Preparation method of fire retardant high activity polymer polyether polyol and method for preparing high elastic resilience fire retardant golyurethane soft foam material therefrom

A technology of polyether polyol and high-activity polyether, which is applied in the preparation of flame-retardant high-activity polymer polyether polyol and the preparation of high-resilience flame-retardant polyurethane flexible foam materials, which can solve thermal instability, high price, and hair loss. Foaming equipment corrosion and other problems, to achieve the effect of easy foaming, low cost, simple preparation process

Inactive Publication Date: 2005-05-25
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, homopolymers and copolymers of vinyl chloride and vinylidene chloride are usually thermally unstable, and toxic HCl gas is released during the foaming process, which is corrosive to foaming equipment; Japanese patent Jpn.Kokai.Tokyo.JP.0959 , The flame retardant used in the flame-retardant polymer polyol disclosed in 341 is polyvinyl chloride, which is also thermally unstable; Polyol, the polyurethane foam made of this polymer polyol has certain flame retardancy, but tribromostyrene is difficult to synthesize, the price is high, and it is difficult to obtain

Method used

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  • Preparation method of fire retardant high activity polymer polyether polyol and method for preparing high elastic resilience fire retardant golyurethane soft foam material therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Embodiment 1: at 40 ℃, polyether polyol N330, 960 kilograms, 17.4 kilograms of methyl ethyl ketone oxime, 34.8 kilograms of toluene diisocyanate and triethylamine, 0.12 kilograms are added in the airtight reactor that has stirrer, thermometer, make The temperature was raised to 80°C, and after a constant temperature reaction at this temperature for 5 hours, 12 kg of ethylenediamine was added, and then the temperature was raised to 118°C, and the reaction was carried out for 1 hour. A partially aminated diisocyanate-modified polyether polyol is obtained.

Embodiment 2

[0078] Embodiment 2: the general-purpose highly active polyether polyol N330, 550 kilograms, partially aminated diisocyanate modified polyether polyol, 61 kilograms, 197 kilograms of formaldehyde, 123 kilograms of urea, 61 kilograms of melamine, hexamethylene Add 5 kg of tetramine and 120 kg of water into a closed 3,000-liter reactor with a stirrer and a thermometer, raise the temperature to 80°C, react at this temperature for 4 hours, and vacuum dry at 92°C for 4 hours to remove it. Volatile components, add high activity polyether polyol N330, 580 kg, obtain flame retardant high activity polymer polyether polyol, see the synthesis of flame retardant high activity polymer polyether polyol, foaming formula and flame retardant high Resilience polyurethane foam performance comparison table embodiment 2.

Embodiment 3

[0079] Embodiment 3: the general-purpose highly reactive polyether polyol N330, 550 kilograms, partially aminated diisocyanate modified polyether polyol, 61 kilograms, 197 kilograms of formaldehyde, 123 kilograms of urea, 61 kilograms of melamine, hexamethylene Add 5 kg of tetramine and 120 kg of water into a closed 3,000-liter reactor with a stirrer and a thermometer, raise the temperature to 80°C, react at this temperature for 4 hours, and vacuum dry at 92°C for 4 hours to remove it. Volatile components, add high activity polyether polyol N330, 380 kg, obtain flame retardant high activity polymer polyether polyol, see synthesis of flame retardant high activity polymer polyether polyol, foaming formula and flame retardant high Resilience polyurethane foam performance comparison table embodiment 3.

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Abstract

A flame-retarding high-activity polyether polyol is a stable polymer colloid dispersed system composed of the continuous phase (high-activity polyetherpolyol) and the dispersed phase (surface grafted partially aminated diisocyanate modified polyether polyol nanoparticles). It is prepared through the reaction of formaldehyde-urea-cyanuamide-hexamethine tetramine in high-activity polyether polyol under existance of said dispersed system and drying. A high-resilience flame-retarding soft polyurethane foam is prepared from said flame-retarding high-activity polyether polyol and diisocyanate through reaction in cold mould under existance of catalyst, cross-linking agent and foaming agent and free foaming.

Description

technical field [0001] The invention belongs to the field of polymer polyether polyol and its preparation and application, and in particular relates to a method for preparing a flame-retardant high-activity polymer polyether polyol and a method for preparing a high-resilience flame-retardant polyurethane flexible foam material. Background technique [0002] Polyurethane foam is a high polymer with unique properties and versatile uses. It is based on polyether polyol and diisocyanate, mixed with a small amount of water, silicone surfactant, foaming agent, and formed under the combined action of organotin and tertiary amine catalysts. It can be used to make hard , semi-rigid and soft polyurethane foam, mainly used as shock-absorbing materials for seat cushions, cushions, interior parts and motorcycle saddles, etc., and can also be used to make sofas, mattresses, decorative materials and other civil uses product. [0003] Polymer polyether polyols are usually the product of f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/76C08G65/04
Inventor 顾尧李辉逄海萍
Owner QINGDAO UNIV OF SCI & TECH
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