Cyclic carbodiimide compound, polyester film, back sheet for solar cell module, and solar cell module

Patent metadata

Field	Value
Publication number	US-9716189-B2
Application number	US-201414539689-A
Country	US
Kind code	B2
Filing date	Nov 12, 2014
Priority date	May 17, 2012
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

A polyester film including a cyclic carbodiimide compound represented by the following Formula (O-1) has good film thickness uniformity without increase in viscosity. R 1 and R 5 represent an alkyl group, an aryl group, or an alkoxy group; R 2 to R 4 and R 6 to R 8 represent a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; X 1 and X 2 represent a single bond, —O—, —CO—, —S—, —SO 2 —, —NH—, or —CH 2 —; and L 1 represents a divalent linking group.

First claim

What is claimed is:

1. A cyclic carbodiimide compound which is represented by the following Formula (O-1) or (O-2):

wherein each of R 1 and R 5 independently represents an alkyl group, an aryl group, or an alkoxy group; each of R 2 to R 4 and R 6 to R 8 independently represents a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; R 1 to R 8 are not to be bonded to each other to form a ring; each of X 1 and X 2 independently represents —O—, —CO—, —S—, —SO 2 —, or —NH—; and L 1 represents a divalent aliphatic group having 1 to 20 carbon atoms;

wherein each of R 11 , R 15 , R 21 and R 25 independently represents an alkyl group, an aryl group, or an alkoxy group; each of R 12 to R 14 , R 16 to R 18 , R 22 to R 24 , and R 26 to R 28 independently represents a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; R 11 to R 28 are not to be bonded to each other to form a ring; each of X 11 , X 12 , X 21 , and X 22 independently represents —O—, —CO—, —S—, —SO 2 —, or —NH—; and L 2 represents a tetravalent aliphatic group having 1 to 20 carbon atoms.

2. The cyclic carbodiimide compound according to claim 1 , wherein both R 2 and R 6 in Formula (O-1) are hydrogen atoms.

3. The cyclic carbodiimide compound according to claim 1 , wherein each of R 1 , R 5 , R 11 , R 15 , R 21 and R 25 in Formulas (O-1) and (O-2) independently represents a secondary or tertiary alkyl group, or an aryl group.

4. A polyester film, comprising a cyclic carbodiimide compound which is represented by the following Formula (O-1) or (O-2), and a polyester:

wherein each of R 1 and R 5 independently represents an alkyl group, an aryl group, or an alkoxy group; each of R 2 to R 4 and R 6 to R 8 independently represents a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; R 1 to R 8 are not to be bonded to each other to form a ring; each of X 1 and X 2 independently represents —O—, —CO—, —S—, —SO 2 —, or —NH—; and L 1 represents a divalent aliphatic group having 1 to 20 carbon atoms;

wherein each of R 11 , R 15 , R 21 and R 25 independently represents an alkyl group, an aryl group, or an alkoxy group; each of R 12 to R 14 , R 16 to R 18 , R 22 to R 24 , and R 26 to R 28 independently represents a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; R 11 to R 28 are not to be bonded to each other to form a ring; each of X 11 , X 12 , X 21 and X 22 independently represents —O—, —CO—, —S—, —SO 2 —, or —NH—; and L 2 represents a tetravalent aliphatic group having 1 to 20 carbon atoms.

5. The polyester film according to claim 4 , wherein both R 2 and R 6 in Formula (O-1) are hydrogen atoms.

6. The polyester film according to claim 4 , wherein each of R 1 , R 5 , R 11 , R 15 , R 21 and R 25 in Formulas (O-1) and (O-2) independently represents a secondary or tertiary alkyl group, or an aryl group.

7. The polyester film according to claim 4 , comprising the cyclic carbodiimide compound in an amount of 0.05% by mass to 5% by mass relative to 100% by mass of the polyester.

8. The polyester film according to claim 4 , wherein a component derived from carboxylic acid in the polyester is a component derived from an aromatic dibasic acid or its derivative for forming an ester.

9. The polyester film according to claim 4 which is biaxially oriented.

10. A solar cell module having a polyester film comprising a cyclic carbodiimide compound which is represented by the following Formula (O-1) or (O-2), and a polyester:

wherein each of R 1 and R 5 independently represents an alkyl group, an aryl group, or an alkoxy group; each of R 2 to R 4 and R 6 to R 8 independently represents a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; R 1 to R 8 are not to be bonded to each other to form a ring; each of X 1 and X 2 independently represents —O—, —CO—, —S—, —SO 2 —, or —NH—; and L 1 represents a divalent aliphatic group having 1 to 20 carbon atoms;

wherein each of R 11 , R 15 , R 21 and R 25 independently represents an alkyl group, an aryl group, or an alkoxy group; each of R 12 to R 14 , R 16 to R 18 , R 22 to R 24 , and R 26 to R 28 independently represents a hydrogen atom, an alkyl group, an aryl group, or an alkoxy group; R 11 to R 28 are not to be bonded to each other to form a ring; each of X 11 , X 12 , X 21 and X 22 independently represents —O—, —CO—, —S—, —SO 2 —, or —NH—; and L 2 represents a tetravalent aliphatic group having 1 to 20 carbon atoms.

11. The solar cell module according to claim 10 , having the polyester film as a back sheet of the solar cell module.

Assignees

• Fujifilm Corp

Inventors

• Sakurai Seiya
• Fukuda Makoto

Classifications

• C08K5/29

  Compounds containing {one or more} carbon-to-nitrogen double bonds · CPC title

• C07D285/00

  Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00 · CPC title

• C07D498/10

  Spiro-condensed systems · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• Y02E10/50

  Photovoltaic [PV] energy · CPC title