Patent ID: 11891544
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A pressure sensitive adhesive particle comprising:
a pressure sensitive adhesive base particle that contains a styrene resin containing styrene and a vinyl monomer other than styrene as polymerization components, and a (meth)acrylate resin containing at least two (meth)acrylates as polymerization components, wherein a mass ratio of the (meth)acrylates relative to a total of polymerization components of the (meth)acrylate resin is 90 mass % or more; and
an external additive,
wherein the pressure sensitive adhesive particle has a surface having an arithmetic average roughness Ra within a range of 0.005 μm to 0.100 μm,
the pressure sensitive adhesive particle has at least two glass transition temperatures, and a difference between the lowest glass transition temperature and the highest glass transition temperature among the glass transition temperatures of the pressure sensitive adhesive particle is 30° C. or more,
a weight-average molecular weight of the (meth)acrylate resin is more than 50,000 to 250,000 or less, and
two (meth)acrylates having a largest and a second-largest mass ratios among the at least two (meth)acrylates contained as the polymerization components in the (meth)acrylate resin are (meth)acrylic acid alkyl esters.