US 12,435,180 B2
Poly(3-hydroxyacid) polymers from long-chain epoxides and their uses related to hot melt adhesives
Steven D. Gray, Wauwatosa, WI (US); and Darius Deak, Wauwatosa, WI (US)
Assigned to Bostik SA, Puteaux (FR)
Filed by Bostik SA, Colombes (FR)
Filed on Jun. 29, 2022, as Appl. No. 17/852,469.
Claims priority of provisional application 63/216,031, filed on Jun. 29, 2021.
Prior Publication US 2023/0002549 A1, Jan. 5, 2023
Int. Cl. C08G 63/08 (2006.01); C08F 283/00 (2006.01); C08G 63/91 (2006.01); C09J 167/04 (2006.01)
CPC C08G 63/08 (2013.01) [C08F 283/004 (2013.01); C08G 63/912 (2013.01); C09J 167/04 (2013.01); C08G 2230/00 (2013.01); C09J 2301/302 (2020.08); C09J 2301/304 (2020.08); C09J 2467/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A macromolecule comprising a ring-opened polymerized product of β-lactone monomers of formula I:

OG Complex Work Unit Chemistry
and higher lactone monomers of formula III:

OG Complex Work Unit Chemistry
wherein X=(CH2)a, or

OG Complex Work Unit Chemistry
and having a structure of formula IIIB:

OG Complex Work Unit Chemistry
wherein: (1) R2 is hydrogen or an alkyl or a substituted alkyl; (2) a is at least 3; (3) the total of m and p is between 10 and 10,000; (4) the macromolecule is a diol and is hydroxy-terminated and R1 is an alkyl having at least 8 carbon atoms; and (5) D is a hydrocarbon residue from a diol initiator.