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Zinc(ii) complex compounds as catalysts for polyurethane compositions

一种络合化合物、组合物的技术，应用在锌有机化合物等方向，能够解决催化活性低等问题

Active Publication Date: 2014-08-13
SIKA TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But zinc carboxylate (II) has relatively low catalytic activity aspect carbamate reaction, so in practice zinc carboxylate (II) can only be used as cocatalyst usually, for example with bismuth carboxylate ( III) or in combination with zirconium (IV) carboxylate

Method used

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  • Zinc(ii) complex compounds as catalysts for polyurethane compositions
  • Zinc(ii) complex compounds as catalysts for polyurethane compositions
  • Zinc(ii) complex compounds as catalysts for polyurethane compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Example 1: Bis(N,N-diethyl-3-oxabutyramide) zinc (II)

[0078] According to general preparation procedure A, 3.39 g of bis(acetylacetonate)zinc(II) and 4.11 g of N,N-diethyl-3-oxetanamide were reacted. 4.52 g of a yellow solid are obtained.

[0079] FT-IR: 2974, 2932, 2873, 1721, 1638, 1556, 1513, 1435, 1387, 1358, 1308, 1274, 1208, 1164, 1096, 1080, 1007, 955, 921, 828, 765, 728, 668.

[0080] UV-vis: 270 (0.22). (See bis(acetylacetonate)zinc(II): 294(0.21) and 280(0.27).)

Embodiment 2

[0081] Example 2: Bis(N,N-diethyl-3-oxetanamide)zinc(II) in TEGDME

[0082] According to General Preparation Procedure B, 5.27 g of bis(acetylacetonate)zinc(II) and 6.60 g of N,N-diethyl-3-oxetanamide were reacted in 10.02 g of TEGDME. 21.89 g of a yellow solution are obtained.

Embodiment 3

[0083] Example 3: Bis(N,N-dibutyl-3-oxabutyramide) zinc (II)

[0084] According to General Preparation A, 2.76 g of bis(acetylacetonate)zinc(II) and 4.69 g of N,N-dibutyl-3-oxetanamide were reacted. 5.66 g of a viscous orange oil are obtained.

[0085] 1 H-NMR (CDCl 3 ):δ0.85-1.0(m,12H,CH 3 CH 2 ),1.2-1.4(m,8H,CH 2 CH 3 ),1.4-1.6(m,8H,CH 2 CH 2 CH 3 ),1.95(s,6H,MeCO),3.1-3.1(m,4H,NCH 2 ),3.25-3.35(m,4H,NCH 2 ), 4.8 (s, 2H, CHCO).

[0086]FT-IR: 2955, 2929, 2870, 2359, 1581, 1555, 1511, 1463, 1388, 1366, 1290, 1227, 1204, 997, 947, 764, 732.

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Abstract

Zinc(II)-complex compound (I), is new. Zinc(II)-complex compound of formula (Zn(L) x(Y) 2-x) (I), is new. x : 1 or 2; Y : single negatively charged ligand; L : ligand of formula (R1-C(O ->)=C(R2)-C(=O)-N(R3)(R4)) (II); R1, R2 : H, optionally saturated 1-10C hydrocarbyl or 3-6C divalent alkylene; and R3, R4 : H, monovalent saturated hydrocarbyl (optionally containing 1-12C heteroatoms), or divalent alkylene (optionally containing 3-6C heteroatoms). Independent claims are also included for: (1) preparing (I); and (2) two-component polyurethane composition comprising at least one polyol as first component, at least one polyisocyanate as second component and zinc(II)-complex compound.

Description

technical field [0001] The present invention relates to the field of polyurethane compositions and catalysts for polyurethane compositions. Background technique [0002] Polyurethane compositions have been known for a long time and are used in many areas. In academia, it is usually divided into one-component and two-component polyurethane compositions. One-component polyurethane compositions cure under the influence of atmospheric moisture. Two-component polyurethane compositions comprise as the second component a curing agent component which mainly comprises polyamines and / or polyols. In both cases compounds or prepolymers containing isocyanate groups are used. [0003] Catalysts are added to accelerate curing. Although a large number of polyurethane catalysts are known, most polyurethane catalysts are not particularly selective with regard to the urethanization reaction (ie the reaction of the OH-groups of alcohols with isocyanate groups), but more or less also catalyz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C08G18/48
CPCC08G18/222C08G18/4812C07F3/06
Inventor U·布尔克哈德特R·堪纳斯
Owner SIKA TECH AG
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