Moisture curable polydisulfides

A polydisulfide, moisture curing technology, applied in the field of polydisulfide, can solve the problems of short tank life and toxicity
CN102498157AInactive Publication Date: 2012-06-13HENKEL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENKEL CORP
Publication Date
2012-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided are polydisulfides that are useful in moisture curable sealants. The polydisulfides have an S-S link in the backbone and are end-capped with at least one alkoxysilane functional group. Also provided are methods of making the polydisulfides, including methods that do not require the presence of a catalyst.
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Description

technical field

[0001] The present invention relates to polydisulfides for use in moisture curable adhesive compositions capable of being cured by alkoxysilane groups to form high strength bonded articles. Background technique

[0002] Alkoxysilylated polymers can be crosslinked by atmospheric moisture under ambient conditions. Compositions based on these types of polymers are often referred to as RTV sealants (or adhesives). The best known example is RTV silicone sealant.

[0003] Flexible RTV moisture cure polymers are known in the art as useful adhesives, coatings, potting compounds and sealants. Silicone, Polyurethane, Silicone / Polyurethane, Silicone / Acrylic, just to name a few general categories that have been widely used.

[0004] For example, US Patent No. 5,554,709 discloses moisture-curing alkoxysilane-functional polyurethanes and their use in adhesive and sealing compositions. US Patent No. 7,009,022 discloses moisture curable siloxy terminated ABA triblock cop...

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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