HETEROPHASIC COMPOSITION
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IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0765949
(2016-10-21)
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공개번호 |
US-0298171
(2018-10-18)
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우선권정보 |
EP-15191181.5 (2015-10-23) |
국제출원번호 |
PCT/EP2016/075304
(2016-10-21)
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발명자
/ 주소 |
- Grestenberger, Georg
- Kahlen, Susanne
- Sandholzer, Martina
- Potter, Gregory
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
Modified heterophasic composition to improve the surface appearance of automobil parts.
대표청구항
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1. A composition comprising (a) a heterophasic composition (HECO) comprising (a1) a (semi)crystalline polypropylene (PP) and(a2) an elastomeric propylene copolymer (ESC) dispersed in said (semi)crystalline polypropylene (PP);(b) an inorganic filler (F), and(c) a modified heterophasic composition (mH
1. A composition comprising (a) a heterophasic composition (HECO) comprising (a1) a (semi)crystalline polypropylene (PP) and(a2) an elastomeric propylene copolymer (ESC) dispersed in said (semi)crystalline polypropylene (PP);(b) an inorganic filler (F), and(c) a modified heterophasic composition (mHECO) comprising (c1) a (semi)crystalline polypropylene (mPP);(c2) an elastomeric propylene copolymer (mESC) dispersed in said (semi)crystalline polypropylene (mPP);(c3) at least one of units (D) derived from bifunctionally unsaturated monomer(s) (D′) selected from the group consisting of divinyl compounds, allyl compounds, and dienes, or multifunctionally unsaturated low molecular weight polymer (D″) being a polybutadiene or a copolymer of polybutadiene and styrene having 1,2-(vinyl) in the polymer chain and having a number average molecular weight (Mn) of equal or below 10000 g/mol, and(c4) a xylene cold soluble fraction (XCS) in the range of 15 to 30 wt.-%;wherein the heterophasic composition (HECO) is different from the modified heterophasic composition (mHECO), andthe heterophasic composition (HECO), the inorganic filler (F), and the modified heterophasic composition (mHECO) make up together at least 90 wt.-%, based on a total weight of the composition. 2. The composition according to claim 1, wherein the modified heterophasic composition (mHECO) has (a) a gel content of below 1.0 wt.-%. 3. The composition according to claim 1, wherein the xylene soluble fraction (XCS) of the modified heterophasic composition (mHECO) has an intrinsic viscosity (IV) in the range of 1.5 to 2.6 dl/g. 4. The composition according to claim 1, wherein the modified heterophasic composition (mHECO) has a melt flow rate MFR2 (230° C.) measured according to ISO 1133 from 20 to 50 g/10 min. 5. The composition according to claim 1, wherein the modified heterophasic composition (mHECO) comprises at least one of: (a) a comonomer content in the range of 12 to 28 mol-%; or (b) at least 0.1 wt.-% of units (D). 6. The composition according to claim 1, wherein (a) the bifunctionally unsaturated monomers (D′) used for the units (D) are selected from the group consisting of 1,3-butadiene, isoprene, dimethylbutadiene, and divinylbenzene; or (b) the multifunctionally unsaturated low molecular weight polymer (D″) is a polybutadiene having a number average molecular weight (Mn) of equal or below 10000 g/mol;or(c) both (a) and (b). 7. The composition according to claim 1, wherein the heterophasic composition (HECO) has at least one of: (a) a comonomer content, based on the total weight of the heterophasic composition (HECO), in the range of 10 to 30 mol-%; or (b) a xylene soluble fraction (XCS) in the range of 20 to 45 wt.-%; or (c) a melt flow rate MFR2 (230° C.) measured according to ISO 1133 from 5 to 30 g/10 min. 8. The composition according to claim 1, wherein the xylene soluble fraction (XCS) of the heterophasic composition (HECO) has (a) an intrinsic viscosity (IV) in the range of 1.5 to 4.5 dl/g;(b) a comonomer content, based on the total weight of the xylene soluble fraction (XCS) of the heterophasic composition (HECO), in the range of 30 to 60 mol-%. 9. The composition according to claim 1, wherein the xylene insoluble fraction (XCI) of the heterophasic composition (HECO) has an intrinsic viscosity (IV) in the range of 0.8 to 1.8 dl/g. 10. The composition according to claim 1, wherein the difference of the intrinsic viscosity (IV) of the xylene insoluble fraction (XCI) of the heterophasic composition (HECO) to the intrinsic viscosity (IV) of the xylene soluble fraction (XCS) of the heterophasic composition (HECO) is in the range of 0.5 to 5.8. 11. The composition according to claim 1, wherein the inorganic filler (F) is talc. 12. The composition according to claim 1, wherein the composition comprises (a) 45 to 85 wt.-%, based on the total weight of the composition, of the heterophasic composition (HECO);(b) 5 to 25 wt.-%, based on the total weight of the composition, of the inorganic filler (F); and(c) 5 to 30 wt.-%, based on the total weight of the composition, of the modified heterophasic composition (mHECO). 13. An article comprising the composition according to claim 1. 14. The article according to claim 12 being an automotive article. 15. A process comprising: reducing tigerskin of a composition with the modified heterophasic composition (mHECO) defined in claim 1, wherein the composition comprises a modified heterophasic composition (mHECO) and a polypropylene (P) different from the modified heterophasic composition (mHECO). 16. The process according to claim 15, wherein the composition comprises at least one of: (a) polypropylene (P) in the heterophasic composition (HECO) as defined in claim 1; or (b) talc as the inorganic filler (F) or (c) (c1), (c2), and (c3) wherein: (c1) 45 to 85 wt.-%, based on the total weight of the composition, of the heterophasic composition (HECO);(c2) 5 to 25 wt.-%, based on the total weight of the composition, of the inorganic filler (F); and(c3) 5 to 30 wt.-%, based on the total weight of the composition, of the modified heterophasic composition (mHECO).
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