公开(公告)号：US12240959B2

公开(公告)日：2025-03-04

申请号：US17292815

申请日：2018-11-14

Applicant: RHODIA OPERATIONS

Inventor： Gary Woodward ,  Junli Li ,  Yong Yang

IPC: C08K5/00 ,  C08K5/52 ,  C08L77/06

Abstract: Provided are a process for preparing a flame retardant, a flame retardant obtained by the process and use of the flame retardant in a polymer composition.

公开(公告)号：US10457899B2

公开(公告)日：2019-10-29

申请号：US15519199

申请日：2015-10-15

Applicant: RHODIA OPERATIONS

Inventor： Inigo Gonzalez ,  Marie-Pierre Labeau ,  Gary Woodward

IPC: C08F226/02 ,  C11D3/37 ,  C08F230/02 ,  C08F8/12 ,  C08F218/08 ,  C11D11/00 ,  C08F8/40 ,  C08F220/34

Abstract: The invention relates to polyfunctional polymers suitable in particular for the treatment of metal surfaces (metal finishing) and comprising: monomer units u1 bearing phosphonic acid functions; monomer units u2 bearing amine functions; and optionally monomer units u3 bearing alcohol units —OH.

公开(公告)号：US10239960B2

公开(公告)日：2019-03-26

申请号：US15179103

申请日：2016-06-10

Applicant: RHODIA OPERATIONS

Inventor： Laurianne Timbart ,  Gilda Lizarraga ,  Gary Woodward ,  Subramanian Kesavan ,  David James Wilson

IPC: C08B37/00 ,  C09K8/035 ,  C09K8/40 ,  C09K8/52 ,  C09K8/62 ,  C09K8/74 ,  E21B43/26 ,  C09K8/68 ,  C09K8/90 ,  C08L5/00 ,  C09K8/60

Abstract: Products and processes that are related to phosphonated polysaccharide compositions, including phosphonated polysaccharide gels, having a substituent degree of substitution with a lower limit of 0.02 and an upper limit of 3, and having a weight average molecular weight with an upper limit of 5,000,000 g/mole, as well as to oil field application or fracturing fluid compositions comprising such phosphonated polysaccharide compositions.

公开(公告)号：US09896463B2

公开(公告)日：2018-02-20

申请号：US15110971

申请日：2015-01-15

Applicant: RHODIA OPERATIONS

Inventor： Gary Woodward

IPC: C07F9/02 ,  C07F9/24

CPC classification number: C07F9/2412 ,  C07F9/2408 ,  C07F9/2458

Abstract: The instant invention relates to a method of phosphorodiamidite production that comprises: (E1) preparing a purified solution of a dialkylamine in a polar solvent as follows: —the dialkylamine dissolved in a polar solvent is contacted with a quantity of phosphorus trihalide that is sufficient to react with the alcohol impurities contained in the dialkylamine but sufficiently low to leave a major part of the dialkylamine unreacted, whereby a mixture is obtained that contains the dialkylamine in the polar solvent and reaction products of the impurities with the phosphorous trihalide; —the unreacted dialkylamine and polar solvent present in the mixture obtained in step (E1.1.) are extracted from the solution S by their difference of volatility, typically by distillation, whereby the purified solution of the dialkylamine in the polar solvent is obtained; (E2) the purified solution of dialkylamine in a polar solvent as obtained in step (E1) is reacted with a phosphorus trihalide, whereby an intermediate compound is formed; (E3) the intermediate compound obtained in step (E2) is reacted with a hydroxyalkyl compound in the presence of a non-polar co-solvent.