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US 9,434,835 B2Granted
Blend for use in automobile application
AssigneeTotal Petrochemicals Research Feluy
InventorsChristian Ter Woort, Emmanuelle Koscher, Filip Vandoorne
Life of this patent
Estimating the term…
Abstract
The present invention relates to a blend comprising metallocene polypropylene and an elastomer for automobile parts, characterized in that said blend has low volatile organic compounds emissions. The invention also relates to the use of said blend in parts for automobiles.
Claims20
An automobile part comprising:
- a blend, said blend comprising:
- (a) from 99.1 wt. % to 20 wt. % of a polypropylene homopolymer produced in the presence of a metallocene-based catalyst, wherein the metallocene-based catalyst has C-2 symmetry, wherein the metallocene-based catalyst is selected from the group consisting of dimethylsilanediyl-bis(cyclopentadienyl)zirconium dichloride, dimethylsilanediyl-bis(2-methyl-cyclopentadienyl)zirconium dichloride, dimethylsilanediyl-bis(3-methyl-cyclopentadienyl)zirconium dichloride, dimethylsilanediyl-bis(3-tert-butyl-cyclopentadienyl)zirconium dichloride, dimethylsilanediyl-bis(3-tert-butyl-5-methyl-cyclopentadienyl)zirconium dichloride, dimethylsilanediyl-bis(2,4-dimethyl-cyclopentadienyl)zirconium dichloride, dimethylsilanediyl-bis(indenyl)zirconium dichloride, dimethylsilanediyl-bis(2-methyl-indenyl)zirconium dichloride, dimethylsilanediyl-bis(3-methyl-indenyl)zirconium dichloride, dimethylsilanediyl-bis(3-tert-butyl-indenyl)zirconium dichloride, dimethylsilanediyl-bis(4,7-dimethyl-indenyl)zirconium dichloride, dimethylsilanediyl-bis(tetrahydroindenyl)zirconium dichloride, dimethylsilanediyl-bis(benzindenyl)zirconium dichloride, dimethylsilanediyl-bis(3,3′-2-methyl-benzindenyl)zirconium dichloride, dimethylsilanediyl-bis(4-phenyl-indenyl)zirconium dichloride, ethylene-bis(indenyl)zirconium dichloride, ethylene-bis(tetrahydroindenyl)zirconium dichloride, and isopropylidene-(3-tert-butyl-5-methyl-cyclopentadienyl)(fluorenyl) zirconium dichloride;
- (b) from 0.1 wt. % to 50 wt. % of an elastomer;
- and
- (c) a Ziegler-Natta catalyzed propylene homopolymer, a Ziegler-Natta catalyzed propylene copolymer, or mixtures thereof;
- said blend having less than 45 ppm of volatile organic compounds (determined in accordance with VDA-278).
3 more elements
An injection molded automobile part comprising:
- a blend, said blend comprising:
- (a) from 99.1 wt. % to 20 wt. % of a polypropylene homopolymer produced in the presence of a metallocene-based catalyst;
- (b) from 0.1 wt. % to 50 wt. % of an elastomer;
- and
- (c) a propylene polymer polymerized in the presence of a Ziegler-Natta catalyst;
- said blend having less than 45 ppm of volatile organic compounds (determined in accordance with VDA-278).
3 more elements
An automobile part comprising:
- a blend, said blend comprising:
- (a) from 99.1 wt. % to 20 wt. % of a polypropylene homopolymer produced in the presence of a metallocene-based catalyst;
- (b) from 0.1 wt. % to 50 wt. % of an elastomer;
- and
- (c) a propylene polymer selected from Ziegler-Natta catalyzed propylene homopolymers, Ziegler-Natta catalyzed propylene copolymers, and mixtures thereof;
- said blend having less than 45 ppm of volatile organic compounds (determined in accordance with VDA-278);
- wherein the metallocene-based catalyst is represented by formula (I)
- μ-R1(C5R2R3R4R5)(C5R6R7R8R9)MX1X2 (I)
- wherein bridged R1 is SiR10R11;
- wherein R10 and R11 are each independently selected from the group consisting of C1-C10 alkyl, C5-C7 cycloalkyl, and C6-C15 aryl, or wherein R10 and R11 form a cyclic saturated or non-saturated C4-C10 ring;
- and
- wherein M is Zr;
- wherein X1 and X2 are independently selected from the group consisting of halogen, hydrogen, and C1-C10 alkyl;
- and
- wherein (C5R2R3R4R5) and (C5R6R7R8R9) are indenyl of the formula C9R12R13R14R15R16R17R18R19;
- and
- wherein R12, R13, R14, R15, R16, R17, R18, and R19 are each independently selected from the group consisting of hydrogen, C1-C10 alkyl, C5-C7 cycloalkyl, C6-C15 aryl, and alkylaryl with C1-C10 alkyl and C6-C15 aryl, or wherein two neighboring R of R12, R13, R14, R15, R16, R17, R18, and R19 form a cyclic saturated or non-saturated C4-C10 ring.
14 more elements
Dependencies are inferred from the claim text.