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High functionality amine compounds and uses therefor

A compound and polyol compound technology, applied in the field of amine compounds, can solve the problems of limiting the cross-sectional thickness of molded parts, poor mechanical properties, carbonization, etc.

Active Publication Date: 2010-03-17
HUNTSMAN PETROCHEMICAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, higher exotherm temperatures limit the cross-sectional thickness of formable parts due to thermal degradation in thicker sections
This thermal degradation may manifest as charring or result in poor mechanical properties

Method used

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  • High functionality amine compounds and uses therefor
  • High functionality amine compounds and uses therefor
  • High functionality amine compounds and uses therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 - Epoxy curing using an amine based on pentaerythritol alkoxylated with 8.5 moles of propylene oxide

[0053] According to a web lab analysis of such amines, the AHEW of the amine is about 85.9 grams per amine-hydrogen equivalent. The AHF for the epoxy-cured amine is 8.

[0054] By mixing 89.11 parts of the product of Example 1 and 190.89 parts of epoxy resin-liquid bisphenol A-based epoxy resin (epoxy equivalent weight is 184), and baking at a temperature of 80° C. for 3 hours in a glass mold and then The cast was baked at 125°C for 2 hours to form an unfilled casting with a nominal thickness of one-eighth of an inch. The polymer had a Tg of 98.6°C as measured by DSC (differential scanning calorimeter) at a heating rate of 20°C / min. Mechanical testing revealed a flexural strength of 20,600 psi, a tensile strength of 10,200 psi, and a tensile modulus of 446,000 psi.

Embodiment 2

[0055] Example 2 - Epoxy curing using a pentaerythritol based amine alkoxylated with 8.5 moles of propylene oxide followed by 5 moles of butylene oxide

[0056] Based on wet laboratory analysis of such amines, the AHEW of the amine is about 126 grams per amine-hydrogen equivalent. The AHF for the epoxy-cured amine is 8.

[0057] By mixing 106.76 parts of this amine and 173.24 parts of epoxy resin-liquid bisphenol A-based epoxy resin (epoxy equivalent weight is 184) according to the stoichiometric amount of 1:1, and baking at a temperature of 110 ° C for 2 hours and Casting was followed by a bake at 125°C for 2 hours to form an unfilled casting with a nominal thickness of one-eighth of an inch. The glass transition temperature (Tg) of the polymer was 64°C when measured with DSC (differential scanning calorimeter) at a heating rate of 20°C / min.

[0058] In contrast, when used at a 1:1 stoichiometric level of 56 parts When D-400 amine (the AHEW of this amine is 115 and AHF is...

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Abstract

In another exemplary embodiment, an amine functional curing agent has an Amine Hydrogen Functionality (AHF) of at least 7 and an Amine-Hydrogen Equivalent Weight (AHEW) of at least about 50.

Description

technical field [0001] The present disclosure is primarily concerned with amine compounds as curing agents. Background technique [0002] Commonly used manufacturing processes associated with the production of epoxy resins include filament winding, pultrusion, injection molding, resin transfer molding (RTM), vacuum assisted RTM (VARTM), and wet lay-up or vacuum bagging techniques. [0003] Polyoxyalkylene amines (sometimes called polyether amines) are effective curing agents in epoxy systems used to improve flexibility and work time in the manufacture of fiber-reinforced composites. "Working time" here means the time required from when the active ingredients of the epoxy resin are first mixed with each other until the mixture is no longer suitable for processing. During working hours, the resin or resin-containing substance is in a pourable, flexible, pliable or other state suitable for molding. [0004] such as those based on diols and triols, and include for example Lo...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08G65/48
CPCC07C217/08C08G18/5024C08G2650/50C08G59/504C08F283/006C08F283/10C08F283/06C08G65/2609C08L63/00C08L71/02C08F283/00C08G65/33303C08L2666/22
Inventor B·L·伯顿T·L·雷肯
Owner HUNTSMAN PETROCHEMICAL LLC
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