| abstract |
Disclosed is a defoaming composition. The defoaming composition is composed of composition E and composition F. The composition E is composed of a hydrogen bond donor, polyether modified polysiloxane C, and a hydrogen bond acceptor X. The composition F is composed of a hydrogen bond donor, fatty alcohol polyether D, and a hydrogen bond acceptor Y. The polyether modified polysiloxane C is composed of polyorganosiloxane A and allyl polyether B. The defoaming composition provided in the present invention introduces hydrogen bond acceptors on the basis of silicone polyether and polyether to generate new substances by means of reaction, so as to improve the compatibility with application systems while achieving the defoaming performance. |