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US 7,071,259 B2Granted
Functionalized propylene polymer compositions and composites containing same
AssigneeEquistar Chemicals, LP
InventorMaged G. Botros
Life of this patent
Estimating the term…
Abstract
Functionalized propylene polymer compositions useful as coupling/compatibilizing agents are provided. The compositions are a mixture of two different functionalized propylene polymers. Polypropylene composites containing fillers and/or non-compatible resins and formulated using the mixed functionalized coupling/compatibilizing agents are also provided.
Claims17
A composite comprising:
- (i) 30 to 98.995 weight percent polypropylene base resin;
- (ii) 1 to 70 weight percent dispersed component which is a polymer incompatible with said polypropylene base resin selected from the group consisting of ethylene-vinyl alcohol copolymer, polyamide, polyester, polyvinylchloride, polyvinylidenedichloride, ethylene-carbon monoxide copolymer and terpolymer, polycarbonate, polyether, high impact polystyrene, styrene-acrylonitrile copolymer and acrylonitrile-butadiene-styrene terpolymer;
- and
- (iii) 0.005 to 10 weight percent functionalized propylene polymer composition comprising (a) 5 to 95 weight percent, based on the weight of the functionalized composition, propylene-ethylene impact copolymer grafted with maleic anhydride and having a graft to melt flow rate ratio of 0.5 or above, said impact copolymer being a reactor-made intimate mixture of propylene homopolymer and ethylene-propylene copolymer rubber produced in a gas-phase, stirred-bed, multi-stage polymerization process, and (b) 95 to 5 weight percent, based on the weight of the functionalized composition, propylene homopolymer grafted with maleic anhydride.
1 more element
A composite comprising:
- (i) 30 to 98.995 weight percent polypropylene base resin;
- (ii) 1 to 70 weight percent dispersed component which is a filler material selected from the group consisting of inorganic compounds, siliceous materials, cellulosic materials and nanofillers;
- and
- (iii) 0.005 to 10 weight percent functionalized propylene polymer composition comprising (a) 5 to 95 weight percent, based on the weight of the functionalized composition, propylene-ethylene impact copolymer grafted with maleic anhydride and having a graft to melt flow rate ratio of 0.5 or above, said impact copolymer being a reactor-made intimate mixture of propylene homopolymer and ethylene-propylene copolymer rubber produced in a gas-phase, stirred-bed, multi-stage polymerization process and (b) 95 to 5 weight percent, based on the weight of the functionalized composition, propylene homopolymer grafted with maleic anhydride.
1 more element
Dependencies are inferred from the claim text.