What are resins in pharmacognosy?

What are resins in pharmacognosy?

In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on naturally occurring resins.

What are the three types of resins based on the methods of preparation?

Types of Resins

  • Thermoplastic Resins. A substance that softens when heated and when cooled, it hardens again.
  • Thermosetting Resins.
  • Condensation Polymerisation.
  • Addition Polymerisation.
  • Surface Coatings – Paints & Printing Inks.
  • Electrical Insulation – Wire Enamels.
  • Foundry.
  • Packaging.

How many different types of resin are there?

There are three main types of Resins used today for use with Carbon Fiber, Fiberglass, and Aramid (Kevlar). These are Epoxy, Vinylester, Polyester Resins. Each has different characteristics and associated costs.

What are resins used for?

Resins are widely used in building as adhesives, coatings or as a construction material when a strong bond is required. For example, for laminated wood construction. Resins are also popular in the decoration of self-leveling floors and architectural surfaces enabling to use of recycled materials.

What is resin jewelry?

Resin jewelry is any type of jewelry that is made with resin—although pendants and earrings are most popular. When objects like flowers, glitter, beads, or gemstones are solidified within the resin, the process is called casting.

What are resins classify them with suitable example?

They are found inside plants or are exuded by plants, such as sap, latex, or mucilage forms. Some examples of plant source resins are Asafoetida, Myrrh, Balsam, Benzoin, Ginger, Colophony, Jalap, Podophyllum, etc. Some examples of animal source resins are Shellac or Lac.

Which is the example of acid resins in pharmacognosy?

Examples of such types of Resins are guggul, asafoetida, and myrrh. These types of Resin are a mixture of benzoic acid and cinnamic acid or esters of these acids. It can occur in free or combined form. Examples of such types of Resins are benzoin, tolu balsam, Peru balsam.

What are resins give their classification?

CLASSIFICATION OF RESINS  Resins are classified in three different ways: 1. Taxonomical classification, i.e. according to botanical origin, e.g. Berberidaceae resins. 2. Classification according to predominating chemical constituent; e.g. acid resins, resene resins, glycosidal resins; etc.

Which resin is best for jewelry?

The Best Resin for Jewelry

  • Epoxy resin has a beautiful, crystal clear surface and is therefore ideal for the production of jewelry and accessories.
  • Polyester resin dries very quickly and is also extremely robust.

What type of resin is best?

What is the best epoxy resin?

  • Dr Crafty crystal clear epoxy resin.
  • The Epoxy Resin Store premium quality clear epoxy resin.
  • Amazing Clear Cast alumilite clear coating and casting resin.
  • Dr Crafty full clear epoxy resin kit.
  • Art Resin one gallon epoxy resin.
  • HXDZFX epoxy resin coating with resin and hardener.

What is resin made of in jewelry?

Epoxy resin jewelry, or just resin jewelry, are decorative pieces of jewelry that are made of Epoxy Resin. Resin is a material that works by means of a two-component system. Resin and hardener are mixed together and solidifies afterward to a very hard and crystal clear plastic.

What is colophony resin?

Colophony is a solid resin prepared by distilling off the volatile oil from the oleoresin obtained from various species of Pinus (Family Pinaceae). Pine trees growing in North America, Cuba, Maritime Alps and India serve as the main sources of Colophony.

What is the classification of resin based on its association with gums?

Accordingly, other simple classification based on the association of resin with gums and/or volatile oils is given below. Oleoresins are the homogenous mixture of resin with vola-tile oils. The oleoresins posses an essence due to volatile oils. A trace amount of gummy material may sometimes be found in oleoresins.

What are resin resins?

Resins are regarded as end products of destructive metabolism. They occur in special ducts or cavities in plant tissues. When dry they are usually hard, transparent or translucent amorphous solids, which readily fuse upon heating. Chemically, they are complex mixtures of acids, alcohols and esters.

What is a 2 quart jar of epoxy resin?

This epoxy resin comes in a 2-quart jar for covering a variety of projects with ease. It’s great to use on metal, wood, plastics, and many other surfaces and can be used for molding, painting, and even jewelry. This epoxy resin comes in a 2-quart jar for covering a variety of projects with ease.