Glyptal:-
- Glyptal is an alkyl resin.
- Alkyd resins are polyesters that contain dibasic acids, polyols, and fatty acids.
- They belong to a thermosetting polymer.
- Glyptal is a polyester of ethylene glycol and phthalic acid.
- The structure of glyptal is
![](https://byjus-answer-creation.s3.amazonaws.com/uploads/image.png_img_upload_solution_2022-05-20 08:00:56.540115.png)
Therefore, glyptal is a alkyd resin which is a polymer of ethylene glycol and phthalic acid.