摘要:
Provided is an adhesive composition which can form a cured product that is high in shear adhesion strength, peel adhesion strength and impact adhesion strength and particularly is excellent in cold/hot cycle resistance of adhesion strength. The adhesive composition comprises (a) a 2-cyanoacrylic acid ester, (b) a high molecular-weight component compatible with 2-cyanoacrylic acid ester, (c) a multifunctional 2-cyano-3-vinylacrylic acid ester, and (d) an onium salt represented by the following general formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒC + A - €ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein, C + represents an onium cation and A - represents an anion which does not substantially initiate polymerization of the 2-cyanoacrylic acid ester, and the components (a)-(d) are contained in predetermined amounts.
摘要:
Provided are a curable composition which can easily reinforce shaped objects and can provide shaped objects with good color developability and excellent texture, and a method for reinforcing shaped objects using the same. The curable composition comprises a 2-cyanoacrylic acid ester and a surface conditioner, the content of the surface conditioner being 0.001-10 parts by mass relative to 100 parts by mass of the 2-cyanoacrylic acid ester, and the surface tension of the composition being 28 mN/m or less at 25°C. Preferred surface conditioners are silicone-based and fluorinated surface conditioners.
摘要:
Provided are a synthetic peptide that induces the reprogramming of a differentiated cell, a reprogramming-inducing pharmaceutical composition that contains this synthetic peptide, and a method for producing an undifferentiated cell from a differentiated cell using this synthetic peptide. The peptide provided by the present invention is a synthetic peptide having a reprogramming-inducing peptide sequence formed of the amino acid sequence given by SEQ ID NO: 1 or a modified amino acid sequence thereof. The method for producing an undifferentiated cell provided by the present invention includes inducing the reprogramming of a target cell by culturing a cell culture which contains the target cell and to which the synthetic peptide has been supplied.
摘要:
Provided is an adhesive composition which exhibits excellent water resistance and warm-water resistance without impairing instantaneous adhesiveness. The 2-cyanoacrylate adhesive composition contains a 2-cyanoacrylic acid ester, and a specific phthalic anhydride derivative, in which the content of the phthalic anhydride derivative is from 0.01 to 5% by mass, relative to the total amount of the adhesive composition. Preferably, the adhesive composition further contains an elastomer.
摘要:
Provided is a curable resin composition which exhibits excellent curability and is good in storage stability. The curable resin composition comprises (a) a polymer having a hydrolyzable silyl group, (b) an acid catalyst, and (c) an onium salt represented by the following general formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒC + A - –ª–ª–ª€ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein C + is an onium cation, and A - is a hydrogen sulfate anion, a hydrogen sulfite anion, a sulfonate anion represented by R 1 SO 3 - wherein R 1 represents an alkyl group, perfluoroalkyl group, cycloalkyl group, vinyl group, aryl group, perfluoroaryl group, aralkyl group or halogen atom; or a bis(substituted sulfonyl)imide anion represented by (R 2 SO 2 ) 2 N - wherein R 2 represents an alkyl group, perfluoroalkyl group, or aryl group; tetrafluoroborate anion, or hexafluorophosphate anion.
摘要翻译:本发明提供固化性优异,保存稳定性良好的固化性树脂组合物。 固化性树脂组合物含有(a)具有水解性甲硅烷基的聚合物,(b)酸催化剂,和(c)下述通式(1)所示的鎓盐。[化学式1] 其中C +是鎓阳离子,A - 是硫酸氢根阴离子,亚硫酸氢根阴离子, 由R 1 SO 3 - 表示的磺酸盐阴离子,其中R 1表示烷基,全氟烷基,环烷基,乙烯基,芳基,全氟芳基,芳烷基或卤素原子; 或由(R 2 SO 2)2 N - 表示的双(取代磺酰基)酰亚胺阴离子,其中R 2表示烷基,全氟烷基或芳基; 四氟硼酸根阴离子或六氟磷酸根阴离子。
摘要:
[Problem] The purpose of the present invention is to obtain a multifunctional (meth)acrylate with good yield by an ester exchange reaction of a polyhydric alcohol such as pentaerythritol or dipentaerythritol with a monofunctional (meth)acrylate. [Solution] A multifunctional (meth)acrylate manufacturing method characterized in that when manufacturing a multifunctional (meth)acrylate by an ester exchange reaction of a polyhydric alcohol with a monofunctional (meth) acrylate, catalyst (A) and catalyst (B) are used together. Catalyst (A) : One or more kinds of compounds selected from a group consisting of cyclic tertiary amines with an azabicyclo structure or salts or complexes thereof, amidines or salts or complexes thereof, and compounds with a pyridine ring or salts or complexes thereof. Catalyst (B): One or more kinds of compounds selected from a group consisting of zinc-containing compounds.