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Oligomer mixtures, their production and use as flame retardants and flame-retardant polyurethanes containing them

A technology of mixtures, oligomers, applied in the field of polyurethane foams and polyurethanes, to produce their fields, able to solve problems such as mixtures of oligomers not mentioned

Active Publication Date: 2019-02-01
LANXESS DEUTDCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The document does not mention oligomer mixtures

Method used

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  • Oligomer mixtures, their production and use as flame retardants and flame-retardant polyurethanes containing them
  • Oligomer mixtures, their production and use as flame retardants and flame-retardant polyurethanes containing them
  • Oligomer mixtures, their production and use as flame retardants and flame-retardant polyurethanes containing them

Examples

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Embodiment

[0151] Description of the general synthesis for oligomer mixtures (Synthesis Examples S1 to S5)

[0152] The phosphorus oxychloride in the amount (parts by weight) stated in Table 1 is charged into a reactor equipped with a stirrer, dropping funnel, reflux condenser and vacuum device. The temperature of phosphorus oxychloride is controlled to 10 to 20°C. Under a vacuum of 500 to 700 mbar, the amount of diethylene glycol indicated in Table 1 was added dropwise. Once the dropwise addition has ended, the pressure is further reduced to a final value of 5 to 15 mbar and the temperature is raised to 20 to 30°C. This gave an almost colorless liquid residue.

[0153] In another reactor with stirrer, dropping funnel and reflux condenser at 20 to 30° C., the amount of ethanol indicated in Table 1 was initially charged and mixed with the residue obtained above. Stirring of the mixture was continued at 20 to 30°C until the reaction was complete, then the mixture was neutralized by addi...

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Abstract

The invention relates to oligomer mixtures, their production and use as flame retardants and flame retardant polyurethanes comprising them. The present invention relates to oligomer mixtures comprising at least three poly(alkylene phosphates) of formula (I), wherein R 1 , R 2 , R 3 and R 4 Each independently of each other is a straight chain or a branched chain C 1 -C 8 ‑Alkyl moiety or linear or branched C 1 -C 4 ‑Alkoxyethyl moiety, A is linear, branched and / or cyclic C 4 -C 20 - Alkylene moieties or those as defined in the claims, n is an integer from 0 to 100, with the proviso that at least three poly(alkylene phosphates) of formula (I) differ from each other at least in the number n of repeating units , and the average number n of repeating units of at least three poly(alkylene phosphates) of formula (I) is greater than 1.10 and less than 2.00.

Description

technical field [0001] The present invention relates to novel, halogen-free poly(alkylene phosphate) oligomer mixtures and their use in flame retardants, especially polyurethanes, and to polyurethane foams and polyurethanes modified thereby, and methods for producing them. Background technique [0002] Polyurethanes are used as plastics in many industries such as furniture, mattresses, transport, electrical appliances, construction and technical insulation. In order to comply with the stringent flame retardancy requirements for materials especially in the fields of interior parts for automobiles, interior parts for railway vehicles and interior parts for aircraft, as well as flame retardancy requirements for thermal insulation of buildings, polyurethane generally requires Modified with flame retardants. Many different flame retardants are known and commercially available for this purpose. However, its application is often hampered by numerous problems related to performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/521C07F9/11C08L75/04C08L75/08C08L75/06C08G18/48C08G18/42
CPCC07F9/091C07F9/141C08G18/42C08G18/4825C08K5/0066C08K5/521C08K2201/014C08L75/06C08L75/08C08G2110/0008C08G2110/0083C08L75/04C08G18/48C08G79/04C08K5/52C09K21/12
Inventor 扬-格尔德·汉塞尔海科·特比
Owner LANXESS DEUTDCHLAND GMBH
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