CAS：5625-37-6| The Application of PIPES in architectural coatings

Product Name：PIPES
CAS：5625-37-6
Molecular Formula：  C8H18N2O6S2
Article No.：P0002
Structural Formula：

Product Introduction
PIPES is mainly used as a biological buffer and can be used in laboratory research and chemical production processes. In addition, PIPES can also be used in building materials and exterior wall coatings.
Application of PIPES
External wall coatings require a combination of primer, intermediate coat, topcoat, and a reasonable construction process to display the best results. On the one hand, the primer is directly in contact with traditional exterior wall substrates such as concrete and cement mortar, and on the other hand, it is used in conjunction with exterior wall intermediate coatings and topcoats. Faced with such a complex environment, the primer should have high strength to provide stable adhesion for the exterior wall intermediate coating, and prevent the coating from peeling and peeling off; Secondly, the primer needs to have alkali resistant sealing properties, as traditional exterior wall base layers mostly contain a large amount of saline alkali substances. As a coating that directly contacts the base layer, the primer must maintain chemical stability in an alkaline environment; Once again, the primer needs to reduce the water absorption of the exterior wall base layer to avoid the phenomenon of blooming caused by inconsistent drying rates of exterior wall coatings; Finally, the shorter the curing time required for the primer, the better, to balance the contradiction between the construction period and the primer drying time.
At present, there are three main problems with conventional alkali resistant sealing primers on the market. First, the poor alkali resistance of lotion itself and low content of lotion lead to low film forming efficiency of lotion and degradation in alkaline environment, reducing the sealing effect of primer; Secondly, the waterproof performance of the primer is poor. The infiltration of water from the wall surface into the interior of the base layer can damage the structure, and the infiltration of water from the base layer into the wall surface can cause whitening due to the migration of saline alkali substances; The third issue is that the adhesion between the primer and the base layer of the exterior wall and the intermediate coating is poor, and it is easy to be peeled off by the use of decorative paper. Therefore, there is an urgent need to propose a new high-strength anti salt alkali sealing primer product to solve the problems of conventional anti alkali sealing primers currently available on the market. Therefore, the CN114149744A patent provides a high-strength salt alkali resistant bio based sealing primer. The main components of the primer include component A (protein film crosslinking solvent) and component B (disulfide bond reducing agent buffer and amyloid protein buffer), with the buffer being at least one of HEPES, TAPS, TES, MOPS, PIPES, and MES.

References
CN114149744A  A high-strength anti salt alkali bio based sealing primer and its construction method.