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Composition comprising silylated polymers

一种甲硅烷基化、组合物的技术，应用在聚脲/聚氨酯粘合剂、粘合剂类型、聚脲/聚氨酯涂料等方向，能够解决锡水平过高、聚合物变色、未证明等问题

Active Publication Date: 2016-02-03
HUNTSMAN INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, these alternatives have not proven satisfactory, either the tin levels are still too high from a toxicity standpoint, or the alternative curing agents do not exhibit the same levels as tin
Also, some alternative curing agents are known to cause strong polymer discoloration, which is an unwanted feature

Method used

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  • Composition comprising silylated polymers
  • Composition comprising silylated polymers
  • Composition comprising silylated polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0190] Example 1 (according to the invention)

[0191] Isobutyl POMS titanium isopropoxide in DINP (orthophthalene di 2.7 wt% solution in di-isononyl formate). This solution was formulated with silylated polyurethane resin 1. The solution contained 91.3 wt% silylated polyurethane resin and 8.7 wt% isobutyl POMS titanium isopropoxide solution. The mixture was flushed with nitrogen and mixed for 5 minutes at 2500 rpm. The final content of isobutyl POMS titanium isopropoxide in the silylated polyurethane resin was 0.23 wt% (0.012 wt% Ti). Casting at 500 microns was performed and cure characteristics studied with a BK dryer recorder.

[0192] Start Open Time: 42 minutes, and Scratch End Time: 110 minutes.

Embodiment 2

[0193] Example 2 (Comparative example - Sn cured silylated polyurethane resin)

[0194] The mixture was prepared by shearing a 5.4 wt% mixture of dibutyltin dilaurate (DBTDL) and DINP (di-isononyl phthalate) at 2500 rpm for 5 minutes. This solution was formulated with a silylated polyurethane resin. The solution contained 91.3 wt% of silylated polyurethane resin 1 and 8.7 wt% of DBTDL solution. The mixture was flushed with nitrogen and mixed for 5 minutes at 2500 rpm. The final content of DBTDL in the silylated polyurethane resin was 0.47 wt% (0.087 wt% of Sn). Casting at 500 microns was performed and cure characteristics studied with a BK dryer recorder.

[0195] Start Open Time: 41 minutes, Scratch End Time: 105 minutes.

[0196] Examples 1 and 2 have shown that with half the amount of isobutyl POMS titanium isopropoxide added to the silylated polyurethane resin compared to DBDTL, or alternatively the amount of titanium isopropoxide added to the silylated polyurethane ...

Embodiment 3

[0197] Example 3 (according to the invention)

[0198] A 3.3 wt% solution of this catalyst in toluene was prepared by dissolving isobutyl POMS titanium isopropoxide in the solvent in an ultrasonic bath for 30 minutes at RT, followed by mixing at 2500 rpm for 6 minutes. This solution was formulated with silylated polyurethane resin 1. The solution contained 94.1 wt% silylated polyurethane resin and 6.9 wt% isobutyl POMS titanium isopropoxide. The mixture was flushed with nitrogen and mixed for 5 minutes at 2500 rpm. The final content of isobutyl POMS titanium isopropoxide in the silylated polyurethane resin was 0.23 wt%. Casting at 500 microns was performed and cure characteristics studied with a BK dryer recorder.

[0199] Start Open Time: 43 minutes, Scratch End Time: 115 minutes.

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Abstract

The present invention relates to a tin-free composition comprising at least one silylated polymer and at least one tin-free polyhedral oligomeric metallo silsesquioxane. The present invention also relates to a process of curing a composition comprising a silylated polymer comprising the step of: contacting a silylated polymer with a tin- free polyhedral oligomeric metallo silsesquioxane.

Description

field of invention [0001] The present invention relates to compositions comprising silylated polymers comprising alkoxysilyl and / or silanol groups, and more particularly silylated polyurethanes, and to the preparation of such method of class composition. Background of the invention [0002] A number of commercial compositions containing moisture curable silylated polymers are known and have many commercial applications. For example, silylated polyurethane resins are useful in coatings, adhesives, sealants and industrial elastomeric goods. [0003] Curing of these moisture-curable silylated polymer compositions requires the use of a curing agent. Organotin compounds such as dibutyltin dilaurate (DBTDL) have been shown to be the most effective compounds for catalyzing the curing process involving hydrolysis / condensation reactions of silylated polymers. [0004] However, these organotin compounds are classified as toxic and their use in articles for human or animal use shoul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/549C08L43/04C08G18/22
CPCC08G18/4825C08G18/7671C08G18/289C08K5/549C09J175/04C08G2190/00C09D175/04C08G77/58C08G77/485C08K5/56C08G2110/0016C08G2110/0008C08G2110/0025C08L43/04C08G18/22C08G77/18C08G77/08C08G77/16
Inventor C.普哈诺波洛斯S.霍沃伊特F.德塞斯夸伊勒斯R.A.克莱恩
Owner HUNTSMAN INT LLC
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