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Preparation of amino-silane terminated polymer by using organic bismuth catalyst and cured polymer therefrom by using non-tin catalyst

一种催化剂、锌化合物的技术，应用在聚氨酯预聚物组合物领域，能够解决成本高、复杂等问题

Active Publication Date: 2008-09-24
MOMENTIVE PERFORMANCE MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] All known methods for preparing silane-crosslinked polymers have the disadvantage that the polymers must be processed under conditions including the absence of moisture
In industrial practice this is very complex and therefore expensive

Method used

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  • Preparation of amino-silane terminated polymer by using organic bismuth catalyst and cured polymer therefrom by using non-tin catalyst
  • Preparation of amino-silane terminated polymer by using organic bismuth catalyst and cured polymer therefrom by using non-tin catalyst
  • Preparation of amino-silane terminated polymer by using organic bismuth catalyst and cured polymer therefrom by using non-tin catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] The symbols, terms and abbreviations used in the examples have the following meanings:

[0039] Polypropylene glycol (polyol):

[0040] 4200: fn=2, Mn=4,000 polyether polyol sold by Bayer Corporation.

[0041] 8200: polyether polyol sold by Bayer Corporation with fn=2, Mn=8,000;

[0042] 2120: Polyether polyol with fn=2, Mn=12,000 sold by Shanghai Gaoqiao Petrochem Isocyanates: M-0129: MDI containing 55% 2,4-MDI and 45% 4,4-MDI sold by Bayer Corporation. IPDI: isophorone diisocyanate sold by Degussa;

[0043] Silane:

[0044] A-Link 15, N-ethyl-3-trimethoxysilyl-2-methylpropylamine sold by General Electric Company, A-Link 35, 3-isocyanatopropyltrimethoxysilane sold by General Electric Company, A-1120: N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane sold by the General Electric Company.

[0045] catalyst:

[0046] Formerz SUL-4: Dibutyltin dilaurate sold by the General Electric Company.

[0047] 83: Organobismuth catalyst with a bismuth content of 16....

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Abstract

The present invention relates to a process for preparing silylated isocyanato-terminated polyurethane prepolymer which have increased stability toward atmospheric moisture, in the presence of at least one catalyst selected from the group consisting of bismuth and zinc compounds.

Description

technical field [0001] The present invention relates to silyl-functionalized polymer compositions having increased stability to atmospheric moisture. More specifically, this invention relates to the preparation of moisture-curable, silylated, isocyanato-terminated polyurethane prepolymers without the use of tin catalysts by using less toxic alternatives in the product. Polymer compositions suitable for use as sealants, adhesives and coatings. Background technique [0002] Moisture crosslinkable formulations are well known, especially those based on silyl-functional polymers. The silyl-functional polymers are prepared by conventional methods. An example is the reaction of polymers whose terminal groups contain active hydrogen with isocyanates, in particular isocyanatoalkylalkoxysilanes. Another example is the reaction of isocyanate-terminated polyurethane prepolymers with aminosilanes. The reaction is carried out in the presence or absence of a catalyst which promotes the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/48C08G18/12C08G18/22
CPCC08G18/10C08G2190/00C08G18/227C08G18/289C08G18/718C08G18/12C08G18/22C08G18/48
Inventor 杨雨润米斯蒂·黄
Owner MOMENTIVE PERFORMANCE MATERIALS INC
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