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Adhesive and sealant systems

A technology of sealants and adhesives, applied in the direction of non-polymer adhesive additives, adhesive additives, adhesives, etc., which can solve problems such as use restrictions

Inactive Publication Date: 2010-03-24
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the use of hydrophilic fumed silica in adhesives and sealants is limited

Method used

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  • Adhesive and sealant systems
  • Adhesive and sealant systems
  • Adhesive and sealant systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0152] I. Preparation of Fumed Silica of the Invention

[0153] By using a metrological balance will be commercially available 200 (bag product) was metered into the grinder used and ground to prepare the examples of the present invention. 200 has the physical and chemical properties listed in Table 1.

[0154] Table 1

[0155] Fumed silica used

[0156]

[0157] 1) According to DIN ISO 9277

[0158] 2) According to DIN EN ISO 787-11, JIS K 5101 / 20 (not sieved)

[0159] 3) According to DIN EN ISO 787-2, ASTM D 280, JIS K 5101 / 23

[0160] 4) According to DIN EN 3262-20, ASTM D 1208, JIS K 5101 / 24

[0161] 5) Based on material dried at 105°C for 2 hours

[0162] 6) According to DIN EN ISO 787-9, ASTM D 1208, JIS K 5101 / 26

[0163] 7) Based on material calcined at 1000°C for 2 hours

[0164] 8) HCl content in ignition loss components

[0165] Experiments were performed using a pin-disc mill (Alpine 160Z, rotor diameter 160 mm) or an air jet mill (grinding chamber ...

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Abstract

Adhesive and sealant systems Adhesive and sealant systems on the basis of unsaturated polyester resins, epoxy resins, polyurethane, silane-terminated polymers, vinyl ester resins, acrylates, polyvinyl acetate, polyvinyl alcohol, polyvinyl ethers, ethylene-vinyl acetate, ethylene-acrylic acid copolymers, polyvinyl acetates, polystyrene, polyvinyl chloride, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, polysulphide, polyethylene, polypropylene, fluorinated hydrocarbons, polyamides, saturated polyesters and copolyesters, phenol-formaldehyde resins, cresol- / resorcinol-formaldehyde resins, urea-formaldehyde resins, melamine-formaldehyde resins, polyimides, polybenzimidazoles or polysulphones and containing 1% to 15% by weight of a hydrophilic fumed silica structurally modified by grinding.

Description

technical field [0001] This invention relates to adhesive and sealant systems. Background technique [0002] Adhesive and sealant systems known from Ullmann's der technischen Chemie, 4th Edition, Volume 14, page 227 (1997). [0003] Adhesive and sealant systems are composed of high polymers with excellent strength. Most adhesives and sealants contain as base materials high molecular weight organic compounds or reactive organic compounds that are precursors to polymeric compounds and react to form polymers during the bonding and sealing process. [0004] Various adhesive and sealant systems are known, e.g. based on unsaturated polyester resins, polyurethane resins or vinyl ester resins, hydrophilic fumed silicas are very Effective thixotropic agent (Degussa Schriftenreihe Pigmente (2001) No. 27 and No. 54). [0005] Disadvantageously, due to the particle size distribution of fumed silica, fumed silica often leads to roughness of the adhesive and sealant surfaces. [000...

Claims

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Application Information

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IPC IPC(8): C01B33/18C08K3/36C09C1/30C09J201/00
CPCC01P2006/12C08K3/36C09J11/04C09C1/3018C01P2004/64C01P2006/11B82Y30/00
Inventor J·迈尔M·肖尔茨
Owner EVONIK DEGUSSA GMBH
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