Vibration dampening compositions and methods thereof
AssigneeGeneral Electric Company
InventorsSteven F. Hubbard, Sai-Pei Ting
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Abstract
The present invention relates to methods to improve the dampening characteristics of compositions and the improved compositions. The compositions made by the method comprises a polymer system selected from the group consisting of immiscible polymer blends, miscible polymer blends, copolymers, thermoplastic polymers and thermosetting polymers, and a block copolymer comprising: at least one block derived from aromatic vinyl units and at least one block derived from at least isoprene and a vinyl aromatic monomer and optionally butadiene, and having a glass transition temperature of at least 10° C.
Claims31
A composition comprising:
- (a) a polymer system selected from the group consisting of immiscible polymer blends containing polyamides, miscible polymer blends containing polyamides, and polyamides, and
- (b) a block copolymer comprising:
- (i) at least one block derived from aromatic vinyl units and
- (ii) at least one block derived from at least isoprene and a vinyl aromatic monomer and having a glass transition temperature of at least 10° C.
A composition comprising a blend of:
- (a) a polymer system comprising a thermosetting polymer, and
- (b) a block copolymer comprising:
- (i) at least one block derived from aromatic vinyl units and
- (ii) at least one block derived from at least isoprene and a vinyl aromatic monomer and having a glass transition temperature of at least 10° C.
An article molded from a composition comprising a blend of:
- (a) a polymer system comprising a thermosetting polymer, and
- (b) a block copolymer comprising:
- (i) at least one block derived from aromatic vinyl units and
- (ii) at least one block derived from at least isoprene and a vinyl aromatic monomer and having a glass transition temperature of at least 10° C.
Dependencies are inferred from the claim text.