Containers comprising propylene-based terpolymers

Patent metadata

Field	Value
Publication number	US-10550212-B2
Application number	US-201515511976-A
Country	US
Kind code	B2
Filing date	Sep 9, 2015
Priority date	Sep 24, 2014
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

The present disclosure provides an article of manufacture made from or containing a propylene-based terpolymer, having
(i) ethylene-derived units in the range from about 0.5 wt. % to about 1.8 wt. %; (ii) 1-butene-derived units in the range from about 1.5 wt. % to about 2.5 wt. %; (iii) a ratio of C 2 wt %/C 4 wt % in the range from about 0.40 to about 0.80, wherein C 2 wt % is the weight percent of ethylene-derived units and C 4 wt % is the weight percent of 1-butene-derived units; (iv) a melt flow rate in the range from about 30 g/10 min to about 80 g/10 min; (v) a xylene soluble fraction at 25° C. lower than about 5.0 wt. %; and (vi) a melting point higher than about 140° C.

The article can be a container, which can be used for food applications.

First claim

What is claimed is:

1. An article of manufacture comprising:
(A) a propylene-based terpolymer comprising
(I) a propylene, ethylene, 1-butene terpolymer having
(i) ethylene-derived units in the range of from about 0.5 wt. % to about 1.8 wt. % (C 2 wt %), based upon the total weight of the propylene-based terpolymer;
(ii) 1-butene-derived units in the range from about 1.6 wt. % to about 2.4 wt. % (C 4 wt %), based upon the total weight of the propylene-based terpolymer;
(iii) a ratio of C 2 wt %/C 4 wt % in the range from about 0.40 to about 0.80; wherein C 2 wt % is the weight percent of ethylene derived units and C 4 wt % is the weight percent of 1-butene-derived units;
(iv) a melt flow rate, MFR measured according to ISO 1133, 230° C., 2.16 kg in the range of from greater than 50 g/10 mins to about 80 g/10 mins;
(v) a xylene soluble fraction at 25° C. lower than about 5.0 wt. % based on the total weight of the propylene-based terpolymer;
and
(vi) a melting point higher than about 140° C.

2. The article of manufacture according to claim 1 wherein the content of the ethylene-derived units is in the range from about 0.7 wt % to about 1.5 wt. %.

3. The article of manufacture according to claim 1 wherein the ratio of C2 wt %/C4 wt % is in the range from about 0.50 to about 0.70.

4. The article of manufacture according to claim 1 wherein melting point is in the range between about 140° C. and about 152° C.

5. The article of manufacture according to claim 1 wherein the propylene-based terpolymer has haze measured on 1 mm plaque lower than about 15%.

6. The article of manufacture according to claim 1 wherein the article is a container.

7. A propylene-based terpolymer comprising:
(A) propylene monomers,
(B) ethylene monomers, and
(C) 1-butene monomers,
Having
(i) ethylene-derived units in the range of from about 0.5 wt. % to about 1.8 wt. % (C 2 wt %), based upon the total weight of the propylene-based terpolymer;
(ii) 1-butene-derived units in the range from about 1.6 wt. % to about 2.4 wt. % (C 4 wt %), based upon the total weight of the propylene-based terpolymer;
(iii) a ratio of C 1 wt %/C 4 wt % in the range from about 0.40 to about 0.80; wherein C 2 wt % is the weight percent of ethylene derived units and C 4 wt % is the weight percent of 1-butene-derived units;

(iv) a melt flow rate, MFR measured according to ISO 1133, 230° C., 2.16 kg in the range of from greater than 50 g/10 mins to about 80 g/10 mins;
(v) a xylene soluble fraction at 25° C. lower than about 5.0 wt. % based on the total weight of the propylene-based terpolymer;
and
(vi) a melting point higher than about 140° C.

Assignees

• Basell Poliolefine Italia Srl

Inventors

• Destro Mara
• Ciarafoni Marco
• Massari Paola
• Caputo Tiziana
• Bohm Thomas

Classifications

• B65D1/02

  Bottles or similar containers with necks or like restricted apertures, designed for pouring contents (thermally-insulated containers B65D81/38, A47J41/00; {feeding-bottles A61J9/00}) · CPC title

• B65D1/00

  Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material (with curved or partially-curved cross-section made by winding or bending paper B65D3/00; with polygonal cross-section formed by folding B65D5/00; specially constructed to be opened by cutting, piercing or tearing of wall portions B65D17/00; rigid pallets with side walls B65D19/02) · CPC title

• C08F2/001

  Multistage polymerisation processes characterised by a change in reactor conditions without deactivating the intermediate polymer (C08F295/00, C08F297/00 take precedence) · CPC title

• C08F210/06 Primary

  Propene · CPC title

• C08F210/16

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title