Phosphorus-containing flame retardant, preparation method thereof, resin composition comprising the phosphorus-containing flame retardant and article made therefrom

Patent metadata

Field	Value
Publication number	US-10865221-B2
Application number	US-201815977127-A
Country	US
Kind code	B2
Filing date	May 11, 2018
Priority date	Mar 27, 2018
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A phosphorus-containing flame retardant, a preparation method thereof, a resin composition comprising the phosphorus-containing flame retardant and an article made therefrom are disclosed. The phosphorus-containing flame retardant is characterized by having the advantages of high phosphorus content, high resin compatibility, not increasing gel time of varnish and low water absorption rate, and is therefore suitable for use as a flame retardant of various resin materials.

First claim

What is claimed is:

1. A phosphorus-containing flame retardant of Formula (1):

wherein X represents

Ar represents an aromatic group; and
Y and Z individually represent

or hydrogen, and at least one of Y and Z is not hydrogen.

2. The phosphorus-containing flame retardant of claim 1 , wherein Ar represents benzene, naphthalene or biphenyl.

3. The phosphorus-containing flame retardant of claim 1 , which comprises a structure of Formula (1-1), Formula (1-2) or Formula (1-3):

4. The phosphorus-containing flame retardant of claim 1 , which comprises a structure of Formula (1-4):

5. The phosphorus-containing flame retardant of claim 1 , which comprises a structure of any one of Formula (2) to Formula (11):

6. The phosphorus-containing flame retardant of claim 1 , having a phosphorus content of between 10% and 15%.

7. The phosphorus-containing flame retardant of claim 1 , having a water absorption rate of less than 0.20%.

8. A method of preparing the phosphorus-containing flame retardant of claim 1 , comprising reacting a phosphorus-containing hydroxyl aromatic compound and a phosphorus-containing halide in the presence of a catalyst.

9. The method of claim 8 , wherein the phosphorus-containing hydroxyl aromatic compound comprises any one of the following structures:

wherein the phosphorus-containing halide comprises a structure of Formula (14) or Formula (15):

wherein the catalyst comprises an alkaline compound and a Lewis acid; and
wherein the phosphorus-containing hydroxyl aromatic compound and the phosphorus-containing halide have a molar ratio of between 1:1 and 1:5.

10. A resin composition comprising a resin and at least one phosphorus-containing flame retardant of claim 1 .

11. The resin composition of claim 10 , further comprising a property modifier.

12. An article made from the resin composition of claim 10 , comprising a resin film, a resin-coated copper, a prepreg, a laminate or a printed circuit board.

Assignees

• Elite Material Co Ltd

Inventors

• Chang Shu-Hao
• Hu Zhilong
• Hsu Ching-Hsien

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C09D201/00

  Coating compositions based on unspecified macromolecular compounds · CPC title

• C07F9/657181

  the ring phosphorus atom and, at least, one ring oxygen atom being part of a (thio)phosphonic acid derivative · CPC title

• B32B27/18

  characterised by the use of special additives · CPC title

• B32B33/00

  Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class · CPC title