(METH)ACRYLIC POLYMER PARTICLE, METHOD FOR PRODUCING THE SAME, PLASTISOL COMPOSITION MADE FROM THE POLYMER PARTICLE, AND ARTICLE MADE FROM THE PLASTISOL COMPOSITION
Disclosed are an industrially useful (meth)acrylic polymer particle for use in a plastisol which is excellent in storage stability, particularly under circumstance at 40° C. or above, so that it can suppress gelation and maintain a sol state during storage and which can give a shaped article excelle...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | Disclosed are an industrially useful (meth)acrylic polymer particle for use in a plastisol which is excellent in storage stability, particularly under circumstance at 40° C. or above, so that it can suppress gelation and maintain a sol state during storage and which can give a shaped article excellent in flexibility and chipping resistance; a method for producing the (meth)acrylic polymer particle; and a plastisol composition made from the (meth)acrylic polymer particle. Specifically disclosed is a method for producing a (meth)acrylic polymer particle, which comprises polymerizing a monomer or monomer mixture (B) to form a polymer (b) in the presence of a polymer (a) obtained by polymerization of a monomer or monomer mixture (A), wherein a glass transition temperature (Tg) of the polymer (a) as calculated from the FOX equation is 90° C. or above, a solubility parameter of the polymer (a) is 19.90 (J/cm3)1/2 or below, and a solubility parameter of the polymer (b) is 20.22 (J/cm3)1/2 or above. |
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