Polyester compounds having enhanced hydrophobic surface properties

Patent metadata

Field	Value
Publication number	US-2016130411-A1
Application number	US-201414900574-A
Country	US
Kind code	A1
Filing date	Jul 10, 2014
Priority date	Jul 12, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

A masterbatch having reactive silicone as a hydrophobic additive, the polyester compound that the silicone-containing masterbatch has been let down into, and the plastic articles and films from such compounds having enhanced hydrophobic properties are disclosed. Films having a Water Contact Angle of at least 76° (ASTM D7490-08) are exemplified.

First claim

What is claimed is:

1 . A masterbatch for polyester, comprising:
(a) polyester carrier; (b) α, ω -difunctional polydimethylsiloxane; (c) a chain extender selected from the group consisting of pyromellitic dianhydride, Bis(2,4-ditert-butylphenyl) pentaerytritol diphosphite, styrene methyl methacrylate glycidyl methacrylate terpolymer, and combinations thereof; and (d) optionally, other additives comprising a catalyst.

2 . The masterbatch of claim 1 , wherein the ingredients by weight percent of the masterbatch are listed in the chart below.

Polyester Carrier
80%-99%

α, ω -difunctional
 1%-20%

polydimethylsiloxane

Optional catalyst
0.1%-2%  

Chain extender
0.25%-2%  

Other optional additives
  0%-10%.

3 . The masterbatch of claim 1 , wherein the α, ω -difunctional polydimethylsiloxane comprises epoxy-functional siloxanes or carbinol-functional siloxanes.

4 . A hydrophobic polyester compound comprising the masterbatch of claim 1 and polyester resin.

5 . An enhanced hydrophobic polyester compound comprising:
(a) polyester matrix and (b) a hydrophobic polyester masterbatch of claim 1 .

6 . The polyester compound of claim 5 , wherein the α, ω -difunctional polydimethylsiloxane of the masterbatch comprises epoxy-functional siloxanes or carbinol-functional siloxanes.

7 . The polyester compound of claim 5 , wherein the amount of masterbatch is between about 10% to about 70% of the weight percent of the polyester compound.

8 . The polyester compound of claim 5 , wherein the polyester of the masterbatch comprises polyethylene terephthalate (PET), Polycyclohexylenedimethylene terephthalate (PCT), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyethylene terephthalate glycol-modified (PETG), polylactic acid (PLA), Poly(butylene adipate-co-terphthalate) (PBAT), polyhydroxyalkanoates (PHA) including polyhydroxybutyrate-co-valerate (PHBV) or polyhydroxybutyrate (PHB), and Polybutylene succinate (PBS).

9 . The polyester compound of claim 5 , wherein the additive is selected from the group consisting of anti-blocking agents; adhesion promoters; biocides; anti-fogging agents; anti-static agents; bonding, blowing and foaming agents; dispersants; fillers and extenders; fire and flame retardants and smoke suppressants; impact modifiers; initiators; lubricants; micas; pigments, colorants and dyes; plasticizers; processing aids; other slip or release agents; silanes, titanates and zirconates; stabilizers; stearates; ultraviolet light absorbers; viscosity regulators; waxes; and combinations of them.

10 . The polyester compound of claim 5 , wherein the polyester of the polyester matrix comprises polyethylene terephthalate (PET), Polycyclohexylenedimethylene terephthalate (PCT), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyethylene terephthalate glycol-modified (PETG), polylactic acid (PLA), Poly(butylene adipate-co-terphthalate) (PBAT), polyhydroxyalkanoates (PHA) including polyhydroxybutyrate-co-valerate (PHBV) or polyhydroxybutyrate (PHB), and Polybutylene succinate (PBS).

11 . The polyester compound of claim 5 , in the shape of an injection molded plastic article, an extruded plastic article, a calendered plastic article, a blow molded plastic article, or a thermoformed plastic article.

12 . A film having at least one layer comprised of the polyester compound of claim 5 ,

13 . A laminate of the film of claim 12 , wherein there is more than one film layer, and wherein each layer comprises same or different ingredients.

14 . The laminate of claim 13 , wherein there is a skin layer contacting one surface of a core layer also having an opposing surface; and wherein the skin layer has a thickness between about 0.5 micrometers and about 1 millimeter.

15 . The laminate of claim 14 , further comprising a second skin layer contacting the opposing surface of the core layer, wherein the core layer comprises polyester resin without the masterbatch.

16 . The film of claim 12 , wherein the compound in the form of a film has a Water Contact Angle according to ASTM D7490-08 at least about 30 percent higher as compared with a film of the same polyester without the masterbatch.

17 . The film of claim 16 , wherein the Water Contact Angle is at least 76°.

18 . The film of claim 16 , wherein the Water Contact Angle is at least 78°.

19 . The film of claim 16 , wherein the Water Contact Angle is at least 80°.

20 . The film of claim 16 , wherein the Water Contact Angle is at least 81°.

21 . A fiber comprised of the polyester compound of claim 5 .

Assignees

• Polyone Corp

Inventors

• Alric Jerome
• Huart Delphine
• Habay Andre
• Waeler Jerome

Classifications

• C08J2467/03

  the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings · CPC title

• B32B2419/00

  Buildings or parts thereof · CPC title

• C08L2310/00

  Masterbatches · CPC title

• C08L2205/05

  containing polymer components which can react with one another · CPC title

• D01F6/84

  from copolyesters · CPC title