A peelable paint composition for forming a peelable coating on a substrate is provided. The peelable paint composition includes water, a polysiloxane resin, and a film-forming resin that includes a component selected from the group consisting of styrene-butadiene copolymer, polyvinyl butyral, and combinations thereof.

A peelable paint composition for forming a peelable coating on a substrate is provided. The peelable paint composition includes water, a polysiloxane resin, and a film-forming resin that includes a component selected from the group consisting of styrene-butadiene copolymer, polyvinyl butyral, and combinations thereof.

A peelable paint composition for forming a peclable coating on a substrate is provided. The peelable paint composition includes water, a polysiloxane resin, and a film-forming resin that includes a component selected from the group consisting of styrene-butadiene copolymer, polyvinyl butyral, and combinations thereof.

A peelable paint composition for forming a peclable coating on a substrate is provided. The peelable paint composition includes water, a polysiloxane resin, and a film-forming resin that includes a component selected from the group consisting of styrene-butadiene copolymer, polyvinyl butyral, and combinations thereof.

A scaffolding material for culturing a cell, the scaffolding material for culturing a cell containing a synthetic resin, and having 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 cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of cells after seeding, and highly efficient cell proliferation.

A scaffolding material for culturing a cell, the scaffolding material for culturing a cell containing a synthetic resin, and having 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 cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of cells after seeding, and highly efficient cell proliferation.

Free-flowing beads of hydrophobic polymers having high chemical and optical purity are provided. The hydrophobic polymers are homopolymers or copolymers of monomers having a water solubility of less than 0.01 g/100 g H.sub.2O. A method to prepare the hydrophobic polymer beads without use of surfactants or micelle forming agents is also provided.

A scaffolding material for culturing a cell, the scaffolding material for culturing a cell containing a synthetic resin, and having 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 cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of cells after seeding, and highly efficient cell proliferation.

A scaffolding material for culturing a cell, the scaffolding material for culturing a cell containing a synthetic resin, and having 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 cell culture, the scaffolding material can have suitable hydrophilicity and strength, high fixation of cells after seeding, and highly efficient cell proliferation.