Contact lens treatment solution

Patent metadata

Field	Value
Publication number	US-11912964-B2
Application number	US-201917275955-A
Country	US
Kind code	B2
Filing date	Sep 11, 2019
Priority date	Sep 18, 2018
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

The present invention is a contact lens treatment solution containing the following copolymer A and copolymer B in a ratio of A/B=1000/1 to 2/1 (by weight). According to the present invention, there can be provided a contact lens treatment solution capable of removing dirt having adhered to contact lens surfaces and capable of imparting persisting hydrophilicity to contact lens surfaces, by simple immersion treatment.Copolymer A: a copolymer obtained by copolymerization of a monomer (a) represented by formula (1) and a monomer (b) represented by formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=7/3 to 9/1 (by mol), and having a weight-average molecular weight of 400,000 to 700,000.Copolymer B: a copolymer obtained by copolymerization of a monomer (c) represented by formula (3) and a monomer (d) represented by formula (4), in which the copolymerization ratio of the monomer (c) to the monomer (d), c/d=1/4 to 9/1 (by mol), and having a weight-average molecular weight of 20,000 to 90,000.

First claim

The invention claimed is:

1. A contact lens treatment solution comprising the following copolymer A and copolymer B in a ratio of A/B=1000/1 to 2/1 by weight:
Copolymer A: a copolymer obtained by copolymerization of a monomer (a) represented by the following formula (1) and a monomer (b) represented by the following formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=7/3 to 9/1 by mol, and having a weight-average molecular weight of 400,000 to 700,000;
Copolymer B; a copolymer obtained by copolymerization of a monomer (c) represented by the following formula (3) and a monomer (d) represented by the following formula (4), in which the copolymerization ratio of the monomer (c) to the monomer (d), c/d=1/4 to 9/1 by mol, and having a weight-average molecular weight of 20,000 to 90,000;

wherein R 1 represents a hydrogen atom or a methyl group;

wherein R 2 represents a hydrogen atom or a methyl group, and R 3 represents an alkyl group having 2 to 6 carbon atoms;

wherein R 4 represents a hydrogen atom or a methyl group, and n represents an integer of 1 to 4,

wherein R 5 represents a hydrogen atom or a methyl group, and R 6 represents a hydrocarbon group having 8 to 22 carbon atoms.

2. A method of treating a contact lens, said method comprising contacting said contact lens with the treatment solution of claim 1 .

Assignees

• Nof Corp

Inventors

• Suzuki Hirotaka
• Kawasaki Hiroko
• Sakurai Shunsuke

Classifications

• C11D3/3784 Primary

  (Co)polymerised monomers containing phosphorus · CPC title

• C08F120/36

  containing oxygen in addition to the carboxy oxygen {, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate} · CPC title

• C11D3/26

  containing nitrogen {(C11D3/162, C11D3/164, C11D3/166, C11D3/168 take precedence)} · CPC title

• C11D3/30

  Amines; Substituted amines {; Quaternized amines} · CPC title

• C11D3/36

  containing phosphorus {(C11D3/162, C11D3/164, C11D3/166, C11D3/168 take precedence)} · CPC title