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Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure

A water-based polyurethane and adhesive technology, which is applied in the direction of graft polymer adhesives, adhesives, adhesive types, etc., can solve the problem of PU emulsion stability, self-thickening, solid content, and insufficient gloss retention. , toughness, wear resistance, weather resistance, water resistance, poor chemical resistance, etc.

Inactive Publication Date: 2002-06-26
王申
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems of pure PU emulsion are: poor toughness, wear resistance, weather resistance, water resistance and chemical resistance; There are also deficiencies in gloss retention
At present, the solvent method is mostly used to produce polyurethane adhesives, and most of them are single PU emulsions, which have many deficiencies in stability, self-thickening, solid content, application range, impact resistance and fatigue resistance, and damping characteristics.

Method used

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  • Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure
  • Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure
  • Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure

Examples

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Embodiment 1

[0020] Example 1: Fabric waterproof and moisture-permeable finishing agent: water-based PU / PA coating agent can be used in finishing processes such as dry coating and transfer printing, which can obtain water resistance and good heavyness; it feels plump and smooth, and has Breathable finishing effect. Prescription: 1. Front waterproof finishing: sumiflouil EM-11 20g / L2. Coating finishing: PU / PA 100 parts

[0021] Mirox AM+PVP 3 copies

[0022] Teflon289 5 parts

[0023] 2 parts of MD resin 3. Finishing: sumiflouil EM-11 30g / L

[0024] Water repellent 40g / L

[0025] Catalyst HA 20g / L process: (dry coating)

[0026] Pre-waterproof finishing (one soaking and one rolling), the temperature is 100-120 ℃,

[0027] Coating, drying (100-120°C), post-waterproof finishing (two dipping and two rolling), drying (100-120°C), baking (150°C, 30min) process: (transfer method)

[0028] Coating surface layer of release paper, drying (1mm, 100-120°C...

Embodiment 2

[0029] Embodiment 2: the microcapsule coating process of solid propellant filler: C1-20 / (PU / PA)=95-99% / 5-1%, interface cross-linking agent, coupling agent, vacuum spray drying (T= 50-110℃, vacuum degree: 1.2-5.3×10 4 Pa), the obtained wall thickness is 0.1um-3um, apparent density: 1.29 / cm 3 , powder with good fluidity, easy for casting and processing.

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Abstract

An acrylic acid modified polyurethane adhesive with networked "core-shell" structure is prepared through LIPN technique and seed emulsion polymerization. Its latex granularity is adjustable for distrilution in 20-200 mm. Its advantages include high adhesion, excellent resistance to fatigue, impact and abrasion, and wide application range including pressure-sensing adhesive, paint for fabric and leather, high-molecular medical material, passive-sensing package for high energy explosive, etc.

Description

Technical field: [0001] The invention relates to an interpenetrating network waterborne polyurethane latex adhesive with a "core-shell" structure, belonging to the technical field of new adhesives. Background technique: [0002] Polyurethane (PU) emulsion uses water as the dispersion medium, has the advantages of no pollution to the environment, low cost of non-combustibility, etc., and is widely used in the fields of coatings and adhesives. In recent years, the research on PU emulsion has been more active, but the research on the applied products focused on leather finishing agents, adhesives, textile coatings and slow-release isolation coating materials is less. Compared with their solvent-based products, polyacrylate (PA) emulsion and polyurethane (PU) emulsion have the advantages of being cheap, safe, non-flammable, non-toxic, and non-polluting. Therefore, they are widely used in coatings, adhesives, inks, and fabric finishes. be widely used. However, the problems of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/08
Inventor 谭惠民王申李淑华金韶华王连才
Owner 王申
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