Isobutylene rubber particles, graft copolymer particles and resin composition containing the same
AssigneeKaneka Corporation
InventorsTaizo Aoyama, Katsuhiko Kimura
Life of this patent
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Abstract
Isobutylene rubber particles comprising a finely divided isobutylene polymer, and isobutylene-based graft copolymer particles comprising the isobutylene rubber particles and a vinyl monomer graft-polymerized onto the particles, which are useful as an impact modifier having excellent weatherability and thermal stability for thermoplastic resins and provide a thermoplastic resin composition having an improved impact resistance.
Claims18
An isobutylene rubber particle comprising an isobutylene polymer and a graftlinking agent selected from the group consisting of
- allyl methacrylate;
- β-methacryloyloxyethyldimethoxymethylsilane, γ-methacryloyloxypropylmethoxydimethylsilane, γ-methacryloyloxypropyldimethoxymethylsilane, γ-methacryloyloxypropyltrimethoxylane γ-methacryloyloxyproylethoxydimethylsilane, γ-methacryoyloxypropyldiethoxymethylsilane, γ-methacryoyloxypropyltriethoxysilane, δ-methacryloyloxybutyldiethoxymethylsilane, γ-acryloyloxypropyldimethoxymethylsilane, γ-acryloyloxypropyltrimethoxysilane, and other (meth)acrylic functional silane compounds;
- and
- γ-mercoptopropyltrimethoxysilane, γ-mercoptopropyldimethoxymethylsilane, and other mercapto functional silane compounds.
A resin composition comprising 1 to 99 parts by weight of at least one member selected from the group consisting of:
- (1) isobutylene rubber particles comprising an isobutylene polymer and a graftlinking agent selected from the group consisting of
- allyl methacrylate;
- β-methacryloyloxyethyldimntoxymethylsilane, γ-methacryloyloxypropylmethoxydimethylsilane, γ-methacryloyloxypropyldimethoxymethylsilane, γ-methacryloyloxypropyltrimethoxylane γ-methacryloyloxyproylethoxydimethylsilane, γ-methacryoyloxypropyldiethoxymethylsilane, γ-methacryoyloxypropyltriethoxysilane, δ-methacryloyloxybutyldiethoxymethylsilane, γ-acryloyloxypropyldimethoxymethylsilane, γ-acryloyloxypropyltrimethoxysilane, and other (meth)acrylic functional silane compounds;
- and
- γ-mercoptopropyltrimethoxysilane, γ-mercoptopropyldimethoxymethylsilane, and other mercapto functional silane compounds, and
- (2) a graft copolymer comprising said isobutylene rubber particles and a vinyl monomer graft-polymerized thereon,
- and 99 to 1 part by weight of a thermoplastic resin.
Dependencies are inferred from the claim text.