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1.发明公开公开(公告)号：US20230323013A1
公开(公告)日：2023-10-12
申请号：US18006146
申请日：2021-07-22
申请人： BASF SE
CPC分类号： C08G18/798 , C08G18/10 , C08G18/20
摘要： A process for preparing a polymer containing a structural element involves: (a) providing an uretdione of formula (I), and (b) opening a ring of the uretdione at a temperature greater than 50° C. and in the presence of a catalyst composition containing at least one catalyst, to obtain the polymer. In the element —N—C(═O)—X2, X2 is a derivative of the group X1 reactive towards isocyanates: The polymer containing the element —N—C(═O)—X2—obtained from the process is useful. A method for modifying polymers which have reactive groups towards isocyanate groups involves: (i) providing a polymer having at least one functional group reactive towards isocyanate groups; (ii) providing an uretdione, of formula (II); and (iii) reacting the polymer with the uretdione at a temperature of more than 50° C. in the presence of a catalyst composition containing at least one catalyst. The modified polymer obtained according to the method is useful.
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公开(公告)号：US12031030B2
公开(公告)日：2024-07-09
申请号：US18552651
申请日：2022-03-21
申请人： BASF SE
发明人： Florian Ludwig Geyer , Peter Rudolf
摘要： A process for preparing a sulfur copolymer, a sulfur copolymer, and a polymer composition containing one or more sulfur copolymers are provided. The process involves copolymerizing a cyclic monothiocarbonate compound of formula
wherein R1 and R2 are independently of one another hydrogen. C1-C18-alkyl, C1-C18-alkyl substituted with halogen or interrupted with O or S; C6-C18-aryl or C6-C12-aryl substituted with C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio or halogen; with elemental sulfur in the presence of a polymerization initiator.-
公开(公告)号：US20240101823A1
公开(公告)日：2024-03-28
申请号：US18552651
申请日：2022-03-21
申请人： BASF SE
发明人： Florian Ludwig Geyer , Peter Rudolf
摘要： A process for preparing a sulfur copolymer, a sulfur copolymer, and a polymer composition containing one or more sulfur copolymers are provided. The process involves copolymerizing a cyclic monothiocarbonate compound of formula
wherein
R1 and R2 are independently of one another hydrogen, C1-C18-alkyl, C1-C18-alkyl substituted with halogen or interrupted with O or S; C6-C18-aryl or C6-C12-aryl substituted with C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio or halogen; with elemental sulfur in the presence of a polymerization initiator.
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