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There are three main phenomena of "yellowish" color of alkoxy porcelain white sealant：

1. The entire bottle/drum of porcelain white sealant turns yellow during storage. The main reason for this phenomenon is the quality of the titanium complex.

2. During storage, the bottom of the plastic bottle or the surface in the drum turn yellow. The main reason is that the sealant has poor sealing properties and causes skin formation. The solution is to control the moisture of the base material, the dosage of cross-linking agent, and the sealing of the plastic bottle or drum packaging to solve the problem of sealant skinning. As long as the sealant does not skin, this phenomenon will not occur.

3. The surface of sealant turn yellow after application. This phenomenon is mainly caused by the decomposition of amino silane (such as LT-550/792, etc.) under sunlight when the silicone sealant is made.