	US 12,330,343 B2
	Process for joint recycling of composite items based on a thermoplastic polymer matrix
Jean-Luc Dubois, Colombes (FR)
Assigned to Arkema France, Puteaux (FR)
Appl. No. 17/642,369
Filed by Arkema France, Colombes (FR)
PCT Filed Sep. 25, 2020, PCT No. PCT/FR2020/051677 § 371(c)(1), (2) Date Mar. 11, 2022, PCT Pub. No. WO2021/058923, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 1910659 (FR), filed on Sep. 26, 2019.
Prior Publication US 2022/0324140 A1, Oct. 13, 2022
Int. Cl. C07C 67/00 (2006.01); B29B 13/10 (2006.01); B29B 17/02 (2006.01); B29K 33/00 (2006.01); B29K 105/00 (2006.01)

CPC B29B 17/0206 (2013.01) [B29B 13/10 (2013.01); C07C 67/00 (2013.01); B29B 2017/0224 (2013.01); B29B 2017/0258 (2013.01); B29K 2033/12 (2013.01); B29K 2105/0002 (2013.01)]

22 Claims

1. A process for recycling a first article to be recycled including a composite material based on a fibrous reinforcer and a thermoplastic polymer matrix, wherein said recycling process comprises:

introduction of the first article to be recycled into a system suitable for the recycling of thermoplastic polymer,

introduction, into the system suitable for the recycling of thermoplastic polymer, of a second article to be recycled including a thermoplastic polymer resin, and not including any fibrous reinforcer,

heating of the first article to be recycled and the second article to be recycled at a given temperature in said system suitable for recycling thermoplastic polymer, so as to depolymerize the thermoplastic polymers, and to form base monomers of said thermoplastic polymers, and

recovery of the constituent base monomers of said thermoplastic polymers.