| CPC C08J 3/212 (2013.01) [C08J 3/12 (2013.01); C08J 2367/02 (2013.01)] | 22 Claims |
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1. Microparticles which:
a. are non-porous that is to mean that the microparticles have a porosity determined via mercury porosimetry according to ISO 15901-1:2005, of at most 10%; and
b. comprise a thermosetting polymeric network matrix which thermosetting polymeric network matrix comprises building groups selected from the group consisting of ester groups, ether groups, amide groups, urethane groups, and combinations thereof, and
c. have a random architecture, that is to mean that the microparticles have neither a core-shell architecture, nor a multi-layered architecture, nor an occluded architecture, nor a partially engulfed architecture, nor any combination thereof, and
d. have a particle size distribution with a median particle size by volume Dv50 as determined via laser diffraction according to the ISO 13320:2009, of at least 1 and at most 850 μm, and
e. do not have a melting temperature as determined via Differential Scanning calorimetry, and
f. have a glass transition temperature as determined via rheometry of at least 45 and at most 150° C., and
g. have a storage modulus G′ at 130° C. as determined via rheometry of at least 105 Pa·s and at most 109 Pa·s, and
h. have a rubbery plateau between 130 and 200° C. as determined via rheometry, and
i. have a sphericity S50 as determined according to the ISO 13322-2:2006 of at least 0.05 and at most 0.95, and
j. have an aspect ratio A50 as determined according to the ISO 13322-2:2006 of at least 0.05 and at most 0.95, and
k. have a convexity C50 as determined according to the ISO 13322-2:2006 of at least 0.05 and at most 0.95, and
l. Have a Brunauer-Emmett-Teller specific surface as determined according to the ISO 9277:2010, of at least 0.01 and at most 15 m2/g, and
m. have an aerobic char yield at 600° C., as determined via pyrolysis of at most 70% w/w on microparticles.
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