Processes for making polyolefin nanocomposites
AssigneeExxonMobil Research and Engineering Company
InventorsAndy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
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Abstract
A process for making a silica-polyolefin composite. The process has the steps of (a) reacting silica particles and an alkyl halosilane in the presence of a solvent and a catalyst to form silane-functionalized silica particles and (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin. There are other processes for making a silica-polyolefin composites. There are other processes for making metal phosphate-polyolefin composites.
Claims48
A process for making a silica-polyolefin composite, comprising:
- (a) reacting silica particles and an alkyl halosilane in the presence of a first solvent and a catalyst to form silane-functionalized silica particles and
- (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin in the presence of a second solvent.
A process for making a silica-polyolefin composite, coin rising:
- (a) reacting silica particles and a mercapto alkylalkoxysilane in the presence of a first solvent and a catalyst to form thiol-functionalized silica particles and
- (b) reacting the thiol-functionalized silica particles with a vinyl-terminated polyolefin in the presence of a second solvent.
A process for making a silica-polyolefin composite, comprising:
- (a) reacting silica particles and 1-(chlorosilyl)propyl 2-bromoisobutyrate in the presence of a first solvent and a base to form silylpropyl 2-bromoisobutyrate-functionalized silica particles;
- (b) polymerizing alkyl acrylate at the surfaces of the silylpropyl 2-bromoisobutyrate-functionalized particles in the presence of a second solvent to form polyacrylate-functionalized silica particles;
- (c) capping the polyacrylate-functionalized silica particles via reaction with acrylic acid in the presence of a third solvent;
- (d) reacting vinyl-terminated polyolefin with an alkylchlorosilane in the presence of a fourth solvent and a catalyst to form an alkylchlorosilane-functionalized polyolefin;
- (e) reacting the alkylchlorosilane-functionalized polyolefin and the polyacrylate-functionalized silica particles in the presence of a fifth solvent.
Dependencies are inferred from the claim text.