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PU (polyurethane) curing agent intermediate for replacing TMP (trimethylolpropane)

A technology of intermediates and curing agents, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of high TMP price, high production cost of coatings and adhesives, and achieve the effect of low cost

Inactive Publication Date: 2015-06-24
FOSHAN MINGTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an intermediate for PU curing agent that replaces TMP, and the invention solves the problem of high production cost of coatings and adhesives due to the relatively high price of TMP

Method used

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  • PU (polyurethane) curing agent intermediate for replacing TMP (trimethylolpropane)

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Embodiment Construction

[0014] The present invention will be described in detail below with the best embodiment.

[0015] An intermediate for PU curing agent that replaces TMP, DC-03 is used as an intermediate for PU curing agent in the production of adhesives or coatings; that is, DC-03 is used instead of TMP as an intermediate for PU curing agent.

[0016] The molecular structure of the DC-03 is:

[0017]

[0018] The ingredients of DC-03 are phthalic anhydride (PA), glycerin (GLY) and monoacid Rt.

[0019] In the process of producing adhesives or coatings, DC-03 is used as the PU curing agent intermediate in the medium. The amount of DC-03 added is the same as that of TMC, and the production process is exactly the same.

[0020] Adopt the existing technology to use TMP as the intermediate of PU curing agent to produce coatings and adhesives, and then use DC-03 instead of TMP to produce coatings and adhesives. The technical indicators are the same and meet the national standards.

[0021] Nat...

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Abstract

The invention discloses a PU (polyurethane) curing agent intermediate for replacing TMP (trimethylolpropane) and relates to curing agents, in particular to replacement products for TMP curing agents. In production of adhesives or paints, the TMP is replaced by DC-03 to serve as the PU curing agent intermediate. By the PU curing agent intermediate for replacing the TMP, the problem of high production cost of adhesives and paints due to high price of the TMP is solved.

Description

technical field [0001] The invention relates to a curing agent, in particular to an alternative product of the TMP curing agent. Background technique [0002] Trimethylolpropane (TMP for short) chemical name is 2-ethyl-2-hydroxymethyl-1,3-propanediol, also known as trimethylolpropane, 2,2-dimethylolpropane, English name: Trimethylolpropane , English abbreviation: TMP, chemical formula: CH3CH2C(CH2OH)3. [0003] TPM molecular structure: [0004] The appearance of TPM is white crystal or powder, easily soluble in water, ethanol, propanol, glycerin and dimethylformamide, partially soluble in acetone, methyl ethyl ketone, cyclohexanone and ethyl acetate, slightly soluble in carbon tetrachloride and ether And chloroform, insoluble in aliphatic and aromatic hydrocarbons, hygroscopic, its hygroscopicity is about 50% of glycerin. [0005] There are three typical methylol groups on the molecule of trimethylolpropane, so it has the properties of polyols similar to glycerin, and c...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09J175/04C08G18/32
CPCC09D175/04C08G18/3215C09J175/04
Inventor 杨吉顺孟繁荣
Owner FOSHAN MINGTAI CHEM