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AZ Electronic Materials was acquired by Merck KGaA, Darmstadt, Germany, a leading company for innovative and top-quality high-tech products in the pharmaceutical, chemical and life science sectors. In the United States and Canada the subsidiaries of Merck KGaA, Darmstadt, Germany operate under the umbrella brand EMD.
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AZ Adhesion Promoter

AZ Adhesion Promoter is highly purified hexamethyldisilazane (HMDS), which is a clear colorless liquid with a characteristic ammonia-like odor. HMDS is widely used to promote adhesion of photoresist to semiconductor wafers and other substrates.
HMDS is typically applied onto wafers by the vapor prime method. The process is performed by injecting liquid HMDS into VPU, which converts the material into vapor. The volume and temperature applied determine contact angle.
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