Flame retardant compound including host-guest complex

Patent metadata

Field	Value
Publication number	US-10538653-B2
Application number	US-201916553992-A
Country	US
Kind code	B2
Filing date	Aug 28, 2019
Priority date	Nov 18, 2015
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A flame retardant compound is provided. The flame retardant compound includes a polymer base resin, a carbonific host compound, and a guest compound including at least one atom of a transition metal. The carbonific host compound and the guest compound form a host-guest complex, and the host-guest complex acts to inhibit at least one of smoke release and smoke formation when exposed to heat. The host-guest complex is distributed within the polymer base resin. An intumescent flame retardant compound is also provided. The intumescent flame retardant compound includes a base resin, an acid donor, a spumific agent, a cyclodextrin host compound, and a guest compound including at least one atom of molybdenum. The cyclodextrin host compound and the guest compound form a host-guest complex. The acid donor, carbonific host compound, and spumific agent react when exposed to a temperature above 280° C. to form a foam.

First claim

What is claimed:

1. An intumescent flame retardant compound comprising:
a base resin;
an acid donor;
a spumific agent;
a cyclodextrin host compound; and
a guest compound including at least one atom of molybdenum, wherein the cyclodextrin host compound and the guest compound form a host-guest complex, wherein the acid donor reacts with the carbonific host compound to produce a char when exposed to a temperature above 280° C., wherein the spumific agent decomposes to form a blowing gas when exposed to a temperature above 280° C., and wherein the blowing gas and the char form a foam.

2. The intumescent flame retardant compound of claim 1 , wherein the cyclodextrin host compound is selected from the group consisting of alpha, beta, gamma, and larger cyclodextrin and combinations thereof.

3. The intumescent flame retardant compound of claim 2 , wherein the molybdenum-containing compound is selected from the group consisting of molybdenum trioxide, ammonium octamolybdate, molybdenum acetate, calcium molydate, zinc, molybdate, molybdenum dialkyldithiocarbamate, and combinations thereof.

4. The intumescent flame retardant compound of claim 3 , wherein the base resin includes a polyolefin homopolymer or copolymer.

5. The intumescent flame retardant compound of claim 1 , wherein the intumescent flame retardant compound is a component of a jacket that surrounds an electrical communication component or an optical communication component.

6. The intumescent flame retardant compound of claim 5 , wherein the jacket further comprises at least one polymer additive selected from the group consisting of mineral fillers, antioxidants, UV additives, processing modifiers, compatibilizers, and combinations thereof.

Assignees

• Corning Optical Communications LLC

Inventors

• Jiang Dayue
• Langfeld Kirsten
• Williamson Brandon Robert

Classifications

• C08K5/21

  Urea; Derivatives thereof, e.g. biuret · CPC title

• C08K3/24

  Acids; Salts thereof {(C08K3/16 takes precedence)} · CPC title

• H01B3/441

  from alkenes · CPC title

• H01B3/302

  Polyurethanes or polythiourethanes; Polyurea or polythiourea · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title