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The synthetic method of modified piperylene resin

A synthesis method and technology of pentadiene, applied in the direction of adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve the problems of reduced adhesive performance, poor compatibility, poor compatibility, etc., and meet the requirements of use. , Good compatibility, high viscosity increasing effect

Active Publication Date: 2017-11-10
FUSHUN YIKESI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When used in the field of adhesives, the molecular weight is relatively large, and the molecular weight distribution is wide so that the compatibility is poor, and the compatibility with other formulations in the adhesive such as: SIS, SBS, EVA, etc. is poor, and the performance of the adhesive is greatly reduced.
When used as a rubber tackifier, etc., the molecular weight is too large to make it difficult to overflow the surface of the rubber, so the effect of rubber tackifying is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1, the synthetic method of described modified piperylene resin operates as follows:

[0044] (1) Preparation of raw materials for copolymerization reaction

[0045] The raw material monomers piperylene, 2-methyl-1-butene, and α-pinene are distilled to remove polymerization inhibitors and autopolymers, and the distilled raw material monomers are added to molecular sieves and sealed at low temperature for future use;

[0046] piperylene, C 5 Monoolefins and terpenes are mixed in a weight ratio of 1:0.1:0.4, and then added to a constant pressure dropping funnel with a syringe;

[0047] (2) Preparation of solvent

[0048] First, n-pentane is distilled to remove polymerization inhibitors and self-polymers, then molecular sieves are added and sealed and stored at low temperature for future use;

[0049] (3) Preparation of catalyst

[0050] In a three-port glass reactor equipped with an electromagnetic heating stirrer, a thermometer and nitrogen protection, vacuum...

Embodiment 2

[0059] Embodiment 2 adopts the same technical means and method steps as in Embodiment 1, and the difference therein is:

[0060] Prepare 30 grams of copolymerization reaction raw materials, that is, mix piperylene, 2-methyl-2-butene, and limonene in a weight ratio of 1:0.5:0.8, and use aluminum trichloride accounting for 1.2% of the reaction raw material liquid quality as a catalyst. Then add n-hexane which accounts for 50% of the mass of the reaction raw material liquid as a solvent, and obtain a resin through copolymerization with a yield of 88.0%.

Embodiment 3

[0061] Embodiment 3 adopts the same technical means and method steps as Embodiment 1 and Embodiment 2, and the difference therein is:

[0062] Prepare 30 grams of raw materials for copolymerization, that is, mix piperylene, 2-pentene, and α-pinene in a weight ratio of 1:0.6:0.8, use boron trifluoride accounting for 4% of the mass of the reaction raw material liquid as a catalyst, and then add The reaction raw material liquid mass 20% n-hexane is used as a solvent, and the resin is obtained through copolymerization, and the yield is 78.3%.

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Abstract

The synthesis method of the modified piperylene resin of the present invention is to use piperylene, C5 monoolefin, and terpene as raw materials for the copolymerization reaction, thereby preparing a resin with a smaller molecular weight, a higher softening point and a lower bromine value petroleum resin. The synthetic method of modified piperylene resin comprises, by weight ratio 1:(0.1-0.7):(0.4-1.4) feeding piperylene, C5 monoolefin, terpene to make copolymerization reaction raw material; Under the condition of using inert aliphatic hydrocarbon as solvent, cationic polymerization reaction is carried out under the temperature of 30-70 ℃ and oxygen-free environment to synthesize and prepare the resin.

Description

technical field [0001] The present invention relates to a kind of method of producing and preparing piperylene petroleum resin, specifically relate to piperylene, C 5 The invention discloses a method for synthesizing petroleum resin with monoolefin and terpene as copolymerization raw materials, belonging to the technical field of polymer materials and production automation. Background technique [0002] Piperylene petroleum resin aliphatic C 5 Petroleum resin, its number average molecular weight is in the range of 300-3000. The main chain link of this type of petroleum resin is aliphatic hydrocarbon structure, which has the characteristics of low acid value, good miscibility, good adhesion, water resistance, ethanol resistance and chemical resistance. [0003] with cycloaliphatic C 5 Petroleum resin and C 5 and C 9 Compared with the copolymer resins of distillates, piperylene petroleum resin has better tackiness, thermal stability and lighter color, so it has better app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F240/00C09J157/02
Inventor 王浩苏坤赵富春王龙庆罗恒志
Owner FUSHUN YIKESI NEW MATERIAL