Patent ID: 9512310
Filing Date: 2016-12-06
CPC Classification: C08F,C08L

Claim Text:
1. A polyvinyl acetal resin composition containing a polyvinyl acetal resin and a resin having a crosslinked structure, the polyvinyl acetal resin composition having a structure in which the resin having a crosslinked structure is dispersed as a dispersed phase in the polyvinyl acetal resin as a continuous phase, the polyvinyl acetal resin composition having a maximum value of a loss tangent derived from the polyvinyl acetal resin at 40° C. or higher and a maximum value of a loss tangent derived from the resin having a crosslinked structure at 10° C. or lower in measurement of a dynamic viscoelasticity spectrum at a frequency of 10 Hz, and the polyvinyl acetal resin composition comprising a graft copolymer of the polyvinyl acetal resin and the resin having a crosslinked structure, wherein the graft copolymer has a grafting ratio of 2 to 150% by weight.