IP Library Granted Patent US 9,738,761
Granted Patent B2
US 9,738,761 · App. 14/762,729 · Granted Aug 22, 2017

Injection moulded polypropylene articles

Inventor: Gaetane Hallot (Grimbergen, BE)
Assignee: INEOS EUROPE AG
C08J5/00C08K5/0083C08L23/12C08L23/14C08L23/16C08J2323/12C08J2423/08C08J2423/14C08L2203/18
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Quick Facts
Patent No.
US 9,738,761
App. No.
14/762,729
Granted
Aug 22, 2017
Kind
B2
Abstract

Injection molded article made from a composition containing 81-88 wt % of a propylene homopolymer (A) having a melt flow rate of between 1 and 2 g/10 min, 12-19 wt % of a propylene-ethylene copolymer (B) containing 45-65 wt % of ethylene, and 50-10000 ppm by weight of a nucleating agent. The total ethylene content of the composition is 6-10 wt %, and the melt flow rate (MFR) of the composition is 0.7-2 g/10 min.

Claims (13)

1. Injection moulded article made from a composition comprising:

81-88 wt % of a propylene homopolymer (A) having a melt flow rate of between 1 and 2 g/10 min;

12-19 wt % of a propylene-ethylene copolymer (B) containing 45-65 wt % of ethylene; and

50-10000 ppm by weight of a nucleating agent,

wherein propylene homopolymer (A) and propylene-ethylene copolymer (B) together make up at least 98 wt % of the polymer content of the composition, the total ethylene content of the composition is 6-10 wt %, and the melt flow rate (MFR) of the composition is 0.7-2 g/10 min.

2. Article according to claim 1 , wherein the composition has a spiral flow, measured at a rate of 20 mm/s, of greater than 300 mm.

3. Article according to claim 1 , wherein the amount of propylene-ethylene copolymer (B) in the composition is 14-17 wt %.

4. Article according to claim 1 , wherein copolymer (B) of the composition contains 50-60 wt % of ethylene.

5. Article according to claim 1 , wherein the total ethylene content of the composition is 6.5-9.5 wt %.

6. Article according to claim 1 , wherein the total ethylene content of the composition is 7-9.5 wt %.

7. Article according to claim 1 , wherein the nucleating agent in the composition is sodium benzoate, disodium hexahydrophthalate, 1,3-O-2,4-bis (3,4-dimethylbenzylidene) sorbitol, sodium 2,2′-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, aluminum bis [2,2′-methylene-bis-(4,6-di-tert-butylphenyl)phosphate], and talc, or a calcium, strontium, monobasic aluminum or lithium salt of 1,2 cyclohexane dicarboxylic acid.

8. Article according claim 1 , wherein the nucleating agent is the calcium salt of 1,2 cyclohexane dicarboxylic acid.

9. Article according to claim 1 , wherein the composition has a flexural modulus of at least 1200 MPa.

Assignments (2)
SECURITY INTEREST Recorded May 4, 2017
From: INEOS TECHNOLOGIES USA LLC; INEOS EUROPE AG
To: BARCLAYS BANK PLC
Reel/Frame 042398/0916 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2015
From: HALLOT, GAETANE
To: INEOS EUROPE AG
Reel/Frame 036156/0431 →
Priority Claims (1)
EP 13153054 · Jan 29, 2013 · regional
Continuity (1)
Related Publication 20150322215A1 · Nov 12, 2015