Polyisocyanurate foam and preparation method therefor

Patent metadata

Field	Value
Publication number	US-2016208065-A1
Application number	US-201415025544-A
Country	US
Kind code	A1
Filing date	Oct 1, 2014
Priority date	Oct 4, 2013
Publication date	Jul 21, 2016
Grant date	—

Abstract

Provided is a polyisocyanurate foam formed by polymerizing and foaming a composition comprising: a polyol-based compound, an isocyanate-based compound and a solid flame retardant, wherein a viscosity of the polyol-based compound is 1,000 cps to 100,000 cps at 25° C. In addition, provided is a preparation method for a polyisocyanurate foam, comprising: (a) mixing and stirring a polyol-based compound having a viscosity of 1,000 cps to 100,000 cps at 25° C. and a solid flame retardant; and (b) mixing and stirring the mixture obtained from step (a) with an isocyanate-based compound to polymerize and foam polyisocyanurate.

First claim

1 . A polyisocyanurate foam formed by polymerizing and foaming a composition comprising: a polyol-based compound, an isocyanate-based compound, and a solid flame retardant, wherein a viscosity of the polyol-based compound is 1,000 cps to 100,000 cps at 25° C.

2 . The polyisocyanurate foam of claim 1 , wherein the solid flame retardant has an average particle diameter of 5 μm to 100 μm.

3 . The polyisocyanurate foam of claim 1 , wherein the solid flame retardant is at least one selected from the group consisting of a phosphorus-based flame retardant, a metal hydrate flame retardant, a halogen-based flame retardant, a flame-retardant aid and combinations thereof.

4 . The polyisocyanurate foam of claim 1 , wherein the solid flame retardant is at least one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, and combinations thereof.

5 . The polyisocyanurate foam of claim 1 , wherein the composition includes 110 parts by weight to 220 parts by weight of the isocyanate-based compound and 5 parts by weight to 40 parts by weight of the solid flame retardant, relative to 100 parts by weight of the polyol-based compound.

6 . The polyisocyanurate foam of claim 1 , wherein the viscosity of the polyol-based compound is 2,000 cps to 30,000 cps at 25° C.

7 . The polyisocyanurate foam of claim 1 , wherein a foam cell formed in the polyisocyanurate foam has an average diameter of 50 μm to 290 μm.

8 . The polyisocyanurate foam of claim 1 , wherein a thermal conductivity of the polyisocyanurate foam is 0.023 W/mk or less.

9 . The polyisocyanurate foam of claim 1 , wherein the polyisocyanurate foam further includes at least one of a catalyst, a surfactant and a foaming agent.

10 . The polyisocyanurate foam of claim 1 , wherein the composition does not include a nucleating agent.

11 . A preparation method for a polyisocyanurate foam, comprising:
(a) mixing and stirring a polyol-based compound having a viscosity of 1,000 cps to 100,000 cps at 25° C. and a solid flame retardant; and (b) polymerizing and foaming polyisocyanurate by mixing and stirring the mixture obtained from step (a) with an isocyanate-based compound.

12 . The preparation method of claim 11 , wherein step (b) comprises: mixing and stirring the mixture obtained from step (a) with at least one of a surfactant, a catalyst and a foaming agent, and then mixing and stirring the mixture obtained from step (a) with an isocyanate-based compound to polymerize and foam polyisocyanurate.

Assignees

• Lg Hausys Ltd

Inventors

• Kim Ji-Mun
• Lee Eung-Kee
• Choi Chul-June
• Kim Myeong-Hee
• Ji Seung-Wook
• Park Gun-Pyo

Classifications

• C08J9/0066 Primary

  Use of inorganic compounding ingredients · CPC title

• C08J2203/14

  Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons · CPC title

• C08J9/141

  Hydrocarbons · CPC title

• C08G18/48

  Polyethers · CPC title

• C08J2201/022

  premixing or pre-blending a part of the components of a foamable composition, e.g. premixing the polyol with the blowing agent, surfactant and catalyst and only adding the isocyanate at the time of foaming · CPC title