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Provided is a treating solution for soft contact lenses capable of imparting hydrophilicity and sustainability thereof to a soft contact lens surface. It has been found that a treating solution for soft contact lenses containing a copolymer that contains two kinds of monomers different from each other as constituent units at a specific ratio, and that has a specific weight-average molecular weight can impart excellent hydrophilicity and sustainability thereof.

Titel:	Soft contact lens treatment solution
Autor/in / Beteiligte Person:	NOF, CORPORATION
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2023
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 11746,308 Publication Date: September 05, 2023 Appl. No: 16/767370 Application Filed: December 03, 2018 Assignees: NOF CORPORATION (Tokyo, JP) Claim: 1. A soft contact lens treatment method, comprising subjecting a soft contact lens to surface treatment with a treating solution containing a copolymer (P) consisting of a combination of 50 mol % to 99 mol % of a hydrophilic monomer represented by the formula (1a) and 1 mol % to 50 mol % of 2-aminoethyl methacrylate hydrochloride, and that has a weight-average molecular weight of from 10,000 to 5,000,000: [chemical expression included] in the formula (1a), R 1 represents a hydrogen atom or a methyl group. Claim: 2. The soft contact lens treatment method according to claim 1 , wherein the treating solution for soft contact lenses is a shipping solution for soft contact lenses. Claim: 3. The soft contact lens treatment method according to claim 1 , wherein the treating solution for soft contact lenses is a care product for soft contact lenses. Claim: 4. The soft contact lens treatment method according to claim 1 , wherein the copolymer (P) contains as constituent units 92.5 mol % to 99 mol % of a hydrophilic monomer represented by the formula (1a) and 1 mol % to 7.5 mol % of 2-aminoethyl methacrylate hydrochloride. Patent References Cited: 20120026457 February 2012 Qiu et al. ; 20150024987 January 2015 Matsuoka ; 2012-088524 May 2012 ; 2013-533518 August 2013 ; 2017-146334 August 2017 ; 2017-146334 August 2017 ; 2017-151437 August 2017 ; WO-2016145204 September 2016 Other References: Shujiro Sakaki, et al., A Water-Soluble Phospholipid Polymer as a New Biocompatible Synthetic DNA Carrier, 77 Bull. Chem. Soc. Jpn. 2283 (Year: 2004). cited by examiner ; Neha Buchar, et al, Detailed Study of the Reversible Addition-Fragmentation Chain Transfer Polymerization and Co-Polymerization of 2-methacryloyloxyethyl phosphorylcholine, 2 Polym. Chem. 632 (Year: 2011). cited by examiner ; Xiaojie Lin & Kazuhiko Ishihara, Water-Soluble Polymers Bearing Phosphorylcholine Group and Other Zwitterionic Groups for Carrying DNA Derivatives, 25 J Biomat. Sci, Polymer Ed. 1461 (Year: 2014). cited by examiner ; Gang Han, et al., Advanced Anti-Fouling Membranes for Osmotic Powder Generation from Wastewater via Pressure Retarded Osmosis, 52 Environ. Sci. Technol. 6686 (Year: 2018). cited by examiner ; International Search Report for PCT/JP2018/044333, dated Feb. 19, 2019. cited by applicant Primary Examiner: Basquill, Sean M Attorney, Agent or Firm: Sughrue Mion, PLLC

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Soft contact lens treatment solution