或水。本发明进一步涉及皂条,其中,含润肤剂的组合物被插入基础皂条组合物(即含表面活性剂的部分)中,形成浓缩的、肉眼可见的区域,其中,发现沉积增强。相对于在混合、研磨和/或精制步骤中加入未包埋润肤剂的皂条,可以清楚地看出沉积增强。(注意:在与本申请同时申请的共同未决申请提出了润肤剂被包埋于增稠的载体中的组合物,但是,其中,载体是通过混合、研磨和/或精制过程加入载体,优选以分开的组合物加入)。
据信,通过采用包埋于增稠载体中的润肤剂,润肤剂将不能自由地与皂条中的其它疏水性物质接触,从而更可能沉积至皮肤上或其它基质上。
以下将更为详细地说明本发明。成条纹的润肤剂组合物聚亚烷基二醇
润肤剂相(条纹)的一个组分是聚亚烷基二醇载体。这种载体应占润肤剂组合物总量的约20-80wt%,优选约40-70wt%。优选聚亚烷基二醇的分子量大于4000至约100000,优选4000至20000,更优选4000至10000。据信,需要最小MW为约4000,从而使载体在室温下为固体。特别优选的载体为聚乙二醇,例如来自Union Carbide的Carbowax PEG 8000。增益剂
本发明的润肤剂或增益剂可为单一的增益剂组分,或者可为经载体加至加工物流中的增益剂化合物。进而,增益剂可为两种或多种化合物的混合物,其中的一种或全部可具有有益的方面。此外,增益剂自身可用作一种可望加至皂条组合物中的其它组分的载体。
增益剂可为一种“润肤油”,润肤油是指一种能软化皮肤(角质层)的物质,它通过延缓含水量减少而增加含水量并保持皮肤柔软。
优选的润肤剂包括:
(a)硅油、纯胶和其改性物,如直链和环状聚二甲基硅氧烷;氨基、烷基、烷芳基和芳基硅油;
(b)脂肪和油,包括天然脂肪和油,如西蒙得木油、豆油、米糠油、鳄梨油、杏仁油、橄榄油、芝麻油、桃仁油、蓖麻油、椰子油、貂油;可可脂、牛油、猪油;通过氢化上述油获得的硬化油;和合成的单、二和三酸甘油酯,如豆蔻酸甘油酯和2-乙基己酸甘油酯;
(c)蜡,如巴西棕榈蜡、鲸蜡、蜂蜡、羊毛脂和其衍生物;
(d)疏水性植物提取物;
(e)烃,如液体石蜡、凡士林、微晶蜡、地蜡、角鲨烯、姥鲛烷和矿物油;
(f)高级脂肪酸,如月桂酸、肉豆蔻酸、棕榈酸、硬脂酸、二十二烷酸、油酸、亚油酸、亚麻酸、羊毛酯酸、异硬脂酸和多不饱和脂肪酸(PUFA);
(g)高级醇,如月桂醇、鲸蜡酸、硬脂醇、油醇、二十二烷醇、胆甾醇和2-己基癸醇;
(h)酯,如辛酸鲸蜡酯、乳酸肉豆蔻酯、乳酸鲸蜡酯、肉豆蔻酸异丙酯、肉豆蔻酸肉豆蔻酯、棕榈酸异丙酯、己二酸异丙酯、硬脂酸丁酯、油酸癸酯、异硬脂酸胆甾醇酯、单硬脂酸甘油酯、二硬脂酸甘油酸、三硬脂酸甘油酯、乳酸烷基酯、柠檬酸烷基酯和酒石酸烷基酯;
(i)精油,如薄荷属植物、茉莉、樟脑、雪松、苦橙皮、黑麦(ryu)、松节、肉桂、香柠檬、柑橘属果树unshiu、菖蒲、松、熏衣草、月桂、丁香、日罗汉柏、桉树、柠檬、七瓣莲、百里香、薄荷、玫瑰、一串红、薄荷醇、桉树脑、丁子香、柠檬醛、香茅、龙脑、里哪醇、香叶醇、偶樱草、樟脑、百里酚、spirantol、蒎烯、柠檬烯和萜类化合物油;
(j)脂质,如胆甾醇、神经酰胺、蔗糖酯和假神经酰胺,如EP556,957所述;
(k)维生素,如维生素A和E,和维生素烷基酯,包括维生素C烷基酯;
(l)防晒霜,如辛基甲氧基肉桂酸盐酯(Parsol MCX)和丁基甲氧基苯甲酰基甲烷(Parsol 1789);
(m)磷脂;和
(n)上述组分的任意混合物。
特别优选的增益剂为硅氧烷,优选粘度大于约50000厘泊的硅氧烷。其实例之一为粘度约60000厘沲的聚二甲基硅氧烷。
另一种优选的增益剂为月桂酸苄酯。
通常,增益剂占含润肤剂组合物总量的约5-40wt%,优选10-35wt%。增稠剂
本发明的关键之处在于,聚亚烷基二醇载体用增稠剂增稠。尽管不希望受任何理论的限制,但据信,正是因为增稠剂使载体增稠,使得当润肤剂小滴被聚亚烷基二醇载体包埋时会使所述小滴“固定”。例如,如在附图中所述,当不使用增稠剂时,润肤剂将不会被聚亚烷基二醇载体“包容”,将得到一种不可加工的胶粘状杂物。
可采用的增稠剂的实例包括二氧化硅和淀粉。可采用的淀粉为水溶性淀粉,如麦芽糖糊精、聚乙烯蜡或石蜡,或部分可溶性淀粉,如马铃薯淀粉或玉米淀粉。所谓水溶性是指在水中10wt%或更大浓度的淀粉溶液可溶解以形成澄清或基本澄清的溶液(只有少量会使澄清的溶液产生半透明混浊性的不溶性杂质)。
特别优选的增稠剂为煅制二氧化硅。煅制二氧化硅通常这样制备:使四氯化硅蒸气在氢气和氧气火焰中水解。所述方法产生的颗粒约为7-30毫微米。
据信,巨大的表面积和成链能力可使其形成三维网络,这改变了流动性,即引起增稠。
增稠剂通常占有条纹组合物的0.01-30wt%,优选15-20wt%,首选5-10wt%。
如果采用煅制二氧化硅作增稠剂,应使用不超过10wt%的增稠剂。其它组分
润肤剂组合物包含0-10wt%,优选0-8wt%的水。
此外,富含润肤剂相可包含0-20wt%,优选2-15wt%的脂肪酸,即C8-C24脂肪酸。通常,这些脂肪酸为直链的饱和脂肪酸,当然,这并非必须的。脂肪酸有助于改善润肤剂组合物的磨损率,从而更好地与基础皂条组合物的磨损率匹配。
条纹组合物还可包含一种结构化助剂和/或填充剂,其可为如前所述的脂肪酸或酯衍生物;或优选直链和饱和的C8-C24醇或醚衍生物。皂条相
本发明的皂条也可包含一种皂条相(与润肤组合物分离的相),该皂条相包含表面活性剂、结构化助剂/填充剂、游离脂肪酸和水。
表面活性剂体系包含约5-90wt%的一种表面活性剂体系,其中,表面活性剂选自皂(包括纯皂表面活性剂体系)、阴离子表面活性剂、非离子表面活性剂、两性表面活性剂/两性离子表面活性剂、阳离子表面活性剂和其混合物。表面活性剂体系
本文中术语“皂”为其常规含义,即脂族烷烃或链烯烃一元羧酸的碱金属或链烷醇铵盐。钠,钾,单、二和三乙醇胺阳离子或其组合适用于本发明的目的。通常,钠皂用于本发明的组合物中,但约1wt%至约25wt%的皂可为钾皂。本发明中采用的皂为公知的具有约12至22个碳原子(优选约12至约18)的天然或合成脂肪酸(链烷酸或链烯酸)的碱金属盐。它们可为具有约12至约22个碳原子的丙烯酸烃的碱金属羧酸盐。
具有椰油脂肪酸分布的皂可提供宽分子量范围的较低分子量端。那些具有花生油或菜子油或其氢化衍生物脂肪酸分布的皂可提供宽分子量范围的较高分子量端。
优选采用具有椰子油或牛油或其混合物脂肪酸分布的皂,其原因是其为更易于得到的脂肪。在椰油皂中具有至少12个碳原子的脂肪酸的比例为约85%。当采用椰油和脂肪如牛油、棕榈油或非热带硬果油或脂肪(其中,主链长为C16和更长)时该比例更大。优选用于本发明组合物的皂具有至少约85%具有约12-18个碳原子的脂肪酸。
用于皂中的椰油可被其它“高吸引力“high alluric””油全部代替或部分代替,即,总脂肪酸中其中至少50%由月桂酸或肉豆蔻酸和其混合物组成。这些油的一般实例为椰油类的热带硬果油。例如,它们包括:棕榈仁油、巴巴苏仁油、小冠椰子油、星实椰油、羽叶棕榈果油、星石榈油、价波特仁油、khakan kernel oil、地咖硬果油和肉豆蔻脂。
优选的皂为约15%至约20%的椰子油与约80%至约85%牛油的混合物。这些混合物包含约95%的具有约12至约18个碳原子的脂肪酸。皂可由椰子油制备,在此情形下,脂肪酸含量为C12-C18链长的约85%。
根据市场可接受的标准,皂可包含不饱和基团。但是,通常应避免过度的不饱和性出现。
皂可由经典的锅形沸腾法或现代连接皂生产法制备,其中,天然脂肪和油如牛油或椰子油或其等价物用碱金属氢氧化物进行皂化,皂化过程采用本领域技术人员公知的方法。另外,皂也可通过用碱金属氢氧化物或碳酸盐来中和脂肪酸如月桂酸(C12)、肉豆蔻酸(C14)、棕榈酸(C16)或硬脂酸(C18)制得。
可以采用的阴离子洗涤剂可为脂族磺酸盐,如伯烷(如C8-C22)磺酸盐、伯烷(如C8-C22)二磺酸盐、C8-C22链烯磺酸盐、C8-C22羟基烷磺酸盐或烷基甘油基醚磺酸盐(AGS);或芳族磺酸盐,如烷基苯磺酸盐。
阴离子表面活性剂也可为烷基硫酸盐(如C12-C18烷基硫酸盐)或烷基醚硫酸盐(包括烷基甘油基醚硫酸盐)。烷基醚硫酸盐为具有下式的那些:
RO(CH2CH2O)nSO3M
其中,R为具有8-18个碳原子,优选具有12-18个碳原子的烷基或链烯基,n为大于1.0的平均值,优选大于3;M为增溶性阳离子,如钠、钾、铵或取代的铵。优选月桂基醚硫酸铵和钠。
阴离子表面活性剂也可为烷基磺基琥珀酸盐(包括单和二烷基,如C6-C22磺基琥珀酸盐);烷基和酰基牛磺酸盐,烷基和酰基肌氨酸盐,磺基乙酸盐,C8-C22烷基磷酸盐和磷酸盐,烷基磷酸酯和烷氧基烷基磷酸脂、酰基乳酸盐,C8-C22单烷基琥珀酸盐和马来酸盐,磺基乙酸盐,烷基葡糖苷和酰基羟乙基磺酸盐。
磺基琥珀酸盐可为具有下式的单烷基磺基琥珀酸盐:
R4O2CCH2CH(SO3M)CO2M;和
下式的酰胺-MEA磺基琥珀酸盐:
R4CONHCH2CH2O2CCH2CH(SO3M)CO2M
其中,R4为C8-C22烷基,M为增溶性阳离子。
肌氨酸盐通常由下式表示:
R1CON(CH3)CH2CO2M
其中,R1为C8-C22烷基,M为增溶性阳离子。
牛磺酸盐通常由下式表示:
R2CONR3CH2CH2SO3M
其中,R2为C8-C20烷基,R3为C1-C4烷基,M为增溶性阳离子。
特别优选的是C8-C18酰基羟乙基磺酸盐。这些酯是使碱金属羟乙基磺酸盐与具有6-18个碳原子且碘值小于20的混合脂族脂肪酸反应制备的。至少75%的混合脂肪酸具有12-18个碳原子,至多25%具有6-10个碳原子。
当采用酰基羟乙基磺酸盐时,其通常占皂条组合物总重量的约10wt%至约70wt%。优选该组分的含量为约30wt%至约60wt%。
其中,R为具有8-18个碳原子的烷基,m为整数1-4,X和Y为氢或1-4个碳原子的烷基,M+为一价阳离子,例如钠、钾或铵。
可用于本发明中的两性洗涤剂包括至少一个酸基。所述酸基可为羧酸基或磺酸基。两性洗涤剂包括季氮,因而,其是季酰氨酸。通常,它们应包括7-18个碳原子的烷基或链烯基。它们通常符合下述总结构式:其中,R1为7-18个碳原子的烷基或链烯基;R2和R3彼此独立地为1-3个碳原子的烷基、羟烷基或羧基烷基;m为2-4;n为0-1;X为被羟基取代或未取代的1-3个碳原子的亚烷基;和Y为-CO2-或-SO2-上式中,适宜的两性洗涤剂包括下式的初级甜菜碱:和下式的酰氨基甜菜碱:
其中m为2或3。
在上两式中,R1、R2和R3如前定义。R1具体可为由椰子得到的C12和C14烷基的混合物,从而,至少一半,优选至少四分之三的R1为具有10-14个碳原子。R2和R3优选甲基。
在这些式中,R1、R2和R3如前定义。
可用作本发明第二种组分的非离子表面活性剂具体包括具有疏水基团的化合物与活性氢原子反应得到的反应产物,例如,脂族醇、酸、酰胺或烷基酚与烯化氧(特别是单独采用环氧乙烷或采用环氧丙烷)反应产物。具体的非离子洗涤剂化合物为烷基(C6-C22)酚环氧乙烷缩合物,脂族(C8-C18)直链或支链伯或仲醇与环氧乙烷的缩合产物,环氧丙烷与乙二胺的反应产物再和环氧乙烷进行缩合得到的产物。其它所谓非离子洗涤剂化合物包括长链叔胺氧化物、长链叔膦氧化物和二烷基亚砜。
非离子洗涤剂也可为糖酰胺,如多糖酰胺。具体而言,表面活性剂可为US 5,389,279(Au等)所述乳糖酰胺之一,该文献引入本文作为参考;或者为US 5,009,814(Kelkenberg)所述糖酰胺之一,该文献也引入本文作为参考。
阳离子洗涤剂的实例为季铵化合物,如烷基二甲基铵卤化物。
其它可采用的表面活性剂如US3,723,325(Parran Jr.)和下述文献所述:“表面活性剂和洗涤剂”(Vol. I & II),Schwartz,Perry &Berch,这两篇文献均引入本文作为参考。
虽然皂条可为纯皂条,但优选这种基片(形成皂中表面活性剂体系)的表面活性剂体系包含:
(a)第一种合成表面活性剂,其为阴离子表面活性剂;和
(b)第二种合成表面活性剂,其选自与第一种表面活性剂不同的第二种阴离子表面活性剂、非离子表面活性剂、两性表面活性剂和其混合物。
第一种阴离子表面活性剂可为如上所述任一种阴离子表面活性剂,但优选如上所述的C8-C18羟乙基磺酸盐。优选酰基羟乙基磺酸盐占总皂条组合物的10-90wt%。
第二种表面活性剂优选为磺基琥珀酸盐,甜菜碱或它们的混合物。第二种表面活性剂或表面活性剂的混合物通常占总皂条组合物的1-10%。特别优选的组合物包含足量的磺基琥珀酸盐以使其占总皂条组合物的3-8%,包含足量的甜菜碱以使其占总皂条组合物的1-5%。
皂条相也包含0.1-20%的水,优选1-15wt%的水。
皂条相还可包含0.1-80wt%,优选5-75wt%的结构化助剂和/或惰性填充剂。这种结构化助剂可用于增强皂条的整体性,改善加工性能,并增强所需的用户感觉的外观。
结构化助剂通常为长链,优选直链和饱和的(C8-C24)脂肪酸或其酯衍生物;和/或支化的长链,优选直链和饱和的(C8-C24)醇或其醚衍生物。
优选的皂结构化助剂为分子量2000-20000的聚亚烷基二醇,优选分子量为3000-10000。这些PEG可商购,如购自Union Carbide商品名CARBOWAX SENTRY PEG 8000或PEG 4000的那些。
其它可用作结构化助剂或填充剂的组分包括淀粉,优选水溶性淀粉,如麦芽糖糊精、聚乙烯蜡或石蜡。
结构化助剂也可选自用疏水基团改性的水溶性聚合物,如EP-PO嵌段共聚物,疏水性改性PEG,如POE(200-甘油基-硬脂酸酯),glucam DOE 120(PEG甲基葡萄糖二油酸酯),以及Hodg CSA-102(PEG-150硬脂酸酯),和来自Rewo Chemicals的Rewoderm(PEG改性的椰油酸(cocoate)、棕榈酸或牛油酸(tallowate)的甘油酯)。
其它可采用的结构化助剂包括Amerchol Polymer HM 1500(nonoxynyl hydroethyl纤维素)。加工方法
通常,在混合器中在约50-110℃下将各成分混合1-60分钟,再在冷却辊中冷却,形成限定皂条相的皂片(chips)。各成分的加入次序并不重要。
然后,可对皂片重新精制(如,加工成更柔顺的基料),压条或挤压成小条,冲压并切割。
可以各种方式,包括将这种润肤剂组合物挤出或共挤出进入基础组合物中将条纹/润肤剂组合物插入基础皂条组合物中。
例如,将润肤剂组合物挤出进入基础皂条中,从而形成一种浓缩区域,该区域可从1微米延伸至整个宽度,优选1至1/2皂条宽度;和从1微米延伸至基础皂条的整个长度。该情形的一个实例如图1所示。
以下的实施例用于进一步说明本发明,但它们并非对本发明的任何限定。
实施例方案
按照下述过程测量硅氧烷:
采用公知的ICP法进行分析(电感耦合氩等离子体)。该过程需要涉及用二甲苯进行提取的步骤,因而,该过程通常仅在试管内进行。ICP技术采用了Thermo Jarrell Ash Scan 25,并在251.612nm下进行测量。以下将给出其它的ICP测量参数。
处理过程如下:
在处理前,将猪皮剃毛,切皮,并切成25cm块。将皮肤试样通过磨擦皂条试样10次,在正面和反面移动。在皮肤上形成的液体起皂泡30秒,然后用调节至90-95°F的水漂洗10秒。将处理过的皮试样放置在一个硼硅酸盐闪烁小瓶中,在小瓶内含有10ml的二甲苯。将试样放置在平台摇动器上1小时以提取硅氧烷。在提取后,从小瓶中除去猪皮,提取液用ICP技术进行分析。试样溶液针对10pm硅氧烷标准样进行测试。所测量的是硅氧烷的沉积(或各种润肤剂),单位为百万分之一。
用于测量二甲苯中硅氧烷的典型ICP测量参数
火炬气体流量 | 高 |
辅助气体流量 | 1.5L/min |
分析仪泵速 | 0.9m L/min |
雾化器压力 | 21psi |
观察高度 | 负载池上12mm |
等离子体功率 | 1750W |
波长 | 251.612nm |
狭缝高度 | 6mm |
集成时间 | 4sec |
测得的组合物中增益剂(如硅氧烷)沉积物表示为:
(1)皂/合成皂条,其中,将润肤剂(硅氧烷)加至混合器中(在压条和挤出前);
(2)如(1)中的皂/合成皂条,其中,包埋的硅氧烷作为条纹在共挤出过程中或挤出之后加入;
(3)纯皂条组合物,其中,包埋的硅氧烷作为条纹在挤出过程中或挤出之后加入;和
(4)液体皂组合物。
皂条(1)和(2)的组成如下:
组分 | wt% |
烷基醚磺酸盐 | 1-5 |
皂 | 5-10 |
酰基羟乙基磺酸盐 | 40-60 |
碱金属硬脂酸盐 | 1-5 |
水和杂质 | 10-15 |
皂条(3)为纯皂皂条,包含约85-92%的皂和约8-15%的水。
液体皂(3)的组成如下:
组分 | wt% |
椰油酰氨丙基甜菜碱 | 5-10 |
酰基羟乙基磺酸盐 | 3-8 |
月桂醚硫酸钠 | 1-3 |
硅氧烷 | 3-8 |
硫酸铵 | 1-3 |
水和杂质 | 至平衡 |
用于上述配方(2)和(3)的条纹如下:
(1)56.7% PEG 8000;
(2)15%聚二甲基硅氧烷(10000厘沲);和
(3)麦芽糖糊精。
加条纹的皂条按下述过程制取:
将皂或合成洗涤剂切开使沟槽占皂条一侧的1/3(见图1)。沟槽位于皂条一侧的中心,贯通整个皂条。然后,将薄纸板片固定至皂条的端部,从而它们将沟槽的端部塞住,形成一个在其内形成条纹的模子。然后,将熔化的润肤剂/聚亚烷基二醇物料倒入沟槽中,使其冷却并硬化。再将薄纸板末端取出,将含有条纹的皂条表面沙磨至平坦光滑。
实施例1
采用如上所述的组合物(1)-(4),沉积结果如下:
组成 | 沉积(g/cm3) |
皂条(1)合成皂条组合物(2)具有5%非包埋PDMS的上述皂条组合物 | 0.55±0.33 |
皂条(2)合成皂条组合物(2)具有包埋于润肤剂条纹中的PDMS的上述皂条组合物 | 1.15±0.58 |
皂条(3)如上所述的纯皂皂条(3) | 2.03±0.67 |
如上所述的液体皂组合物(4) | 2.14±0.62 |
上表清楚地表明,与未采用条纹制备的皂相比,采用了条纹的皂/合成皂沉积了更大量的硅氧烷,前者组合物(1)沉积0.55±0.33g/cm3,而后者沉积1.15±0.58g/cm3。而由纯皂(组合物3)得到更大的沉积,甚至达到在液体皂(4)中可见的沉积水平。实施例2
本申请人采用了实施例1的皂/合成组合物作为皂基或纯皂基,并挤出/共挤出增益条纹或混合皂片和增益皂片,增益条纹或皂片具有下述组成:
33%月桂酸苄酯(润肤剂/增益剂)
3%煅制二氧化硅;和
64% PEG 8000
沉积的结果(在处理的猪皮上)如下:
皂条 | 沉积 |
具有增益条纹的挤出/共挤出的皂/合成皂片 | 11.2ppm |
与增益皂片混合的皂/合成皂片 | 14.1ppm |
具有增益条纹的挤出/共挤出的纯皂片 | 10.4ppm |
将皂或合成洗涤剂切开使沟槽占皂条一侧的1/3(见图1)。沟槽位于皂条一侧的中心,贯通整个皂条。然后,将薄纸板片固定至皂条的端部,从而它们将沟槽的端部塞住,形成一个在其内形成条纹的模子。然后,将熔化的润肤剂/聚亚烷基二醇物料倒入沟槽中,使其冷却并硬化。再将薄纸板末端取出,将含有条纹的皂条表面沙磨至平坦光滑。
本实施例清楚地表明,二氧化硅如煅制二氧化硅也可用作聚亚烷基二醇增稠物质。
实施例3
本申请人再将使用纯皂或合成皂基与增益条纹或增益皂片结合。
当采用条纹时,条纹配方如下:
30% PDMS 100000(硅氧烷润肤剂)
23%麦芽糖糊精(增稠剂);和
46.7% PEG
当采用增益皂片时,时,配方如下:
33% PDMS 100000
3%煅制二氧化硅;和
64% PEG
皂片以30%皂条掺入。
此外,实施例1的液体配方用于进行比较。
用配方处理猪皮的结果如下:
配方 | 沉积 |
具有条纹的皂/合成皂 | 13.9ppm |
具有增益条纹的纯皂 | 28.0ppm |
具有增益皂片的皂/合成皂 | 6.5ppm |
液体皂 | 2.14ppm |
结果清楚地表明,相对于液体有强烈的沉积,以及采用条纹有优异的沉积。来自纯皂条的沉积更优于皂/合成皂。相对于实施例1的更高的沉积结果是由于在各种试验间的变化。但是,重要的是,在同一组实验内显示出差异,这是因为,这些均承受着相同的日常条件。
实施例4
脂肪酸被掺入纯皂条中,采用下述条纹材料:
30% PDMS 100000
40% PEG 8000
20%麦芽糖糊精
10%脂肪酸(硬脂酸/棕榈酸掺混物)
采用相同的测量技术,发现下述结果:
皂条 | 沉积 |
具有条纹的纯皂条(无脂肪酸) | 52.63ppm |
具有条纹的纯皂条(包含脂肪酸) | 17.63ppm |
该实施例表明,可加入疏水性物质(例如,以助磨损速率)而不会消除沉积。
Claims (8)
1、一种皂条组合物,其包含:
(a)40-99wt%的表面活性剂;
(b)1-60wt%的包含润肤剂组合物,其包含:
(1)占润肤剂组合物20-80wt%的聚亚烷基二醇;
(2)占润肤剂组合物5-40wt%的增益剂;
(3)占润肤剂组合物0.1-30wt%的增稠剂;
(4)占润肤剂组合物0-10wt%的水;和
(5)占润肤剂组合物0-15wt%的结构化剂/填充剂;
其中,所述的润肤剂被包埋于用增稠剂增稠的载体中,从而载体的粘度等于或大于8000cps;
其中,润肤剂小滴的尺寸至少为5微米;和
其中,当注射、挤出、共挤出或插入所述皂条组合物中时所述包埋的润肤剂小滴从分开制备的载体组合物中浓缩,形成区域,其中所述区域宽度为1微米至皂条宽和长度为1微米至皂条长。
2、根据权利要求1的组合物,其中,所述的表面活性剂体系包含:
(a)第一种合成表面活性剂,其为阴离子表面活性剂;和
(b)第二种合成表面活性剂,其选自与第一种表面活性剂不同的第二种阴离子表面活性剂、非离子表面活性剂、两性表面活性剂和其混合物。
3、根据权利要求2的组合物,其中,第一种阴离子表面活性剂为酰基羟乙基磺酸盐。
4、根据权利要求2或3的组合物,其中,第二种表面活性剂为磺基琥珀酸盐、甜菜碱或其混合物。
5、根据上述任一项权利要求的组合物,其中,载体为MW值为4000-100000的聚亚烷基二醇,优选4000-20000,例如,4000-10000。
6、根据上述任一项权利要求的组合物,其中,增稠剂为煅制二氧化硅或水溶性淀粉,如麦芽糖糊精。
7、根据上述任一项权利要求的组合物,其中,加入的基料包含结构化剂/填充剂,其选自C8-C20脂肪酸或酯衍生物;C8-C24醇或醚衍生物,MW为2000-20000的聚亚烷基二醇,淀粉和蜡。
8、根据上述任一项权利要求的组合物,其中,增稠的载体的粘度大于约1500cps,优选大于3000cps。
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-
1997
- 1997-03-28 US US08/828,443 patent/US5965501A/en not_active Expired - Lifetime
-
1998
- 1998-03-18 KR KR1019997008785A patent/KR20010005717A/ko not_active Application Discontinuation
- 1998-03-18 HU HU0001728A patent/HUP0001728A3/hu unknown
- 1998-03-18 WO PCT/EP1998/001771 patent/WO1998044086A1/en active IP Right Grant
- 1998-03-18 EP EP98924080A patent/EP0972008B1/en not_active Expired - Lifetime
- 1998-03-18 PL PL98335909A patent/PL335909A1/xx unknown
- 1998-03-18 AU AU76408/98A patent/AU736281B2/en not_active Ceased
- 1998-03-18 ID IDW991118D patent/ID24615A/id unknown
- 1998-03-18 BR BR9808438-0A patent/BR9808438A/pt not_active IP Right Cessation
- 1998-03-18 DE DE69825575T patent/DE69825575T2/de not_active Expired - Lifetime
- 1998-03-18 CA CA002285022A patent/CA2285022C/en not_active Expired - Fee Related
- 1998-03-18 JP JP54113298A patent/JP4347419B2/ja not_active Expired - Fee Related
- 1998-03-18 ES ES98924080T patent/ES2227837T3/es not_active Expired - Lifetime
- 1998-03-18 CN CN98805517A patent/CN1272874A/zh active Pending
- 1998-03-23 IN IN166BO1998 patent/IN190466B/en unknown
- 1998-03-27 ZA ZA9802612A patent/ZA982612B/xx unknown
- 1998-03-27 AR ARP980101408A patent/AR012566A1/es active IP Right Grant
- 1998-03-27 CO CO98017239A patent/CO4950589A1/es unknown
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1999
- 1999-04-30 US US09/302,759 patent/US6174845B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101332155B (zh) * | 2007-06-26 | 2013-08-21 | 荷兰联合利华有限公司 | 具有片状内含物的挤出型个人洗涤皂条 |
Also Published As
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AR012566A1 (es) | 2000-11-08 |
AU7640898A (en) | 1998-10-22 |
IN190466B (zh) | 2003-08-02 |
US6174845B1 (en) | 2001-01-16 |
DE69825575D1 (de) | 2004-09-16 |
US5965501A (en) | 1999-10-12 |
EP0972008B1 (en) | 2004-08-11 |
CA2285022A1 (en) | 1998-10-08 |
DE69825575T2 (de) | 2005-02-03 |
EP0972008A1 (en) | 2000-01-19 |
BR9808438A (pt) | 2000-05-23 |
ES2227837T3 (es) | 2005-04-01 |
JP4347419B2 (ja) | 2009-10-21 |
ID24615A (id) | 2000-07-27 |
ZA982612B (en) | 1999-09-27 |
HUP0001728A3 (en) | 2001-05-28 |
CO4950589A1 (es) | 2000-09-01 |
HUP0001728A2 (hu) | 2000-11-28 |
WO1998044086A1 (en) | 1998-10-08 |
KR20010005717A (ko) | 2001-01-15 |
JP2001517258A (ja) | 2001-10-02 |
AU736281B2 (en) | 2001-07-26 |
PL335909A1 (en) | 2000-05-22 |
CA2285022C (en) | 2008-02-26 |
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