JP3874970B2

JP3874970B2 - Elastic mold

Info

Publication number: JP3874970B2
Application number: JP21457499A
Authority: JP
Inventors: 公徳平井; 輝喜大河原
Original assignee: Kose Corp
Current assignee: Kose Corp
Priority date: 1999-07-29
Filing date: 1999-07-29
Publication date: 2007-01-31
Anticipated expiration: 2019-07-29
Also published as: JP2001038740A

Description

【０００１】
【発明の属する技術分野】
本発明は弾性成形型に関し、更に詳しくは特定のフッ素化ポリエーテル骨格をもつフッ素系エラストマーを含有する樹脂によりつくられた弾性成形型およびこれを用いる成型品の製造方法に関する。
【０００２】
【従来の技術】
種々の成型品を、従来広く使用されている金属製の成形型に代え、天然ゴム、クロロプレンゴム、シリコンゴムなどの弾性材料でつくられた成形型、すなわち弾性成形型を用いて成形する方法が知られている。この成形方法は、弾性成形型の開口部から、該成形内に流動性の成形材料を充填し、次いで、加熱あるいは冷却するなどして成形材料を固化し、この固化した成形品を弾性成形型より取り出す方法である。この弾性成型法では、弾性成形型を空気圧差を利用するなどして拡張させ、成形品を型から剥がし、拡張した開口部より排出させることにより取り出しを行うが、当然、この弾性成形型は、繰返し何回も拡張、収縮しながら使用される。
【０００３】
この弾性成形方法では、成形型の製造コストが安価であり、また、離型のための逆テーパや抜け勾配を考慮することがないため、希望する種々のデザインの成形品を得る事ができ、また、割型で成形した場合のように表面に型跡を生じ外観を損なうことがないので、チョコレート、チーズ、ゼリー、かまぼこなどの成形に採用されているとともに、最近、固形状化粧品にも採用されてきている。
【０００４】
しかしながら、口紅やパウダースティック等の油性成分を含有する固形状化粧料（以下、「油性固形化粧料」と記す）の場合、油性成分を含むために従来の弾性成形型では繰返し使用している間に弾性成形型が油性成分により膨張してしまい、成形型の型崩れを起こすという問題があった。特に、口紅のように油性成分を多く含む油性固形化粧料の場合は弾性成形型の膨張が著しく、より型崩れを起こし易いばかりでなく、口紅にとって重要な品質である表面のツヤが充分に得られないという欠点があった。
【０００５】
より具体的には、従来用いられていた天然ゴム、クロロプレンゴム、シリコンゴムなどの材質の弾性成形型は耐油性が低いため、口紅の成形で繰返し使用している間に口紅中の油性成分を吸収して徐々に膨張し、型崩れを起こす。そして、この膨張により弾性成形型の内表面が租面となり、それが原因で成形された成形品の表面ツヤが失われるといった問題が起きる。
【０００６】
また、最近では耐油性に優れた弾性成形型として、ポリテトラフルオロエチレン等のフッ素ゴムが使われるようになっているが、フッ素ゴムよりなる弾性成形型は硬度が高く、柔軟性がないために、成形品を成形型から剥がしづらく、表面ツヤを損なうという問題があった。
【０００７】
【発明が解決しようとする課題】
本発明は、このような現状においてなされたもので、ツヤのある油性固形化粧料等の成形品を成形することができ、しかも、繰返し使用しても型崩れしない耐油性、耐久性を有し、かつ柔軟性も優れた弾性成形型を提供することをその課題とする。
【０００８】
【課題を解決するための手段】
本発明者らは、鋭意研究した結果、特定のフッ素化ポリエーテル骨格をもつフッ素エラストマーを含有する樹脂によりつくられた弾性成形型を用いれば、上記目的を達成できることを見いだし、これらの知見に基づいて本発明を完成するに至った。
【０００９】
すなわち本発明は、次の（Ａ）および（Ｂ）、
（Ａ）一般式（１）で示される含フッ素アミド化合物
【化７】

［式中、Ｒ¹およびＲ²は一価炭化水素基、Ｑは次の式（２）または（３）、
【化８】

（ここで、Ｒ³は結合途中に酸素原子、窒素原子またはケイ素原子の１種または２種以上を介在させても良い二価炭化水素基を意味する）
または
【化９】

（ここで、Ｒ⁴、Ｒ⁵は二価炭化水素基を意味する）
を示し、Ｒfは二価のパーフルオロアルキレン基などを示し、ａは０以上の整数を意味する］
（Ｂ）一分子中に一個以上の一価パーフルオロオキシアルキル基、一価のパーフルオロアルキル基、二価のパーフルオロオキシアルキレン基又は二価のパーフルオロアルキレン基を有し、且つ二個以上のヒドロシリル基を有する含フッ素オルガノ水素シロキサン
を重合して得られるフッ素系エラストマーを含有する樹脂により形成される弾性成形型、およびそれを用いた油性固形化粧料の成形方法である。
【００１０】
【発明の実施の形態】
以下、本発明について詳しく説明する。
【００１１】
本発明の弾性成形型の材料となるフッ素エラストマーは、（Ａ）上記一般式（１）で示される含フッ素アミド化合物と、（Ｂ）一分子中に一個以上の一価パーフルオロオキシアルキル基、一価のパーフルオロアルキル基、二価のパーフルオロオキシアルキレン基又は二価のパーフルオロアルキレン基を有し、且つ二個以上のヒドロシリル基を有する含フッ素オルガノ水素シロキサンとを重合することにより得られる弾性樹脂体である。
【００１２】
この弾性樹脂体は、好ましくは、例えば上記の（Ａ）と（Ｂ）を、（Ｂ）の量を該組成物中の脂肪族不飽和基１モルに対し、ヒドロシリル（Ｓｉ−Ｈ）基が０.５〜５モルの量となるように混合したものを重合させて硬化させる（以下、硬化と略記する）ことにより好適に得ることができる。硬化方法としては、例えば上記（Ａ）、（Ｂ）の混合物に触媒量の白金族化合物を添加した後、加熱する等の方法を利用することができる。
【００１３】
本発明で用いるフッ素系エラストマーの調製に用いる成分（Ａ）および成分（Ｂ）の詳細や、その硬化方法等の詳細は特開平８−１９９０７０号に記載されているので、本発明で使用するフッ素系エラストマーはこの公報の記載を参考にすれば容易に調製できる。また、このフッ素系エラストマーは、ＳＩＦＥＬ３５００、ＳＩＦＥＬ３５１０、Ｘ−７０−７０９、Ｘ−７０−７０７ＢＫ、Ｘ−７１−３０５等の商品名（信越化学工業社製）で市販されているので、これを使用することもできる。
【００１４】
本発明の弾性成形型は、上記フッ素系エラストマーだけで形成することもできるが、一般的に弾性成形型の材料として用いられている天然ゴム、クロロプレンゴム、シリコンゴムなどを混合、ブレンドして形成してもよい。後者の場合の配合割合は、（フッ素系シリコーンエラストマー）／（一般ゴム）＝１０／９０〜９９／１が好ましい。フッ素系シリコーンエラストマーの配合量が１０重量％（以下％と略記）以下になると耐油性、柔軟性が劣り、本発明の効果が損なわれる。
【００１５】
ブレンドする場合の好ましい例としては、１０％〜９０％の本発明のフッ素系エラストマー（例えばＸ−７０−７０９；信越化学工業社製）と９０〜１０％のシリコンエラストマー（型取り用ＲＴＢゴムＫＥ１３１０ＳＴ；（信越化学工業社製）とを混合、ブレンドして得た弾性成形型を挙げることができる。
【００１６】
なお、本発明の弾性成形型を形成するための成形方法は特に限定されず、射出成形や加圧成形等において、一般的に用いられている方法が利用できる。
【００１７】
上記のフッ素系エラストマーを含有する樹脂により形成される本発明の弾性成形型は、その硬度がＪＩＳＫ６３０１に規定のＡ型スプリング式硬さ試験機を使用した測定値（ＪＩＳ−Ａ）において、２０〜６０の範囲であるのが好ましく、特に、３０〜５０がより好ましい。硬度が２０より低いと、耐久性が劣り、型を繰返し何回か使用していくうちに劣化してしまう。また、空気圧差を利用して弾性成形型を拡張させ、成形品を型から剥がす方法を用いた場合は、硬度が６０より高いと弾性成形型が拡張しにくくなり、成形品の表面のツヤを損なう。
【００１８】
なお、硬度の測定については、上記ＪＩＳ規格測定以外にレオメーターを用いた方法で行っても良い。この場合、例えば、厚さ２.０ｍｍの口紅用弾性成形型の場合、歯形押し棒を用い、上昇速度６ｃｍ／ｍｉｎ、深さ３.０ｍｍで１５℃にて測定した時、１００〜３５０ｇの範囲が好ましく、特に１５０〜３００ｇの範囲が好ましい。
【００１９】
斯くして得られる本発明の弾性成形型は、柔軟性、耐油性、耐久性に優れており、繰返し、何回も使用する事ができるので、口紅、棒状固形粉末化粧料に代表される油性固形化粧料の成形に適している。特に流動物である原料を硬化させて製造された成形型であるため、微細な凸凹模様や表面ツヤを損なうことなく、油性固形化粧料を成形することができる。
【００２０】
本発明の弾性成形型は透明、不透明は問わないが、特に口紅などの彩色を有する成形品を製造するための弾性成形型においては透明〜半透明が好ましい。口紅の溶融物（口紅バルク）など有色の流動性成形材料を充填したときに充填状態を目視観察できるとともに、成形品を弾性成形型から剥がしたあとに成形型内に付着した口紅バルク等の残存状態を確認しやすい。また、不透明である場合には、白色が好ましい。充填状態の目視観察は不可能であるが、白色であれば成形品を弾性成形型から剥がしたあとの該成形型内の口紅バルク等の付着状態を確認しやすい。
【００２１】
本発明成形型を用いて成型品を製造方法するには、常法に従い、弾性成形型に成型品の材料となる流動性の成形材料を充填し、これを冷却、固化後、弾性成形型から取り出せばよい。この場合、その成形品の特性に応じて、弾性成形型に保持具を付けることができる。例えば、口紅の場合、弾性成形型の成形材料注入口側に容器や中皿を付けると、口紅を傷つけることなく、弾性成形型より取出しやすくなる。
【００２２】
上記方法で、成形材料の冷却、固化や得られた成型品の取り出しも、公知方法に従って行うことができ、例えば取り出しは、適当な手段で弾性成形型中に空気を吹き込み、これを膨張させる方法や、弾性成形型に何らかの手段で力を加え、変形させる方法を利用することができる。
【００２３】
【実施例】
以下、実施例を示し本発明を更に詳細に説明するが、本発明はこれら実施例等に何ら制約されるものではない。
【００２４】
実施例１
以下に示す材料を用い、下記の加圧成形法にて弾性成形型を形成し、そのオイル膨張性、硬度、成形型の色調を評価、判定した。また、形成された弾性成形型に容器を装着し、これに加熱溶解した口紅バルクを充填した後、冷却し、空気圧差（真空）を利用して弾性成形型を外側へ拡張させる方法で型を外して口紅を成形した。得られた口紅についてその表面ツヤを観察し、各成形型の判定を行った。これらの評価、判定結果は後記表１に示す。
【００２５】
［弾性成形型材料］
本発明品１：
フッ素系エラストマー（Ｘ−７０−７０９；信越化学工業社製）
本発明品２：
フッ素系エラストマー（Ｘ−７１−３０５；信越化学工業社製）
比較品１：
シリコンゴム（型取り用ＲＴＢゴムＫＥ１３１０ＳＴ；信越化学工業社製）
比較品２：
フッ素ゴム（ダイエル；ダイキン社製）
比較品３：
フッ素ゴム（アフラス；旭硝子社製）
【００２６】
［弾性成形型の加圧成形方法］
凹型と凸型を合わせたとき、隙間が弾性成形型と同じ形状となる凹型と凸型を用意する。上記凹型に上記材料を流し込んだ後、上から上記凸型を加圧し押し込む。その後２００℃に加熱し、２０分後に凸型をはずして凹型より弾性成形型を取り出す。
【００２７】
［弾性成形型の評価、判定］
（ア）オイル膨張性
各々の弾性成形型を流動パラフィンに常温で３時間浸漬した後の外形変化寸法率を求め、変化の無かったものから著しい変化が見られたものまでを評価し、下記の５段階で判定した。寸法変化の無いものはオイル膨張が無く好ましいが、寸法変化のあるものはオイル膨張してしまい、好ましくない。
【００２８】

【００２９】
（イ）硬度
レオメーターＮＲＭ−２００２Ｄ−Ｄ（不動工業社製）を用い、測定温度１５℃、上昇速度６ｃｍ／ｍｉｎ、深さ３.０ｍｍ、歯形押し棒使用の条件にて弾性成形型の硬度を測定し、好ましい硬度ものから不適な硬度のものまでを下記５段階で判定した。
【００３０】

【００３１】
（ハ）色調
弾性成形型の外観色を観察し、透明なものから着色不透明なものまで下の３段階で判定した。
【００３２】

【００３３】
［口紅の外観評価、判定］
上記の各弾性成形型を用いて成形した口紅の外観を専門評価者が評価し、表面ツヤがあるものから、弾性成形型に口紅が一部付着してしまったためにハガレが見られるものまで下記の５段階で判定した。
【００３４】

【００３５】
［結果］
【表１】

【００３６】
表１の結果より、本発明の弾性成形型はオイル膨張性、硬度、色調において優れたものであった。また、本発明の弾性成形型を用いて充填した口紅は非常にツヤがあった。以上より、本発明の弾性成形型は口紅の成形型として極めて良好な品質を有するものであることが実証された。
【００３７】
実施例２
フッ素ポリエーテル骨格からなるフッ素系シリコンエラストマー（Ｘ−７０−７０９（信越化学工業社製））とシリコンゴム（型取り用ＲＴＢゴムＫＥ１３１０ＳＴ（信越化学工業社製））とを表２の配合割合にて混合して弾性成形型を形成した。この弾性成形型に口紅バルクを充填後、成形し、得られた成形品の外観を実施例１と同様に評価、判定した。この結果を表２に併記する
【００３８】
【表２】

【００３９】
表２の結果より、ブレンド型である本発明の弾性成形型もツヤのある口紅が得られ、口紅用の成形型として優れた品質を有するものであることが明らかになった。
【００４０】
【発明の効果】
本発明の弾性成形型は、素材樹脂中のフッ素系成分による耐油性とシリコン系成分による柔軟性を併せ持つものであり、繰返し使用しても型崩れしない良好な耐油性や耐久性を有する。そして、本発明の弾性成形型は柔軟性が高く、自由な形状とすることができるので、これを用いれば、化粧品や石鹸をはじめ、チョコレート等の食品やローソク等の成形において従来にない形状で、外観美麗な製品を得ることができる。とりわけ、口紅などの油性成分を多く含む油性固形化粧料等に対しては、ツヤのある製品を長時間繰返して成形することができるので、特に適している。
以上[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic mold, and more particularly to an elastic mold made of a resin containing a fluorine-based elastomer having a specific fluorinated polyether skeleton and a method for producing a molded article using the same.
[0002]
[Prior art]
There is a method in which various molded products are molded by using a mold made of an elastic material such as natural rubber, chloroprene rubber, or silicon rubber, that is, an elastic mold instead of a metal mold that has been widely used conventionally. Are known. In this molding method, a fluid molding material is filled into the molding from the opening of the elastic molding die, and then the molding material is solidified by heating or cooling, and the solidified molded product is converted into an elastic molding die. It is a method of taking out more. In this elastic molding method, the elastic mold is expanded by utilizing a difference in air pressure, etc., and the molded product is peeled off from the mold and taken out by being discharged from the expanded opening. Used repeatedly expanding and contracting many times.
[0003]
In this elastic molding method, the manufacturing cost of the mold is low, and since there is no consideration of the reverse taper and the release gradient for mold release, it is possible to obtain molded products of various desired designs, In addition, it has been used for molding chocolate, cheese, jelly, kamaboko, etc., and has recently been used for solid cosmetics, as it does not impair the appearance of the surface as if it was molded with a split mold. Has been.
[0004]
However, in the case of solid cosmetics containing oily components such as lipsticks and powder sticks (hereinafter referred to as “oily solid cosmetics”), they are repeatedly used in conventional elastic molds because they contain oily components. However, there is a problem that the elastic mold is expanded by the oil component and the mold is deformed. In particular, in the case of oily solid cosmetics containing a large amount of oily components such as lipsticks, the expansion of the elastic mold is remarkably easy to cause loss of shape, and sufficient surface gloss, which is an important quality for lipsticks, is obtained. There was a disadvantage that it was not possible.
[0005]
More specifically, the elastic molds made of natural rubber, chloroprene rubber, silicon rubber, etc., which have been used in the past, have low oil resistance, so that the oily component in the lipstick can be removed during repeated use in lipstick molding. Absorbs and gradually expands, causing loss of shape. This expansion causes the inner surface of the elastic mold to become a rough surface, which causes a problem that the surface gloss of the molded product is lost.
[0006]
Recently, fluoro rubbers such as polytetrafluoroethylene have been used as elastic molds with excellent oil resistance, but elastic molds made of fluoro rubber have high hardness and are not flexible. There is a problem that it is difficult to remove the molded product from the mold and the surface gloss is damaged.
[0007]
[Problems to be solved by the invention]
The present invention has been made under such circumstances, and can form molded products such as glossy oily solid cosmetics, and has oil resistance and durability that does not lose its shape even when used repeatedly. An object of the present invention is to provide an elastic mold having excellent flexibility.
[0008]
[Means for Solving the Problems]
As a result of intensive studies, the present inventors have found that the above object can be achieved by using an elastic mold made of a resin containing a fluorine elastomer having a specific fluorinated polyether skeleton, and based on these findings. The present invention has been completed.
[0009]
That is, the present invention provides the following (A) and (B),
(A) Fluorine-containing amide compound represented by the general formula (1)

[Wherein R ¹ and R ² are monovalent hydrocarbon groups, Q is the following formula (2) or (3),
[Chemical 8]

(Here, R ³ means a divalent hydrocarbon group in which one or more of an oxygen atom, a nitrogen atom or a silicon atom may be interposed in the middle of bonding)
Or [Chemical 9]

(Where R ⁴ and R ⁵ are divalent hydrocarbon groups)
Rf represents a divalent perfluoroalkylene group or the like, and a represents an integer of 0 or more.
(B) one or more monovalent perfluorooxyalkyl groups, monovalent perfluoroalkyl groups, divalent perfluorooxyalkylene groups or divalent perfluoroalkylene groups in one molecule, and two or more An elastic mold formed of a resin containing a fluorine-based elastomer obtained by polymerizing a fluorine-containing organohydrogensiloxane having a hydrosilyl group, and a method for molding an oily solid cosmetic using the same.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below.
[0011]
The fluorine elastomer used as the material of the elastic mold of the present invention includes (A) a fluorine-containing amide compound represented by the above general formula (1), (B) one or more monovalent perfluorooxyalkyl groups in one molecule, It is obtained by polymerizing with a fluorine-containing organohydrogensiloxane having a monovalent perfluoroalkyl group, a divalent perfluorooxyalkylene group or a divalent perfluoroalkylene group and having two or more hydrosilyl groups. It is an elastic resin body.
[0012]
This elastic resin body preferably has, for example, the above-mentioned (A) and (B), wherein the amount of (B) is hydrosilyl (Si—H) group per 1 mol of aliphatic unsaturated group in the composition. It can be suitably obtained by polymerizing and curing (hereinafter abbreviated as “curing”) what is mixed in an amount of 0.5 to 5 mol. As a curing method, for example, a method of heating after adding a catalytic amount of a platinum group compound to the mixture of (A) and (B) can be used.
[0013]
Details of the component (A) and component (B) used for the preparation of the fluorine-based elastomer used in the present invention and the details of the curing method thereof are described in JP-A-8-199070. The system elastomer can be easily prepared by referring to the description in this publication. Moreover, since this fluorine-type elastomer is marketed with brand names (made by Shin-Etsu Chemical Co., Ltd.), such as SIFEL3500, SIFEL3510, X-70-709, X-70-707BK, X-71-305, this is used. You can also
[0014]
The elastic mold of the present invention can be formed only with the above-mentioned fluorine-based elastomer, but is formed by mixing and blending natural rubber, chloroprene rubber, silicon rubber, etc., which are generally used as elastic mold materials. May be. The blending ratio in the latter case is preferably (fluorinated silicone elastomer) / (general rubber) = 10/90 to 99/1. When the blending amount of the fluorine-based silicone elastomer is 10% by weight (hereinafter abbreviated as “%”) or less, the oil resistance and flexibility are inferior, and the effects of the present invention are impaired.
[0015]
As a preferable example in the case of blending, 10% to 90% of the fluorine-based elastomer of the present invention (for example, X-70-709; manufactured by Shin-Etsu Chemical Co., Ltd.) and 90 to 10% of silicone elastomer (RTB rubber KE1310ST for molding) An elastic mold obtained by mixing and blending (made by Shin-Etsu Chemical Co., Ltd.).
[0016]
In addition, the shaping | molding method for forming the elastic shaping | molding die of this invention is not specifically limited, The method generally used in injection molding, pressure molding, etc. can be utilized.
[0017]
The elastic mold of the present invention formed of a resin containing the above-mentioned fluorine-based elastomer has a hardness of 20 (JIS-A) measured using an A-type spring type hardness tester defined in JIS K6301. It is preferable that it is in the range of -60, and more preferably 30-50. When the hardness is lower than 20, the durability is inferior, and the mold deteriorates as the mold is used several times. In addition, when the elastic mold is expanded using the air pressure difference and the molded product is peeled off from the mold, if the hardness is higher than 60, the elastic mold is difficult to expand, and the surface of the molded product is not glossy. To lose.
[0018]
In addition, about the measurement of hardness, you may perform by the method using a rheometer other than the said JIS specification measurement. In this case, for example, in the case of an elastic mold for lipstick having a thickness of 2.0 mm, when measured at 15 ° C. at a rising speed of 6 cm / min and a depth of 3.0 mm using a tooth-shaped push rod, a range of 100 to 350 g Is preferable, and the range of 150 to 300 g is particularly preferable.
[0019]
The elastic mold of the present invention thus obtained is excellent in flexibility, oil resistance and durability, and can be used repeatedly and repeatedly, so that it is oily as represented by lipsticks and stick-shaped solid powder cosmetics. Suitable for molding solid cosmetics. In particular, since it is a mold produced by curing a raw material that is a fluid, an oily solid cosmetic can be molded without impairing fine irregularities and surface gloss.
[0020]
The elastic mold of the present invention may be transparent or opaque, but is preferably transparent to translucent in an elastic mold for producing a molded product having a color such as lipstick. When filled with colored fluid molding materials such as lipstick melt (lipstick bulk), the filling state can be visually observed, and the lipstick bulk, etc. remaining in the mold after the molded product is peeled off from the elastic mold Easy to check status. Moreover, when opaque, white is preferable. Although the visual observation of the filling state is impossible, if it is white, it is easy to confirm the adhesion state of the lipstick bulk and the like in the mold after the molded product is peeled off from the elastic mold.
[0021]
In order to produce a molded product using the mold according to the present invention, according to a conventional method, an elastic mold is filled with a flowable molding material as a material of the molded product, and after cooling and solidifying, an elastic mold is used. Just take it out. In this case, a holding tool can be attached to the elastic mold according to the characteristics of the molded product. For example, in the case of lipstick, if a container or an inner dish is attached to the molding material injection port side of the elastic mold, it becomes easier to take out from the elastic mold without damaging the lipstick.
[0022]
By the above method, the molding material can be cooled and solidified, and the resulting molded product can be taken out in accordance with a known method. For example, taking out is a method of blowing air into an elastic mold by an appropriate means and expanding it. Alternatively, a method of applying a force to the elastic mold by some means to deform it can be used.
[0023]
【Example】
EXAMPLES Hereinafter, although an Example is shown and this invention is demonstrated still in detail, this invention is not restrict | limited at all by these Examples.
[0024]
Example 1
Using the materials shown below, an elastic mold was formed by the following pressure molding method, and its oil expandability, hardness, and color tone of the mold were evaluated and judged. In addition, the container is attached to the formed elastic mold, filled with lipstick bulk that has been heated and melted, and then cooled, and the mold is expanded by a method of expanding the elastic mold outward using the air pressure difference (vacuum). Removed and molded lipstick. The surface gloss of the obtained lipstick was observed, and each mold was judged. These evaluation and determination results are shown in Table 1 below.
[0025]
[Elastic mold material]
Invention product 1:
Fluorine-based elastomer (X-70-709; manufactured by Shin-Etsu Chemical Co., Ltd.)
Invention product 2:
Fluorine-based elastomer (X-71-305; manufactured by Shin-Etsu Chemical Co., Ltd.)
Comparative product 1:
Silicone rubber (RTB rubber KE1310ST for mold making; manufactured by Shin-Etsu Chemical Co., Ltd.)
Comparative product 2:
Fluoro rubber (Daiel; manufactured by Daikin)
Comparison product 3:
Fluoro rubber (Aphras; manufactured by Asahi Glass)
[0026]
[Pressure molding method of elastic mold]
When the concave mold and the convex mold are combined, a concave mold and a convex mold are prepared in which the gap is the same shape as the elastic mold. After pouring the material into the concave mold, the convex mold is pressurized and pushed in from above. Thereafter, it is heated to 200 ° C., and after 20 minutes, the convex mold is removed and the elastic mold is taken out from the concave mold.
[0027]
[Evaluation and judgment of elastic molds]
(A) Oil expandability The outer shape change dimensional ratio after each elastic mold was immersed in liquid paraffin at room temperature for 3 hours was evaluated, and from the one without change to the one with significant change, the following was evaluated. Judged in 5 stages. Those having no dimensional change are preferable because there is no oil expansion, but those having a dimensional change are not preferable because the oil expands.
[0028]

[0029]
(A) Using a hardness rheometer NRM-2002D-D (manufactured by Fudo Kogyo Co., Ltd.), measuring the temperature of 15 ° C., the rising speed of 6 cm / min, the depth of 3.0 mm, using the tooth shape push rod, The hardness was measured, and from the preferable hardness to the inappropriate hardness was determined in the following five stages.
[0030]

[0031]
(C) Color The appearance color of the elastoelastic mold was observed and judged from the following three levels from transparent to colored and opaque.
[0032]

[0033]
[Appearance evaluation and judgment of lipstick]
The expert evaluator evaluated the appearance of the lipstick molded using each of the above elastic molds, and from the one with a surface gloss to the one where the lipstick was partially attached to the elastic mold and was seen below It was judged in 5 stages.
[0034]

[0035]
[Result]
[Table 1]

[0036]
From the results shown in Table 1, the elastic mold of the present invention was excellent in oil expansibility, hardness and color tone. Moreover, the lipstick filled with the elastic mold of the present invention was very glossy. From the above, it has been demonstrated that the elastic mold of the present invention has extremely good quality as a lipstick mold.
[0037]
Example 2
Fluorine-based silicon elastomer (X-70-709 (manufactured by Shin-Etsu Chemical Co., Ltd.)) and silicon rubber (RTB rubber KE1310ST (manufactured by Shin-Etsu Chemical Co., Ltd.) for mold making) composed of a fluoropolyether skeleton in the blending ratios in Table 2 And mixed to form an elastic mold. The elastic mold was filled with lipstick bulk and then molded, and the appearance of the resulting molded product was evaluated and determined in the same manner as in Example 1. The results are also shown in Table 2. [0038]
[Table 2]

[0039]
From the results shown in Table 2, it was revealed that the glossy lipstick was also obtained from the elastic mold according to the present invention, which was a blend mold, and had excellent quality as a mold for lipstick.
[0040]
【The invention's effect】
The elastic mold of the present invention has both oil resistance due to the fluorine-based component in the material resin and flexibility due to the silicon-based component, and has good oil resistance and durability that does not collapse even when used repeatedly. And since the elastic mold of the present invention is highly flexible and can be made into a free shape, if it is used, it can be used in shapes such as cosmetics and soap, chocolate and other foods, candles, etc. , You can get a beautiful product. In particular, it is particularly suitable for oily solid cosmetics containing a large amount of oily components such as lipstick, since glossy products can be repeatedly molded for a long time.
more than

Claims

The following (A) and (B),
(A) Fluorine-containing amide compound represented by general formula (1)

[Wherein R ¹ and R ² are monovalent hydrocarbon groups, Q is the following formula (2) or (3),

(Here, R ³ means a divalent hydrocarbon group that may contain one or more oxygen atom, nitrogen atom, or silicon atom in the middle of bonding)
Or

(Where R ⁴ and R ⁵ are divalent hydrocarbon groups)
Rf represents a divalent perfluoroalkylene group or the like, and a represents an integer of 0 or more.
(B) one or more monovalent perfluorooxyalkyl groups, monovalent perfluoroalkyl groups, divalent perfluorooxyalkylene groups or divalent perfluoroalkylene groups in one molecule, and two An elastic mold for molding an oily solid cosmetic, which is formed from a resin containing a fluorine-based elastomer obtained by polymerizing the fluorine-containing organohydrogensiloxane having the above hydrosilyl group.

(Here, R ³ represents a divalent hydrocarbon group in which one or more of an oxygen atom, a nitrogen atom or a silicon atom may be interposed in the middle of bonding)
Or

(Where R ⁴ and R ⁵ are divalent hydrocarbon groups)
Rf represents a divalent perfluoroalkylene group or the like, and a represents an integer of 0 or more.
(B) one or more monovalent perfluorooxyalkyl groups, monovalent perfluoroalkyl groups, divalent perfluorooxyalkylene groups or divalent perfluoroalkylene groups in one molecule, and two A composition containing the above-mentioned fluorine-containing organohydrogensiloxane having a hydrosilyl group, wherein the amount of (B) is hydrosilyl (Si-H) group relative to 1 mol of the aliphatic unsaturated group in the composition. An elastic molding die for molding an oily solid cosmetic formed by a resin containing a fluorine-based elastomer obtained by curing a composition having an amount of 0.5 to 5 mol.

The elastic mold according to claim 1 or 2, wherein the hardness (JIS-A) after being formed is in the range of 20-60.

A method for producing an oily solid cosmetic comprising filling an elastic mold according to any one of claims 1 to 3 with a flowable molding material, cooling and solidifying the elastic mold, and then removing the elastic mold from the elastic mold. .

The method for producing an oily solid cosmetic according to claim 4, wherein the flowable molding material is lipstick bulk and the oily solid cosmetic is lipstick.