Flame-retardant resin composition and molded resin object

Patent metadata

Field	Value
Publication number	US-10669398-B2
Application number	US-201615554489-A
Country	US
Kind code	B2
Filing date	Mar 8, 2016
Priority date	Mar 10, 2015
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

The present invention is a flame-retardant resin composition comprising a cycloolefin-based polymer and a halogen-containing flame retardant selected from a group consisting of a halogenated bisimide compound and a halogen-containing styrene-based resin, and may be comprising a halogen-active species scavenger, wherein a content of the halogen-containing flame retardant is 10 to 80 parts by weight based on 100 parts by weight of the cycloolefin-based polymer, and a content of the halogen-active species scavenger is less than 25 parts by weight based on 100 parts by weight of the halogen-containing flame retardant, and a resin formed article. One aspect of the invention provides a flame-retardant resin composition having excellent flame retardance, low dielectric constant and low dielectric loss tangent, and a resin formed article produced by forming this flame-retardant resin composition.

First claim

The invention claimed is:

1. A flame-retardant resin composition comprising a cycloolefin-based polymer and a halogen-containing flame retardant selected from a group consisting of a halogenated bisimide compound and a halogen-containing styrene-based resin, and optionally comprising a halogen-active species scavenger,
wherein the cycloolefin-based polymer is a hydrogenated product of a crystalline cycloolefin-based ring-opening polymer,
the halogen-active species scavenger is an inorganic halogen-active species scavenger,
a content of the halogen-containing flame retardant is 10 to 80 parts by weight based on 100 parts by weight of the hydrogenated product of the crystalline cycloolefin-based polymer, and
a content of the inorganic halogen-active species scavenger is less than 25 parts by weight based on 100 parts by weight of the halogen-containing flame retardant.

2. The flame-retardant resin composition according to claim 1 ,
wherein a dielectric constant is 3.0 or lower, and a dielectric loss tangent is lower than 5.0×10 −3 , at a frequency of 1 GHz.

3. The flame-retardant resin composition according to claim 1 ,
wherein a dielectric constant is 3.0 or lower, and a dielectric loss tangent is lower than 1.0×10 −3 , at a frequency of 1 GHz.

4. A resin formed article produced by forming the flame-retardant resin composition according to claim 1 .

5. The flame-retardant resin composition according to claim 1 , wherein a ratio of a racemo diads in the hydrogenated product of the crystalline cycloolefin-based ring-opening polymer is 88 to 99%.

Assignees

• Zeon Corp

Inventors

• Kato Ayako
• Miyazawa Shinsuke

Classifications

• C08K5/3415 Primary

  Five-membered rings · CPC title

• C08L2201/02

  Flame or fire retardant/resistant · CPC title

• C08K3/22

  of metals · CPC title

• C08K2201/019

  the composition being defined by the absence of a certain additive · CPC title

• C08L27/18

  Homopolymers or copolymers or tetrafluoroethene · CPC title