公开(公告)号：WO2021257823A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/037819

申请日：2021-06-17

Applicant: SAUDI ARABIAN OIL COMPANY ,  ALFAISAL UNIVERSITY ,  ARAMCO SERVICES COMPANY

Inventor： LI, Wengang ,  ALSHARAEH, Edreese ,  KRISHNAN, Mohan, Raj

IPC: C09K8/80 ,  B05D2203/35 ,  B05D2502/00 ,  B05D2504/00 ,  B05D3/108 ,  B05D7/54 ,  C08G59/5006 ,  C08G59/5033 ,  C08K3/042 ,  C09K2208/10 ,  C09K8/805

Abstract: A coated proppant having a proppant particle, an intermediate cross-linked terpolymer layer encapsulating the proppant particle, and an outer resin layer encapsulating the intermediate cross-linked terpolymer layer. The proppant particle is selected from sand, ceramic, glass, and combinations thereof. The intermediate cross-linked terpolymer layer includes styrene, methyl methacrylate, and divinyl benzene. The outer resin layer includes a cured epoxy resin formed from an epoxy resin and a curing agent.

公开(公告)号：WO2022001515A1

公开(公告)日：2022-01-06

申请号：PCT/CN2021/096201

申请日：2021-05-27

Applicant: 浙江万盛股份有限公司

Inventor： 王秋伟 ,  顾奇 ,  李旭锋 ,  陈建 ,  吕云兴

IPC: C07C213/08 ,  C07C215/50 ,  C08G59/50 ,  C09D163/00 ,  C07C213/02 ,  C08G59/5033 ,  C09D5/08

Abstract: 本发明公开了一种高防腐性能腰果酚改性多元胺固化剂的制备方法，它将腰果酚、多聚甲醛和胺类化合物进行曼尼希反应，反应结束后加入水溶性引发剂进行聚合反应，反应结束后减压蒸除水分及过量的胺类化合物，得到腰果酚改性多元胺固化剂，固化剂与环氧树脂固化得到的涂料耐化学、耐腐蚀性能有很大的提高，表明本发明采用水溶性引发剂能够使很好烯烃聚合，聚合后分子明显的加强，从而使耐化学、耐腐蚀性能大大的提高。

公开(公告)号：WO2021197842A1

公开(公告)日：2021-10-07

申请号：PCT/EP2021/056756

申请日：2021-03-17

Applicant: BASF COATINGS GMBH

Inventor： KONDRAT, Anna ,  NIENHAUS, Egbert ,  RESSEL, Joerg ,  WEVER, Karin ,  PRZYBILLA, Silke ,  VOEGELING, Tim ,  SCHOEPS, Sibylle

IPC: C08G59/56 ,  C08G59/68 ,  C08G59/58 ,  C08G59/18 ,  C08G59/50 ,  C08G59/184 ,  C08G59/5026 ,  C08G59/5033

Abstract: The present invention relates to an aqueous coating composition, preferably an aqueous sanding surfacer or primer-surfacer, containing an aqueous epoxy resin dispersion (A), an aqueous amine-functional resin dispersion (B) and an aromatic carboxylic acid (C). The aqueous dispersion (B) contains at least one specific di- and/or polyfunctional monomeric amine (A1) and at least one resin component (RC) comprising at least one specific polyfunctional organic amine (A2). Moreover, the present invention relates to a kit-of-parts comprising a base varnish containing the aqueous epoxy resin dispersion (A) and a curing component containing the aqueous amine-functional resin dispersion (B) as well as the aromatic carboxylic acid (C). Additionally, the present invention relates to a process for producing a coating on the substrate as well as coated substrates resulting from said process. Cured coating layers formed from said compositions exhibit a good adhesion to the substrate as well as a high intercoat adhesion and blistering stability under humidity conditions without negatively influencing the excellent sandability and the good stone chipping properties.