	US 12,404,358 B2
	Hydrophobic, low glass transition temperature oligomer with chain transfer agent
Gianna Pastena, Flanders, NJ (US); Brian Munoz, Union, NJ (US); Hrire Gharapetian, Ridgewood, NJ (US); Thomas Penny, Newton, NJ (US); and Ajaya Nanda, Flanders, NJ (US)
Assigned to Columbia Insurance Company, Omaha, NE (US)
Filed by Columbia Insurance Company, Omaha, NE (US)
Filed on Jun. 30, 2022, as Appl. No. 17/854,565.
Application 17/854,565 is a continuation in part of application No. PCT/US2020/063918, filed on Dec. 9, 2020.
Claims priority of provisional application 62/954,906, filed on Dec. 30, 2019.
Prior Publication US 2022/0340773 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 220/06 (2006.01); C08K 3/013 (2018.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08K 3/28 (2006.01); C09D 7/65 (2018.01); C09D 17/00 (2006.01)

CPC C08F 220/06 (2013.01) [C08K 3/04 (2013.01); C08K 3/22 (2013.01); C08K 3/28 (2013.01); C09D 7/65 (2018.01); C09D 17/002 (2013.01); C09D 17/004 (2013.01); C08K 3/013 (2018.01); C08K 2003/2265 (2013.01)]

26 Claims

1. A colorant composition to tint a paint or stain composition comprising a pigment and an additive, wherein said additive is polymerized from at least one acrylate monomer and a chain transfer agent,

wherein the additive has a weight average molecular weight (Mw) from about 2,000 Daltons to about 5,000 Daltons,

wherein the chain transfer agent comprises a hydrogen-sulfur (H—S) functionality and is present from about 8 to about 20 parts per hundred parts of monomers (phr),

wherein the additive's glass transition temperature ranges from about −50° C. to about −10° C.,

wherein said additive is hydrophobic.