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
View PDF5 Cites 12 Cited by
- 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
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.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
| Property | Measurement | Unit |
|---|---|---|
| molecular weight distribution | aaaaa | aaaaa |
| molecular weight distribution | aaaaa | aaaaa |
| molecular weight distribution | aaaaa | aaaaa |
Login to view more
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more 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
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap