CN118055756A - 用于增稠化妆品和洗涤剂组合物的聚合物组合物 - Google Patents
用于增稠化妆品和洗涤剂组合物的聚合物组合物 Download PDFInfo
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- CN118055756A CN118055756A CN202280065108.1A CN202280065108A CN118055756A CN 118055756 A CN118055756 A CN 118055756A CN 202280065108 A CN202280065108 A CN 202280065108A CN 118055756 A CN118055756 A CN 118055756A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- A61K8/8158—Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers
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- A—HUMAN NECESSITIES
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- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
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Abstract
本发明涉及一种用于增稠化妆品或洗涤剂组合物的聚合物组合物,所述聚合物组合物包含至少一种聚合物,用至少一种不稳定交联剂和至少一种稳定交联剂交联,或至少两种聚合物,其中至少一种聚合物用至少一种不稳定交联剂交联,以及至少一种聚合物用至少一种稳定交联剂交联。根据本发明的聚合物组合物使得能够随时间推移而保持化妆品或洗涤剂组合物的粘度。
Description
技术领域
本发明涉及用于增稠化妆品或洗涤剂组合物的聚合物组合物。
背景技术
例如织物软化剂的化妆品和洗涤剂组合物在其保质期和/或消费者家中储存期间存在稳定性问题。这些不稳定性与组合物中电解质含量随时间推移而增大相关。这些电解质源于组合物中例如季胺酯的所含成分的副反应。时间和温度是影响这些副反应的主要参数。
已知通过反相乳液获得的增稠聚合物,例如基于季铵化二甲氨基乙基((M)ADAME)(甲基)丙烯酸酯的聚合物,用于稳定化妆品和洗涤剂组合物。稳定特性是由水合聚合物(或水凝胶)的紧密堆叠提供的,其通过电荷排斥机制增稠化妆品或洗涤剂组合物的水相。获得的粘度范围取决于水凝胶产生的体积,而水凝胶本身取决于聚合物的结构,更准确地,取决于构成它的聚合物网络中的交联密度。
通过这种机制获得的粘度呈现出对稳定介质中存在的电解质的较高敏感性。由前所述副反应产生的电解质的量导致粘度下降,并因此导致化妆品和洗涤剂组合物的稳定性随时间推移而下降。
电解质是带正或负荷的化学物质,能够携带或传导电荷,通常存在于溶液中。
目前,为了补偿粘度或稳定性的损失,制造商会在化妆品和洗涤剂组合物中过量添加增稠聚合物。该解决方法显然不能令人满意,从而申请人寻求可替代方案。
本发明要解决的问题在于提供一种用于化妆品和洗涤剂组合物的有效增稠剂,能够补偿所述化妆品和洗涤剂组合物随时间推移而产生的粘度损失。
本发明涉及一种用于增稠化妆品和洗涤剂组合物的聚合物组合物,其可以明显降低所述组合物随时间推移而产生的粘度损失,优选地,随时间推移而保持其粘度。
本发明提供的最佳性能使得能够减少增稠聚合物的用量,从而减少与这些聚合物的制造和使用相关的例如CO2的温室气体的排放。
发明内容
本发明涉及一种聚合物组合物,用于增稠化妆品或洗涤剂组合物,所述聚合物组合物包含:
-至少一种聚合物,用至少一种不稳定交联剂和至少一种稳定交联剂交联,
-至少两种聚合物,其中至少一种聚合物用至少一种不稳定交联剂交联,以及至少一种聚合物用至少一种稳定交联剂交联。
本发明还涉及一种化妆品或洗涤剂组合物,包含根据本发明的至少一种增稠聚合物组合物。本发明还涉及一种方法,用于增稠含有根据本发明的至少一种增稠聚合物组合物的化妆品或洗涤剂组合物。
最后,本发明涉及一种方法,用于随时间推移而保持含有根据本发明的至少一种增稠聚合物组合物的化妆品或洗涤剂组合物的粘度。
尽管化妆品或洗涤剂组合物中的电解质浓度会增加,根据本发明的聚合物组合物能够随时间推移而保持其恒定的粘度。因此不再需要过量使用增稠聚合物。
表述“随时间推移而保持粘度”指使用根据本发明聚合物组合物增稠的化妆品或洗涤剂组合物的粘度在至少一年、优选地至少三年的时间段内保持相同值。该表述还包括,相对不包含根据本发明聚合物组合物的化妆品或洗涤剂组合物,粘度稍微降低(初始值的最大15%,优选最大10%,更优选最大5%)的情况,进一步包括粘度明显降低(至少50%,优选至少80%)的情况,而这发生在一年的时间段之后。
不受限于任何理论,通过添加不稳定交联剂与稳定交联剂的组合,以补偿由于介质中电解质浓度增加而导致的粘度下降。当将聚合物组合物添加到化妆品或洗涤剂组合物中时,如上所述,其形成亦被称为水凝胶的水合聚合物的紧凑堆积。随时间的推移以及在温度的作用下,不稳定交联剂的水解(去交联)使得化妆品或洗涤剂组合物中的水凝胶体积增大,从而保持在所述化妆品或洗涤剂组合物中占据的体积比例。因此,化妆品或洗涤剂组合物的粘度随时间推移得以保持。
使用布氏(Brookfield)仪器测量粘度,测量在20℃下进行。本领域技术人员已知如何根据待测量其粘度的流体的粘度调整布氏粘度计的模块,并且调整模块的速度。在本详细说明的以下部分中,该粘度被称为布氏粘度或简称为粘度。
在第一种可选实施例中,根据本发明的聚合物组合物包括至少一种聚合物,用至少一种不稳定交联剂和至少一种稳定交联剂交联。优选地,所述聚合物用单一不稳定交联剂和单一稳定交联剂交联。可以理解,可用多种不稳定交联剂和多种稳定交联剂交联。
在第二种可选实施例中,根据本发明的聚合物组合物包含至少一种聚合物,用至少一种不稳定交联剂交联和用至少一种稳定交联剂交联。
根据本发明的交联聚合物优选为合成聚合物。其优选地由具有烯属不饱和度的至少一种单体获得。其优选地为由至少一种非离子单体和/或至少一种阴离子单体和/或至少一种阳离子单体和/或两性离子单体获得的聚合物。
不稳定交联剂是指在被纳入聚合物结构后,可以通过一定的热条件和/或随着时间推移而降解以降低交联聚合物交联度的交联剂。储存条件、温度和电解质的出现会导致不稳定交联剂中的键断裂,而不会实质性地降解聚合物主链的其余部分。
更具体地,在本发明中,不稳定交联剂是指在50℃至100℃之间的温度下,在5至10天内降解至少10mol%的交联剂。
不稳定交联剂降解程度的测定可以通过与标准物的比较测量来完成。在包含不稳定交联剂的重量为聚合物的1%、pH值为2.5的溶液中进行测量。
不稳定交联剂可以选自二丙烯酰胺和甲基丙烯酰胺,例如哌嗪二丙烯酰胺,可以选自二丙烯酸酯、三丙烯酸酯、四丙烯酸酯,或二甲基丙烯酸酯、三甲基丙烯酸酯、四甲基丙烯酸酯,例如乙二醇二丙烯酸酯、聚乙二醇二丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、乙氧基化三羟甲基三丙烯酸酯、乙氧基化季戊四醇四丙烯酸酯以及二官能或三官能酸的乙烯基酯或烯丙酯。
不稳定交联剂还可以选自二丙烯酰胺和甲基丙烯酰胺,例如哌嗪二丙烯酰胺,可以选自丙烯酸酯或甲基丙烯酸酯、乙二醇二丙烯酸酯、聚乙二醇二丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、三羟甲基丙烷三丙烯酸酯、乙氧基化季戊四醇四丙烯酸酯以及二官能或三官能酸的乙烯基酯或烯丙酯。不稳定交联剂优选选自水溶性二丙烯酸酯,例如PEG 200的聚乙二醇二丙烯酸酯、PEG 400的聚乙二醇二丙烯酸酯、PEG 600的聚乙二醇二丙烯酸酯、PEG 1000的聚乙二醇二丙烯酸酯、乙二醇二丙烯酸酯、二乙二醇二丙烯酸酯、三乙二醇二丙烯酸酯、四乙二醇二丙烯酸酯和多元醇的多官能乙烯基衍生物,例如乙氧基化三羟甲基(9-20)三丙烯酸酯。
二丙烯酸酯、三丙烯酸酯、四丙烯酸酯或二甲基丙烯酸酯、三甲基丙烯酸酯、四甲基丙烯酸酯优选通过包含至少两个OH官能团、优选两个、三个或四个OH官能团的化合物与丙烯酸或甲基丙烯酸之间的酯化获得。
基于总单体,交联聚合物中不稳定交联剂的量优选地在100ppm和200,000ppm之间,更优选地在200ppm和100,000ppm之间,甚至更优选地在300ppm和70,000ppm之间,甚至更优选地在400ppm和50,000ppm之间,甚至更优选地在500ppm和30,000ppm之间。ppm以重量表示。
稳定交联剂是指在温度条件下或随时间推移不会降解的交联剂。稳定交联剂有助于控制水凝胶的膨胀构象。更具体地,稳定交联剂不同于如上所定义的不稳定交联剂,即,在50℃和100℃之间的温度下、在5至10天内的降解小于1mol%。
稳定交联剂可以选自亚甲基双丙烯酰胺、二烯丙基胺、三烯丙基胺、二乙烯基砜、二甘醇二烯丙基醚以及相似物。稳定交联剂优选为亚甲基双丙烯酰胺。
基于总单体,交联聚合物中的稳定交联剂的量优选地在1ppm和2,000ppm之间,更优选地在10ppm和1,500ppm之间,甚至更优选地在20ppm和1,000ppm之间,甚至更优选地在100ppm和1,000ppm之间。ppm以重量表示。
在本发明范围内可用的非离子单体尤其选自水溶性乙烯基单体组。属于此类的优选单体例如为丙烯酰胺、甲基丙烯酰胺、N-异丙基丙烯酰胺、N,N-二甲基丙烯酰胺以及N-羟甲基丙烯酰胺。另外,还可以使用N-乙烯基甲酰胺、N-乙烯基乙酰胺、N-乙烯基吡啶、N-乙烯基吡咯烷酮、丙烯酰吗啉(ACMO)、甲基丙烯酸缩水甘油酯、甲基丙烯酸甘油酯以及双丙酮丙烯酰胺。优选的非离子单体是丙烯酰胺。
一个或多个阴离子单体优选选自丙烯酸、甲基丙烯酸、衣康酸、马来酸、丙烯酰胺基叔丁基磺酸(也称为ATBS或2-丙烯酰胺基-2-甲基丙磺酸)、乙烯基磺酸、乙烯基膦酸,所述阴离子单体是未成盐的、部分或完全成盐的、以及甲基丙烯酸3-磺基丙酯的盐。盐化形式有利地对应于碱金属盐(Li、Na、K等)、碱土金属盐(Ca、Mg等)或铵盐、尤其是季铵盐。优选的阴离子单体是ATBS和丙烯酸和/或它们的盐。
在上下文中,例如MADAME和ATBS的阳离子单体和阴离子单体包括非盐化、盐化、部分或完全盐化的形式。
可以在本发明的上下文中使用的阳离子单体尤其选自通过成盐或季铵化而具有季铵官能团的丙烯酰胺、丙烯酸、乙烯基、烯丙基或马来酸类型的单体。可以特别提及但不限于:季铵化的丙烯酸二甲氨基乙酯(ADAME)、季铵化的甲基丙烯酸二甲氨基乙酯(MADAME)、二甲基二烯丙基氯化铵(DADMAC)、丙烯酰胺基丙基三甲基氯化铵(APTAC)和甲基丙烯酰胺基丙基三甲基氯化铵(MAPTAC)。优选的阳离子单体是季铵化的丙烯酸二甲氨基乙酯(ADAME)、季铵化的甲基丙烯酸二甲氨基乙酯(MADAME),优选使用氯离子进行季铵化。还可以在本发明范围内使用一个或多个两性离子单体;它们将阴离子和阳离子电荷结合在单个且同一单体上。它们尤其可以选自甜菜碱、磺基甜菜碱、磺基甜菜碱、磷酸甜菜碱和羧基甜菜碱类型的单体。作为两性离子单体的实例,可涉及磺丙基二甲基铵乙基甲基丙烯酸酯、磺丙基二甲基铵丙基甲基丙烯酰胺、磺丙基2-乙烯基吡啶鎓以及磷酸基乙基三甲基铵乙基甲基丙烯酸酯。
根据本发明的交联聚合物优选为阳离子或阴离子聚合物。
当交联聚合物是阳离子时,其优选为阳离子均聚物,或包含至少一种阳离子单体和至少一种非离子单体的共聚物。在这种情况下,阳离子单体的量优选地在50和100mol%之间,更优选地在70和90mol%之间,和非离子单体的量优选地在0和50mol%之间,以及更优选地在10和30mol%之间。
当交联聚合物是阴离子时,其优选为阴离子均聚物或包含至少一种阴离子单体和至少一种非离子单体的共聚物。在这种情况下,阴离子性单体的量优选地在50和100mol%之间,以及非离子性单体的量优选地在0和50mol%之间。
在第二种可选实施例中,两种聚合物优选地具有相同的离子性。换句话说,如果用至少一种不稳定交联剂交联的聚合物是阳离子的,则用不稳定交联剂交联的聚合物也是阳离子的。一般而言,根据本发明的交联聚合物不需要开发特定的聚合方法。事实上,可以使用本领域技术人员已知的所有聚合技术来获得。这尤其可能涉及溶液聚合;凝胶聚合;沉淀聚合;乳液聚合(水相或反相);悬浮聚合;反应性挤出聚合;水包水聚合;或胶束聚合。
优选通过反相乳液聚合获得根据本发明的聚合物。优选地蒸馏反相乳液以获得占重量优选在3%和65%之间的聚合物浓度。
在第二种可选实施例中,优选彼此分开制备两种聚合物,然后混合以获得本发明的增稠聚合物组合物。一种相对于另一种的重量比优选地在10:90和90:10之间。当通过反相乳液单独制备聚合物时,优选地以适当比例混合两种反相乳液,然后对所得混合物进行蒸馏,从而获得占重量优选在3%和65%之间的聚合物浓度。
因此,优选地,本发明的聚合物组合物是反相乳液,而聚合物位于乳液的水滴中。
聚合通常是自由基聚合。自由基聚合包括使用UV、偶氮、氧化还原或热引发剂的自由基聚合以及受控自由基聚合(CRP)技术或基质聚合技术。
增稠聚合物组合物的实施可以根据化妆品和洗涤剂组合物的配制者的知识和实践来进行。本发明还涉及一种化妆品或洗涤剂组合物,包含根据本发明的至少一种增稠聚合物组合物。在本发明中,化妆品组合物还包括皮肤病学和药物组合物。它们通常具有水相。它们尤其被施用于皮肤或头发,并且通常呈水包油乳液形式,有时呈油包水形式,以形成例如霜剂或乳液。此类组合物例如可对应于抗衰老霜剂或乳液、须后护理剂、保湿霜、染发乳液、洗发剂、调理剂护发素、淋浴产品、清洁霜、又或防晒用的护肤膏或霜或乳液。霜剂与乳液的区别在于其较高的粘度。
增稠剂或流变调节剂被广泛用于这些组合物中,以使其感官特征(外观、应用)适应消费者的需求,同时也用于悬浮或稳定活性成分。
洗涤剂组合物可理解为用于清洁各种表面尤其是纺织纤维、各种硬表面如餐具、地板、窗户、木质表面、金属或复合材料表面的组合物。例如,此类组合物对应于用于手动或在洗衣机中洗涤衣服的洗涤剂、用于手动或用于洗碗机清洁餐具的产品、用于洗涤房屋内部如厨房设备、卫生间、家具、地板、窗户和其它通过洗涤剂产品。
添加到化妆品或洗涤剂组合物中的根据本发明的增稠聚合物组合物的量优选地在重量的0.01%和5%之间。,更优选地在重量的0.1%和3%之间。
在根据本发明的第一种可选实施例中,被添加到化妆品或洗涤剂组合物中的用至少一种不稳定交联剂和至少一种不稳定交联剂交联的聚合物的量优选地在重量的0.005%和3%之间,更优选地在重量的0.05%和2%之间。
在根据本发明的第二种可选实施例中,被添加到化妆品或洗涤剂组合物中的用至少一种不稳定交联剂交联的聚合物的量优选地在重量的0.0005%和2.7%之间,更优选地在重量的0.005%和1.8%之间,以及被添加到化妆品或洗涤剂组合物中的用至少一种稳定交联剂交联的聚合物的量优选地在重量的0.0005%和2.7%之间,更优选地在重量的0.005%和1.8%之间。
化妆品和洗涤剂组合物还含有本领域技术人员已知的其他成分,例如水、矿物油或植物油、有机溶剂、表面活性剂、化妆品或药物活性成分、维生素、螯合剂、润肤剂、保湿剂、植物提取物、防晒剂、洗涤剂或清洁助剂、荧光剂、发泡剂或抑泡剂、中和剂、pH调节剂、防腐剂、香料、遮光化合物、染料,列举但不限于此。技术人员已知如何以及使用什么成分来配制化妆品或洗涤剂组合物。对于化妆品组合物,可以参考申请文献FR2979821,以及对于洗涤剂组合物,可以参考文献FR2766838、FR2744131、EP0759966。
本发明还涉及用至少一种如前所述的增稠聚合物组合物增稠化妆品或洗涤剂组合物的方法。该方法包括通过本领域技术人员已知的技术实施根据本发明的聚合物组合物。因此,该方法包括将根据本发明的聚合物组合物添加到所述化妆品或洗涤剂组合物中的步骤。聚合物组合物的量如前所述。
本发明还涉及一种将根据本发明至少一种聚合物组合物作为化妆品或洗涤剂组合物增稠剂的应用。聚合物组合物的量如前所述。
本发明涉及一种方法,利用至少一种如前所揭示的增稠聚合物组合物来保持化妆品或洗涤剂组合物的粘度随时间推移不变。因此,该方法包括将根据本发明的聚合物组合物添加到所述化妆品或洗涤剂组合物中的步骤。聚合物组合物的量如前所述。
最后,本发明涉及一种将根据本发明至少一种聚合物组合物作为随时间推移而保持化妆品或洗涤剂组合物粘度的组合物的应用。聚合物组合物的量如前所述。
附图说明
图1是根据现有技术的粘度随时间推移的损失现象的示意图(上部),以及由于根据本发明聚合物组合物随时间推移而保持粘度的策略的示意图。
在图1的上部,由稳定交联剂获得的水凝胶初始直径为30μm,然后随着时间变化、电解质和温度的作用,其直径逐渐减小到20μm,继而10μm,这导致增稠介质的粘度下降。所呈现的电解质的增加减少了导致这种粘度损失的离子排斥,而离子排斥源自粘化效应。在图1的下部,由稳定交联剂和不稳定交联剂获得的聚合物水凝胶具有的初始尺寸为10μm,然后随着不稳定交联剂的水解(去交联)现象,其尺寸逐渐增加到20μm,然后增加到30μm,介质随时间推移变稠,从而导致粘度增加。随着时间的推移,粘度的增加补偿了从图1上部分观察到的粘度损失。
图2为在80℃下浓度为1%的聚合物溶液A至E的粘度演变图,以模拟在化妆品或洗涤剂组合物的储存过程中形成的电解质的行为。
具体实施方式
所有以ppm表示的量均为相对单体总重量。
实施例1(参照例):利用稳定交联剂进行反相乳液来合成阳离子聚合物(组合物A)通过在1L的烧杯中混合以下全部成分来制备水相:
-470.0g甲基氯化(在水中的重量百分比为75%)的丙烯酸二甲氨基乙酯溶液,
-60.0g丙烯酰胺溶液(在水中的重量百分比为50%),
-0.19g亚甲基双丙烯酰胺(541ppm),
-用柠檬酸溶液将pH调节至5.2+/-0.1。
通过在1L玻璃反应器中混合以下全部成分来制备有机相:
-20.0g脱水山梨糖醇单油酸酯,
-25.0g聚合物稳定剂(Hypermer 6212)
-210.0g白矿物油,
-63.0g脂肪烃(Isopar L)
在适度的机械搅拌下将水相逐渐转移至有机相中。然后对由此形成的预乳液进行1分钟的强剪切(Ultra Turax,IKA)。
然后使用氮气鼓泡将反相乳液脱气30分钟。
通过以10ml/h的流速加入1%重量的焦亚硫酸氢钠和叔丁基过氧化氢的水溶液来完成聚合反应。
一旦达到最高温度(绝热聚合),在冷却前将反应介质的温度保持60分钟。
然后将所得乳液在减压下蒸馏以除去水和挥发性有机溶剂,以在蒸馏后得到的产物中含有58%重量的聚合物活性材料。
最后,在结束步骤中,添加50.0g、6摩尔的乙氧基化十三醇类型的水包油乳化剂,以获得即用型聚合物液体分散体。
实施例2:利用不稳定和不稳定交联剂进行反相乳液来合成阳离子聚合物(1,100ppm不稳定交联剂,组合物B)
通过添加0.42g(1,100ppm)不稳定的聚乙二醇(200)二丙烯酸酯交联剂(PEG200DA,Sartomer SR 259)来重复实施例1的方案。
实施例3:利用不稳定和稳定交联剂进行反相乳液来合成阳离子聚合物(3,500ppm不稳定交联剂,组合物C)
通过将不稳定交联剂的量改变为1.33g(3,500ppm/活性成分)来重复实施例2的方案。
实施例4:利用不稳定和稳定交联剂进行反相乳液来合成阳离子聚合物(5,000ppm不稳定交联剂,组合物D)
通过将不稳定交联剂的量改变为1.91g(5,000ppm/活性成分)来重复实施例2的方案。
实施例4':利用不稳定交联剂进行反相乳液来合成阳离子聚合物(4,000ppm,组合物D')通过将不稳定交联剂的量改变为1.91g(5,000ppm)并且将稳定交联剂的量改变为0g来重复实施例2的方案。
实施例5:包含稳定交联剂的聚合物和包含不稳定交联剂的聚合物的组合(组合物E)组合物E是通过将组合物A(稳定交联剂)与组合物D’(不稳定交联剂)按照重量50%/50%混合,然后蒸馏两种组合物的混合物得到的。
实施例6:对组合物A至E的研究
聚合物溶液的制备和粘度测量
以1.0%商业乳液制备每种组合物A至E的溶液,将5.0g根据实施例1至5获得的相应液体分散体添加到酸化至pH=2.8+/-0.1(柠檬酸)的495.0g去离子水中,在半月形机械搅拌下以600RPM搅拌15分钟。
在RVT型布氏粘度计上以10RPM的剪切速度测量粘度。
粘度分布监测将每种组合物A至E的溶液置于80℃的烘箱中,以模拟聚合物随时间推移的加速老化,以及在洗涤剂或化妆品组合物的储存期间形成的电解质对其的影响。
在23℃+/-1℃的温度下随时间推移控制布氏粘度。粘度是在多天内测量的。
粘度分布监测结果总结于表1中。
表1
从该表可见,参考聚合物(组合物A)被观察到粘度下降,并且自第8天起加剧,最终在第34天后粘度损失达到37%。
对于组合物B至E(根据本发明),观察到,通过不稳定交联剂的降解,随时间推移而被观察到的粘度下降有所减缓并得到补偿。
Claims (12)
1.用于增稠化妆品或洗涤剂组合物的聚合物组合物,所述聚合物组合物包含:
-至少一种聚合物,用至少一种不稳定交联剂和至少一种稳定交联剂交联,
-至少两种聚合物,其中至少一种聚合物用至少一种不稳定交联剂交联,以及至少一种聚合物用至少一种稳定交联剂交联。
2.根据权利要求1所述的聚合物组合物,其特征在于,所述交联聚合物是由具有烯属不饱和度的至少一种单体获得的合成聚合物。
3.根据权利要求1或2中任意一项所述的聚合物组合物,其特征在于,所述不稳定交联剂选自二丙烯酰胺和甲基丙烯酰胺,例如哌嗪二丙烯酰胺,可以选自二丙烯酸酯、三丙烯酸酯、四丙烯酸酯,或二甲基丙烯酸酯、三甲基丙烯酸酯、四甲基丙烯酸酯,例如乙二醇二丙烯酸酯、聚乙二醇二丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、乙氧基化三羟甲基三丙烯酸酯、乙氧基化季戊四醇四丙烯酸酯以及二官能或三官能酸的乙烯基酯或烯丙酯。
4.根据权利要求1至3中任意一项所述的聚合物组合物,其特征在于,所述交联聚合物中不稳定交联剂的量基于单体的总摩尔数在100和200,000ppm之间。
5.根据权利要求1至4中任意一项所述的聚合物组合物,其特征在于,所述不稳定交联剂选自亚甲基双丙烯酰胺、二烯丙胺、三烯丙胺、二乙烯基砜、二甘醇二烯丙基醚。
6.根据权利要求1至5中任意一项所述的聚合物组合物,其特征在于,所述交联聚合物中稳定交联剂的量基于单体的总摩尔数在1和2,000ppm之间。
7.根据权利要求1至6中任意一项所述的聚合物组合物,其特征在于,所述交联聚合物是阳离子或阴离子聚合物。
8.根据权利要求1至7中任意一项所述的聚合物组合物,其特征在于,其为反相乳液的形式。
9.一种化妆品或洗涤剂组合物,包含如权利要求1至8中任意一项所述的至少一种聚合物组合物。
10.根据权利要求9的化妆品或洗涤剂组合物,其特征在于,所述组合物含有的聚合物组合物的量在其重量的0.01%和5%之间。
11.一种将根据权利要求1至8中任意一项所述的至少一种聚合物组合物作为增稠化妆品或洗涤剂组合物的组合物的应用。
12.一种将根据权利要求1至8中任意一项所述的至少一种聚合物组合物作为随时间推移而保持化妆品或洗涤剂组合物粘度的组合物的应用。
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