Adhesive for endoscope and cured product thereof, and endoscope and method for producing the same

Patent metadata

Field	Value
Publication number	US-12054650-B2
Application number	US-202117144393-A
Country	US
Kind code	B2
Filing date	Jan 8, 2021
Priority date	Jul 10, 2018
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

Provided are an adhesive for an endoscope and a cured product thereof. The adhesive for an endoscope includes an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin, a polyamine compound, and an alcohol compound. Also provided are an endoscope in which the cured product is fixed and a method for producing the endoscope.

First claim

What is claimed is:

1. An adhesive for an endoscope, comprising:
an epoxy resin including at least one of a bisphenol A epoxy resin, a bisphenol F epoxy resin, or a phenol novolac epoxy resin;
a polyamine compound; and
an alcohol compound,
wherein the alcohol compound is a polymer and has a number average molecular weight of 2,000 to 100,000.

2. The adhesive for an endoscope according to claim 1 , wherein the alcohol compound has a hydroxyl equivalent of 25 to 150.

3. The adhesive for an endoscope according to claim 1 , wherein the alcohol compound has a CLogP of −1.5 to 3.5.

4. The adhesive for an endoscope according to claim 1 , wherein the alcohol compound is a polyol compound.

5. The adhesive for an endoscope according to claim 1 , wherein the polyamine compound has an active hydrogen equivalent of 10 to 2,000.

6. The adhesive for an endoscope according to claim 1 , wherein the polyamine compound has a polyoxyalkylene structure.

7. The adhesive for an endoscope according to claim 1 , wherein, relative to 100 parts by mass of a content of the epoxy resin, a content of the polyamine compound is 5 to 60 parts by mass, and a content of the alcohol compound is 1 to 20 parts by mass.

8. A cured product formed by curing the adhesive for an endoscope according to claim 1 .

9. An endoscope comprising the cured product according to claim 8 and a constituent member fixed with the cured product.

10. A method for producing an endoscope, the method comprising fixing a constituent member by using the adhesive for an endoscope according to claim 1 .

Assignees

• Fujifilm Corp

Inventors

• Furukawa Kazushi
• Nakai Yoshihiro

Classifications

• C09J11/06

  organic · CPC title

• A61B1/0011

  Manufacturing of endoscope parts · CPC title

• C08G59/68

  characterised by the catalysts used · CPC title

• C08G59/5026

  cycloaliphatic · CPC title

• C08G59/5006

  aliphatic · CPC title