Two-component decoration sealant and preparation method thereof
A joint-beautifying agent, a two-component technology, applied in the field of caulking agent, can solve problems such as short duration of brightness, easy yellowing after a long time, and not resistant to water scrubbing, etc.
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preparation example 1
[0081] Preparation of Modified Curing Agent I: Isophorone Diamine (IPDA)
[0082] Add 30 parts by weight of E-51 epoxy resin (epoxy equivalent: 185-190g / eq) dropwise to 23 parts by weight of isophoronediamine (molecular weight: 170) within 1.5h, and control the reaction temperature to 50°C , and reacted for 2h to obtain the modified curing agent I.
preparation example 2
[0084] Preparation of Modified Curing Agent II:
[0085] Add 35 parts by weight of E-51 epoxy resin to 18 parts by weight of diaminomethylcyclohexane (molecular weight: 142) dropwise within 1.5 hours, control the reaction temperature to 50°C, and react for 2 hours to obtain modified curing agent II.
preparation example 3
[0087] Preparation of modified curing agent III:
[0088] Add 23 parts by weight of 30 parts of epoxy resin dropwise to isophorone diamine within 1.5 hours, control the reaction temperature to 50° C., react for 2 hours, and mix the mixture. Then add 1.5 parts by weight of benzyl alcohol into the mixture and stir to obtain the modified curing agent III.
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