公开(公告)号：US11505636B2

公开(公告)日：2022-11-22

申请号：US16463555

申请日：2017-11-21

Applicant: BASF SE

Inventor： Kostas S. Avramidis ,  Armin A. Burghart ,  Don M. Cho ,  Luke S. Egan ,  Vanessa Adams

IPC: C08F220/18 ,  C08F212/08 ,  C08F220/06 ,  C08F220/56 ,  C08F283/06 ,  C08F2/00 ,  C08F2/20 ,  C08F301/00 ,  C08G75/24 ,  C08G77/04 ,  C09D151/08

Abstract: The present disclosure relates to compositions comprising a copolymer derived from a vinyl aromatic monomer, a (meth)acrylate monomer, an acid monomer, and a copolymerizable surfactant and compositions comprising the same. The (meth)acrylate monomer can be selected from a monomer having a theoretical glass transition temperature (Tg) for its corresponding homopolymer of 0° C. or less or a hydrophobic (meth)acrylate monomer. In some embodiments, the copolymer is further derived from an organosilane. The copolymers can have a theoretical glass transition temperature (Tg) from −60° C. to 80° C. and a number average particle size of 250 nm or less. The compositions can be used to prepare compositions such as coatings that have improved water resistance, blush resistance, and/or resistance to hydrostatic pressures. Methods of making the copolymers are also provided.

公开(公告)号：US20210009731A1

公开(公告)日：2021-01-14

申请号：US16612154

申请日：2018-05-07

Applicant: BASF SE

Inventor： Kostas S. Avramidis ,  Vanessa Adams ,  Jeremy Funk

IPC: C08F212/08 ,  C09D125/10

Abstract: The present disclosure relates to compositions comprising a copolymer derived from polymerizing monomers comprising a vinyl aromatic monomer, butadiene, and an acid monomer, in the presence of a chain transfer agent. The chain transfer agent can be present in an amount sufficient to reduce the theoretical glass transition temperature (Tg) of the copolymer by at least 5° C. compared to a copolymer polymerized using identical monomers in the absence of the chain transfer agent. The compositions can be used to prepare compositions such as coatings that have improved water resistance. Methods of making the copolymers are also provided.