Лако-красочные материалы — производство

This reaction is not commonly used in the formation of a film for surface coating applications.

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Polymer backbone Acrylic polymer backbone АЛЛА/ Figure 1-36 This reaction requires acid catalysis and normally utilises high stoving temperatures, (v) Reactions of Hydroxyl Containing Polymers with Carboxyl Groups

Acrylic polymer backbone /WW

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Polymer backbone

Figure 1-37

(vi)

Reaction of Carboxyl Containing Polymers with Epoxy Groups

Polymer backbone mmm Acrylic polymer backbone

Figure 1-38

Temperatures of 120-150°C and the presence of a base, to act as a catalyst, are required to bring about the reaction.

In the presence of base catalysts, such as amines, a ring opening reaction can occur.

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Acrylic polymer backbone /A/W Polymer backbone тшжтіт

Figure 1-39