A scaffolding material for culturing a stem cell, which contains a synthetic resin, and has a nitrogen content of the synthetic resin of 0.1% by mass or more and 10% by mass or less. According to the scaffolding material for stem cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of stem cells after seeding, and highly efficient cell proliferation.

A scaffolding material for culturing a stem cell, which contains a synthetic resin, and has a nitrogen content of the synthetic resin of 0.1% by mass or more and 10% by mass or less. According to the scaffolding material for stem cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of stem cells after seeding, and highly efficient cell proliferation.

Anhydrosugar-based monomers prepared from isosorbide, isomannide, and isoidide and resin systems containing these anhydrosugar-based monomers that are partially to fully bio-based, which may produce materials having properties that meet or exceed the properties of similar petroleum derived vinyl ester resins.

Anhydrosugar-based monomers prepared from isosorbide, isomannide, and isoidide and resin systems containing these anhydrosugar-based monomers that are partially to fully bio-based, which may produce materials having properties that meet or exceed the properties of similar petroleum derived vinyl ester resins.

A composition in which a fluorine-containing monomer is stabilized, a method for stabilizing a fluorine-containing monomer, and the like are provided. The composition includes a fluorine-containing monomer (M) and a polycyclic aromatic compound (B). The fluorine-containing monomer (M) includes at least one monomer selected from a compound represented by formula (M1), a compound represented by formula (M2), and a compound represented by formula (M3). The polycyclic aromatic compound (B) includes a compound represented by formula (B1).

##STR00001##

R.sup.1-R.sup.10 each independently represent a fluorine atom, a perfluoroalkyl group, or a perfluoroalkoxy group, and R.sup.11-R.sup.18 each independently represent a hydrogen atom or an alkyl group, however, excluding an embodiment in which R.sup.17 represents a tert-butyl group, with R.sup.11-R.sup.16 and R.sup.18 being a hydrogen atom.

A composition in which a fluorine-containing monomer is stabilized, a method for stabilizing a fluorine-containing monomer, and the like are provided. The composition includes a fluorine-containing monomer (M) and a polycyclic aromatic compound (B). The fluorine-containing monomer (M) includes at least one monomer selected from a compound represented by formula (M1), a compound represented by formula (M2), and a compound represented by formula (M3). The polycyclic aromatic compound (B) includes a compound represented by formula (B1).

##STR00001##

R.sup.1-R.sup.10 each independently represent a fluorine atom, a perfluoroalkyl group, or a perfluoroalkoxy group, and R.sup.11-R.sup.18 each independently represent a hydrogen atom or an alkyl group, however, excluding an embodiment in which R.sup.17 represents a tert-butyl group, with R.sup.11-R.sup.16 and R.sup.18 being a hydrogen atom.

The present invention relates to a lubricant composition comprising at least one polyalkyl(meth)acrylate including repeating units derived from (meth)acrylates having 6 to 22 carbon atoms in the alcohol radical, wherein the polyalkyl(meth)acrylate includes repeating units derived from ethylenically unsaturated monomers having at least one covalently bonded phosphorus atom. The present invention further relates to a polyalkyl(meth)acrylate suitable for such a lubricant composition and to the use of a polyalkyl(meth)acrylate having repeating units derived from ethylenically unsaturated monomers having at least one covalently bonded phosphorus atom for reducing friction.

A scaffolding material for stem cell culture, which has a dispersion component .sup.d of the surface free energy of 24.5 or more and less than 45.0, and a dipole component .sup.p of the surface free energy of 1 or more and less than 20.0. According to the scaffolding material for stem cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of stem cells after seeding, and highly efficient cell proliferation.

A scaffolding material for stem cell culture, which has a dispersion component .sup.d of the surface free energy of 24.5 or more and less than 45.0, and a dipole component .sup.p of the surface free energy of 1 or more and less than 20.0. According to the scaffolding material for stem cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of stem cells after seeding, and highly efficient cell proliferation.

Anhydrosugar-based monomers prepared from isosorbide, isomannide, and isoidide and resin systems containing these anhydrosugar-based monomers that are partially to fully bio-based, which may produce materials having properties that meet or exceed the properties of similar petroleum derived vinyl ester resins.