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Non-isocyanate organosilicon-polyurethane block copolymer and synthesis method thereof

A non-isocyanate, block copolymer technology, applied in the field of non-isocyanate silicone-polyurethane block copolymer and its synthesis, can solve problems such as the introduction of target functional groups that limit polymerization efficiency, and achieve simple and efficient synthesis methods and chemical resistance. And the effect of excellent anti-penetration performance and strong practicability

Inactive Publication Date: 2018-01-09
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Huang Yaocheng et al.'s research on "Synthesis and Application of Non-isocyanate Polyurethane" used cyclocarbonate compounds and primary amines to prepare polyurethanes, but the reaction generally used two-membered cyclocarbonates and dibasic primary amines. The short chain of primary amines The structure greatly limits the polymerization efficiency and the introduction of target functional groups in high molecular weight polymers

Method used

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  • Non-isocyanate organosilicon-polyurethane block copolymer and synthesis method thereof
  • Non-isocyanate organosilicon-polyurethane block copolymer and synthesis method thereof
  • Non-isocyanate organosilicon-polyurethane block copolymer and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] α,ω-Aminoalkylpolysiloxane 10.0g with cyclocarbonate 1.2g (guaranteed an equimolar ratio of amino group to cyclocarbonate), mixed uniformly in a dioxane solvent, reacted at room temperature for 6h, and then heated to remove the solvent to obtain a non-isocyanate silicone-polyurethane block copolymer.

[0045] GPC got M n for 8315, M w It is 14634, and the molecular weight distribution index is 1.76.

Embodiment 2

[0047] The procedure described in Example 1 was repeated except that the α,ω-aminoalkylpolysiloxane was

[0048] GPC got M n for 7968, M w It is 15697, and the molecular weight distribution index is 1.97.

Embodiment 3

[0050] The procedure described in Example 1 was repeated except that the α,ω-aminoalkylpolysiloxane was

[0051] GPC got M n for 9324, M w It is 17156, and the molecular weight distribution index is 1.84.

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Abstract

The invention relates to a non-isocyanate organosilicon-polyurethane block copolymer and a synthesis method thereof, in particular to an addition polymerization reaction of alpha, omega-aminoalkylpolysiloxane and cyclic carbonate in a solvent. The non-isocyanate organosilicon-polyurethane block copolymer prepared by the invention avoids the use of diisocyanate as a toxic raw material, the production process and the product are safe and environmentally friendly, and a hydroxyl group on a beta carbon atom in a urethane segment and a carbonyl group form an intramolecular hydrogen bond, so that the copolymer has strong molecular force, and thus the hydrolysis resistance, chemical resistance and anti-permeability of the copolymer are more excellent; the block copolymer molecular structure can be designed according to the polysiloxane chain length and the cyclic carbonate structure so as to meet the application of the copolymer in the fields of antifouling flash coatings, leather, textiles,papermaking, fiber processing, medical devices and the like.

Description

technical field [0001] The invention belongs to the technical field of organosilicon polymers, in particular to a non-isocyanate organosilicon-polyurethane block copolymer and a synthesis method thereof. Background technique [0002] Polysiloxane-polyurethane block copolymers are a class of promising polymer materials. From the perspective of molecular segment structure, the polysiloxane segment can provide excellent thermal stability, dielectric properties, flexibility, water resistance, air permeability and biocompatibility; the polyurethane segment can provide good mechanical properties, abrasion resistance etc. Therefore, this material not only overcomes the shortcomings of polysiloxane's poor mechanical properties, but also makes up for the shortcomings of polyurethane's poor weather resistance, and has good water resistance, low temperature flexibility, surface accumulation, dielectric properties and excellent biophase properties. Capacitive, it has great application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G71/04
Inventor 刘月涛朱丹孙佳文高传慧王传兴武玉民
Owner QINGDAO UNIV OF SCI & TECH
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