Silicon phosphonate containing fire rotardant and its synthesis method

A technology of silicon phosphonate and synthesis method, which is applied in textiles, papermaking, fiber treatment, etc., and can solve problems such as hard hand feeling, large loss of fabric strength, environmental and human health hazards, etc.
CN1556273AActive Publication Date: 2004-12-22ZHEJIANG HENGYI GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG HENGYI GRP CO LTD
Publication Date
2004-12-22

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Abstract

A Si-contained phosphonate as fire retarding agent used for fabrics is prepared through proportionally mixing methylvinyl dichlorosilane with solvent, stirring, adding dimethyl phosphite and catalyst, stirring under protection of N2, heating, reflux, collecting fraction, cooling, adding water, stirring, oil-water separating, and distilling water phase to obtain fire retarding agent SP.
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Description

technical field

[0001] The invention belongs to the field of flame retardant synthesis. Specifically, it is a silicon-containing phosphonate flame retardant and a synthesis method thereof. Background technique

[0002] In permanent flame retardant finishing agents for cellulose fabrics, although halogen-containing flame retardants have better flame retardant effects, they are gradually replaced by halogen-free flame retardants due to secondary pollution problems during use and combustion. substitute. At present, organophosphorus flame retardants are widely used, among which N-hydroxymethyl-3-(dimethoxyphosphonic acid) acrylic acid (abbreviated MDPPA) and tetrahydroxymethyl phosphorus chloride (abbreviated THPC) The most widely used. Although MDPPA and THPC have good permanent flame-retardant effects as fabrics, there are still some problems: the biggest disadvantage of MDPPA is that the fabric loses a lot of strength and feels hard; the disadvantage of THPC is that its in...

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
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