Composition for the production of hydrophilic polystyrene material

Patent metadata

Field	Value
Publication number	US-9359496-B2
Application number	US-201314399812-A
Country	US
Kind code	B2
Filing date	Apr 17, 2013
Priority date	May 9, 2012
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

The invention relates to a composition Z comprising a component B1, a component B2, a component D, a component E and a component P, wherein
the component B1 is a polyethylene glycol having a hydroxyl number of from 25 to 600 mg KOH/g and an average molecular weight of 200 to 4000 g/mol; the component B2 is a polyethylene glycol having a hydroxyl number of from 0.1 to 24 mg KOH/g and an average molecular weight of higher than 4000 to about 10,000,000 g/mol; the component D is an earth alkali carbonate, the component E is a phyllosilicate, and the component P is a polystyrene and/or an alloy thereof.

Composition Z is suitable to increase the hydrophilic properties of processed solid or foamed polystyrene material, especially for making a film, sheet or food tray.

First claim

The invention claimed is:

1. A composition Z comprising a component B1, a component B2, a component D, a component E and a component P, wherein
the component B1 is a polyethylene glycol having a hydroxyl number of from 25 to 600 mg KOH/g and an average molecular weight of 200 to 4000 g/mol;
the component B2 is a polyethylene glycol having a hydroxyl number of from 0.1 to 24 mg KOH/g and an average molecular weight of higher than 4000 to about 10,000,000 g/mol;
the component D is an earth alkali carbonate,
the component E is a phyllosilicate,
and the component P is a polystyrene.

2. The composition Z as claimed in claim 1 , comprising of from 0.06 to 90% by weight of the sum of the components B1, B2, D and E, with the % by weight being based on the total weight of the composition Z.

3. The composition Z as claimed in claim 1 , wherein the composition Z comprises of from 1.25 to 50% by weight of the sum of the components B1, B2, D, and E, with the % by weight being based on the total weight of the composition Z.

4. The composition Z as claimed in claim 1 , wherein the composition Z comprises the component B1 and component B2 in a weight ratio of component B1 to component B2 of from 0.1 to 10.0.

5. The composition Z as claimed in claim 1 , wherein the composition Z comprises the component B1 and component B2 in a weight ratio of component B1 to component B2 of from 0.3 to 1.0.

6. The composition Z as claimed in claim 1 , wherein the composition Z comprises
0.2 to 20% by weight of component B1,
0.4 to 40% by weight of component B2,
0.2 to 20% by weight of component D,
0.1 to 10% by weight of component E,
10 to 99.1% by weight of component P,
with the weight % being based on the total weight of composition Z.

7. The composition Z as claimed in claim 1 , wherein the composition Z is a masterbatch MB and comprises
1.5 to 20% by weight of component B1,
3 to 40% by weight of component B2,
1.5 to 20% by weight of component D,
0.75 to 10% by weight of component E, and
10 to 93.25% by weight of component P,
with the weight % being based on the total weight of composition Z.

8. The composition Z as claimed in claim 1 , wherein the composition Z is a Compound and comprises
0.0167 to 1.47% by weight of component B1,
0.0333 to 2.94% by weight of component B2,
0.0167 to 1.47% by weight of component D,
0.00835 to 0.735% by weight of component E, and
93.385 to 99.92495% by weight of component P,
with the weight % being based on the total weight of composition Z.

9. The composition Z as claimed in claim 1 , wherein component P is a styrene homopolymer, an alkylstyrene homopolymer or a styrene copolymer.

10. The composition Z as claimed in claim 9 , wherein component P is a high impact polystyrene.

11. The composition Z as claimed in claim 1 , wherein component B1 is a polyethylene glycol having a hydroxyl number of from 28 to 40 mg KOH/g and an average molecular weight of 3000 to 3500 g/mol;
the component B2 is a polyethylene glycol having a hydroxyl number of from 4 to 5 mgKOH/g, and an average molecular weight of 30,000 to 40,000 g/mol.

12. A process for preparing a composition Z comprising the step of mixing together components B1, B2, D, E and P wherein
the component B1 is a polyethylene glycol having a hydroxyl number of from 25 to 600 mg KOH/g and an average molecular weight of 200 to 4000 g/mol;
the component B2 is a polyethylene glycol having a hydroxyl number of from 0.1 to 24 mg KOH/g and an average molecular weight of higher than 4000 to about 10,000,000 g/mol;
the component D is an earth alkali carbonate,
the component E is a phyllosilicate,
and the component P is a polystyrene.

13. An absorbent article of solid non-foamed or foamed polystyrene comprising a composition Z as claimed in claim 1 .

14. A solid foamed or non-foamed polystyrene article comprising a composition Z as claimed in claim 1 .

15. The article as claimed in claim 14 , wherein the article is a film, a sheet or a container.

16. The article as claimed in claim 14 , wherein the article is a food tray.

Assignees

• Kolditz Pirko
• Liebehentschel Lutz
• Clariant Int Ltd

Inventors

• Kolditz Pirko
• Liebehentschel Lutz

Classifications

• C08L25/06 Primary

  Polystyrene · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C08J9/0061

  characterized by the use of several polymeric components · CPC title

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title

• C08J3/226

  using a polymer as a carrier · CPC title