Mixed pellet

Patent metadata

Field	Value
Publication number	US-9376550-B2
Application number	US-201314413959-A
Country	US
Kind code	B2
Filing date	Jul 3, 2013
Priority date	Jul 10, 2012
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

Provided is a masterbatch in which blocking in a masterbatch of a hindered amine compound and a benzoate compound, which is caused by long-term storage under a high-temperature environment, is improved. Also provided is a mixed pellet comprising a mixture of (A) a masterbatch pellet that comprises not less than 30 parts by mass of a hindered amine compound represented by the following Formula (1) with respect to 100 parts by mass of a polyolefin resin and (B) a masterbatch pellet that comprises not less than 30 parts by mass of a benzoate compound represented by the following Formula (2) with respect to 100 parts by mass of a polyolefin, the mixed pellet wherein not less than 70% by mass thereof as a whole is composed of the masterbatch pellets of (A) and (B):

First claim

The invention claimed is:

1. A pellet mixture, comprising a mixture of (A) a masterbatch pellet that comprises not less than 30 parts by mass of a hindered amine compound represented by Formula (1) with respect to 100 parts by mass of a polyolefin and without a benzoate compound represented by Formula (2); and (B) a masterbatch pellet that comprises not less than 30 parts by mass of the benzoate compound represented by Formula (2) with respect to 100 parts by mass of a polyolefin and without the hindered amine compound represented by Formula (1); wherein not less than 70% by mass thereof as a whole is composed of said masterbatch pellets of (A) and (B);

wherein R 1 represents a hydrogen atom, a hydroxy group, an alkyl, hydroxyalkyl, alkoxy or hydroxyalkoxy group having 1 to 30 carbon atoms, or an oxy radical; and R 2 represents an alkyl group having 1 to 30 carbon atoms or an alkenyl group having 2 to 30 carbon atoms;

wherein R 3 and R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an arylalkyl group having 7 to 30 carbon atoms; and R 5 represents an alkyl group having 1 to 30 carbon atoms.

2. The pellet mixture according to claim 1 , wherein the content of said hindered amine compound and said benzoate compound is 30 to 60% by mass with respect to the whole mixed pellet.

3. The pellet mixture according to claim 1 , wherein one or both of said masterbatch pellets of (A) and (B) comprise at least one aromatic metal phosphate represented by Formula (3); wherein the content of said aromatic metal phosphate(s) in each of said masterbatch pellets of (A) and/or (B) is 0.3 to 5 parts by mass with respect to 100 parts by mass of said polyolefin resin;

wherein R 6 represents an alkyl group having 4 to 8 carbon atoms; R 7 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; R 8 represents an alkylidene group having 1 to 4 carbon atoms; M represents an alkali metal, an alkaline earth metal or aluminum; when M is an alkali metal, n is 1 and q is 0; when M is an alkaline earth metal, n is 2 and q is 0; and, when M is aluminum, n is 1 or 2 and q represents (3-n).

4. A polyolefin resin composition, comprising the pellet mixture according to claim 1 in a polyolefin resin.

5. A molded article, obtained by molding the polyolefin resin composition according to claim 4 .

6. The pellet mixture according to claim 1 , wherein a mixing ratio of the masterbatch pellet of (A) and the masterbatch pellet of (B) is (A):(B)=1:1 to 4:1 by mass.

7. The pellet mixture according to claim 3 , wherein said masterbatch pellets of (A) comprise at least one aromatic metal phosphate represented by Formula (3).

8. The pellet mixture according to claim 3 , wherein said masterbatch pellets of (B) comprise at least one aromatic metal phosphate represented by Formula (3).

9. The pellet mixture according to claim 4 , wherein the polyolefin resin is a polypropylene.

10. A method for producing the pellet mixture according to claim 1 , comprising the steps of separately producing the masterbatch pellet of (A) and the masterbatch pellet of (B) and then mixing the masterbatch pellet of (A) and masterbatch pellet of (B).

Assignees

• Adeka Corp

Inventors

• Ayabe Takashi
• Yamashita Kenji

Classifications

• C08K9/08

  Ingredients agglomerated by treatment with a binding agent · CPC title

• C08K5/527

  Cyclic esters · CPC title

• C08K5/3435

  Piperidines · CPC title

• C08L23/12

  Polypropene · CPC title

• C08K5/13

  Phenols; Phenolates · CPC title