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Silane modified castor oil, room temperature curing sealant and preparation method thereof

A silane modification, room temperature curing technology, used in chemical instruments and methods, adhesives, organic chemistry, etc.

Active Publication Date: 2022-03-25
GUANGZHOU BAIYUN CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no relevant report describing the product obtained by grafting castor oil with hydrosilane and its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this embodiment, a silane-modified castor oil-based room temperature curing sealant is prepared by the following method:

[0035] Add 10 parts by weight of trimethoxyhydrogensilane and 46 parts by weight of xylene in an oil bath reactor with a thermometer, a constant pressure dropping funnel, an agitator, and a condenser, and control the temperature of the material in the kettle to 80°C. The mixed solution of 70 parts by weight of castor oil and 0.0030 parts by weight of chloroplatinic acid was added dropwise to the reactor in 120 minutes, and the temperature of the material in the kettle was adjusted to 90° C. and continued to react for 300 minutes; finally, the temperature was adjusted to 120° C. and the vacuum was reduced to The solvent was removed below -0.09MPa for 190min to obtain silane-modified castor oil.

[0036] Add 60 parts by weight of silane-modified castor oil, 30 parts by weight of di-n-butyl phthalate and 90 parts by weight of fumed silica in a plane...

Embodiment 2

[0038] In this embodiment, a silane-modified castor oil-based room temperature curing sealant is prepared by the following method:

[0039]Add 20 parts by weight of triethoxyhydrogensilane and 47 parts by weight of butyl acetate in an oil bath reaction kettle with a thermometer, a constant pressure dropping funnel, a stirrer, and a condenser tube, and control the temperature of the material in the kettle to 75°C , a mixture of 90 parts by weight of castor oil and 0.0015 parts by weight of chloroplatinic acid was added dropwise to the reactor in 150 minutes, and the temperature of the material in the kettle was adjusted to 95°C for 600 minutes of continuous reaction; finally, the temperature was adjusted to 140°C and the vacuum was reduced The solvent was removed for 170 minutes when the temperature was lower than -0.09MPa to obtain silane-modified castor oil.

[0040] Add 70 parts by weight of silane-modified castor oil, 50 parts by weight of diisononyl phthalate and 120 parts...

Embodiment 3

[0042] In this embodiment, a silane-modified castor oil-based room temperature curing sealant is prepared by the following method:

[0043] Add 10 parts by weight of triethoxyhydrogensilane and 42 parts by weight of pentanone in an oil bath reaction kettle with a thermometer, a constant pressure dropping funnel, a stirrer, and a condenser tube, and control the temperature of the material in the kettle to 65°C. A mixture of 80 parts by weight of castor oil and 0.0025 parts by weight of chloroplatinic acid was added dropwise to the reaction kettle over 130 minutes, and the temperature of the materials in the kettle was adjusted to 85°C for 420 minutes; finally, the temperature was adjusted to 130°C and the vacuum degree was reduced. Remove the solvent for 180 minutes until the temperature is below -0.09MPa to obtain silane-modified castor oil.

[0044] Add 65 parts by weight of silane-modified castor oil, 40 parts by weight of di-n-octyl phthalate and 100 parts by weight of gas-...

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Abstract

The invention provides silane modified castor oil, a room temperature curing sealant and a preparation method thereof. The silane modified castor oil is obtained by reacting hydrogen-containing silane and castor oil under the action of a catalyst, and the silane modified castor oil comprises the following components in parts by weight: 10-20 parts of hydrogen-containing silane and 70-90 parts of castor oil. The room temperature curing sealant is prepared from the following components in parts by weight: 60 to 70 parts of silane modified castor oil, 30 to 50 parts of plasticizer, 90 to 120 parts of filler, 1.0 to 2.5 parts of coupling agent and 0.1 to 1.0 part of catalyst. The silane modified castor oil can replace derivative products of petrochemical products to serve as a main raw material for preparing the sealant, and the room-temperature curing sealant is obtained through component optimization. The preparation raw materials of the sealant belong to renewable biological resources, the dependency of traditional sealants on petrochemical resources is overcome, and the sealant has the advantages of short surface drying time, good mechanical properties, good repeatability of the preparation method and the like, can be widely applied to the fields of building, industrial sealing and the like, and has very high application value.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a silane-modified castor oil, a room temperature curing sealant and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the sealant industry has entered the fast lane of development, and various new sealants are widely used in various industries. At present, the mainstream sealants in the market include polyurethane sealants, epoxy sealants, polyacrylate sealants, polysulfide sealants and organic silicone sealants, etc., but although there are many types, their raw materials mainly come from derivatives of petrochemical products. [0003] The existing mainstream sealants have a serious dependence on fossil resources. As we all know, fossil resources seriously restrict the sustainable development of human society due to their limited reserves and non-renewable nature. In addition, the use of fossil resource ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C09J191/00C09J11/04C09J11/06
CPCC07F7/1876C09J191/00C09J11/04C09J11/06C08K2003/2227C08K2003/265C08K2201/011C08K5/12C08K5/11C08K7/26C08K3/22C08K3/26Y02W90/10
Inventor 戴飞亮付子恩蒋金博罗元章洪展鹏周波雄
Owner GUANGZHOU BAIYUN CHEM IND
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