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Method and formula for forming hyper branched polymer

A branched polymer and polymer technology are applied in the formulation of hyperbranched polymers and the field of formation thereof, which can solve the problem of ineffective control of molecular structure and molecular weight, increase of preparation process steps and complexity, and hyperbranched polymerization. The problem of low product yield, etc., achieves the effects of excellent processing performance, reduced production cost, and improved brittleness

Active Publication Date: 2010-03-03
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because IFIRP needs to use a combinatorial initiator (initiator) and monomer (monomer) combined structure (called initiating monomer, inimer) to carry out the synthesis of hyperbranched polymers, the type and type of its use are all restricted. Quite limited, and it has no effective control over molecular structure and molecular weight, and the yield of synthesized hyperbranched polymers is not high, and the scope of application will be limited
If it is necessary to effectively promote the synthesis reaction and controllability of hyperbranched polymers, it is necessary to add and make good use of chain transfer agents and coincidence inhibitors that can be combined to trigger the reaction of monomers. This rule adds to the complexity of the preparation process. steps and complexity

Method used

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  • Method and formula for forming hyper branched polymer
  • Method and formula for forming hyper branched polymer
  • Method and formula for forming hyper branched polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: STOBA (1:1)-GBL-20wt%-90°C-6H

[0066] STOBA (self-terminated oligomer with hyper-branched architecture) refers to self-terminated hyper-branched oligomer. STOBA(1:1)-GBL-20wt%-90°C-6H means that the molar ratio of the reactant BMI to BTA is 1:1, the solid content is about 20wt.%, the solvent is the GBL system, and the reaction is at 90°C for 6 hours ; The program steps and reaction conditions of its preparation are listed as follows:

[0067] (1) Take about 18 grams of bismaleimide (4,4'-Bismaleimidodi-phenylmethane) monomer into a 250ml round-bottomed three-neck bottle, add about 60 grams of GBL solvent, and heat to 90 ° C to fully stir , so that the bismaleimide monomer can be completely dissolved in the GBL solvent.

[0068] (2) Weigh about 7 grams of BTA powder, add about 40 grams of GBL solvent, and fully stir with a magnet, so that BTA can be evenly dispersed in the GBL solvent.

[0069] (3) Divide the BTA-GBL milky solution into 8 equal parts of th...

Embodiment 2

[0072] Example 2: STOBA (1:1)-NMP-20wt%-70°C-6H

[0073] STOBA(1:1)-NMP-20wt%-70°C-6H means that the molar ratio of the reactant BMI to BTA is 1:1, the solid content is about 20wt.%, the solvent is NMP system, and the reaction is at 70°C for 6 hours ; The program steps and reaction conditions of its preparation are listed as follows:

[0074] (1) Take about 18 grams of bismaleimide (4,4'-Bismaleimidodi-phenylmethane) monomer and put it into a 250ml round-bottomed three-neck bottle, add about 60 grams of NMP solvent, and heat to 70°C and stir thoroughly , so that the bismaleimide monomer can be completely dissolved in the NMP solvent.

[0075] (2) Weigh about 7 grams of BTA powder, add about 40 grams of NMP solvent, and fully stir with a magnet, so that BTA can be evenly dispersed in the NMP solvent.

[0076] (3) Divide the BTA-NMP emulsion solution into 8 equal parts to add the material, add the material every 15 minutes, and gradually add it to the BMI-NMP solution at 70°C ...

Embodiment 3

[0079] Example 3: STOBA (1:1)-DMF-20wt%-40°C-20H

[0080] STOBA(1:1)-NMP-20wt%-40°C-6H means that the molar ratio of the reactant BMI to BTA is 1:1, the solid content is about 20wt.%, the solvent is DMF system, and the reaction is at 40°C for 20 hours ; The program steps and reaction conditions of its preparation are listed as follows:

[0081] (1) Put about 18 grams of bismaleimide (4,4'-Bismaleimidodi-phenylmethane) monomer into a 250ml round-bottomed three-neck bottle, add about 60 grams of DMF solvent, and heat to 40°C and stir thoroughly , so that the bismaleimide monomer can be completely dissolved in the DMF solvent.

[0082] (2) Weigh about 7 grams of BTA powder, add about 40 grams of DMF solvent, and fully stir with a magnet, so that BTA can be evenly dispersed in DMF solvent.

[0083] (3) Divide the BTA-DMF emulsion solution into 8 equal parts of the additive, add the material once every 15 minutes, and gradually add it to the BMI-DMF solution at 40°C in batches an...

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Abstract

The invention provides a method and a formula for forming a hyper branched polymer. The method comprises the following steps of: adding a bismaleimide and a barbituric acid into a Bronsted base solution, reacting the mixture at 20 to 100 DEG C to form the hyper branched polymer. The formula can be further added with a monomaleimide monomer and / or a bismaleimide monomer to adjust the properties ofthe hyper branched polymer.

Description

technical field [0001] The present invention relates to a kind of hyper branched polymers (hyper branched polymers), more particularly to the formula of hyper branched polymers and its forming method. Background technique [0002] Generally speaking, a three-dimensional dendritic polymer (dendritech polymer) is a polymer with a highly branched or dendritic structure, and its solubility will be higher than that of a linear polymer with a similar structure. The reason is that the polymer is branched. The molecular packing is loose and the free volume is larger, which reduces the entanglement between molecular chains. Polymers can be divided into two forms according to their branched structure: [0003] (1) Dendrimers: The synthesis method can be divided into the synthesis and expansion of the core part layer by layer, called Divergent approaches; another method is to synthesize the branch parts first, and then connect them symmetrically to the core part On, called Convergent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F22/40C08F2/38C08F2/06
Inventor 潘金平王宗雄
Owner IND TECH RES INST
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