refined cotton by alkaline treatment and then by a series of reactions with propylene epoxide and methyl chloride as etherifying agents. Hydroxypropyl Methylcellulose is non-ionic cellulose mixed ether made from refined cotton .
Hydroxypropyl cellulose (HPC) is a derivative of cellulose with both water solubility and organic solubility. It is used as a topical ophthalmic protectant and lubricant. When this occurs, the number of moles of hydroxypropyl groups per glucose ring, moles of substitution (MS), can be higher than 3. Because cellulose is very crystalline, HPC must have an MS about 4 in order to reach a good solubility in water. For hydroxypropyl methylcellulose (HPMC) products (METHOCEL™ E, F, J, and K brand products), propylene oxide is used in addition to methyl chloride to obtain hydroxypropyl substitution on the anhydroglucose units.  Vegetable based capsules are manufactured from HPMC. or hydroxypropyl methylcellulose. HPMC is basically s semisynthetic inert material consisting of purified water and plant fiber, or cellulose.  All types of Qualicaps ® capsules are gluten-free and can be taken safely by people on special diets. Gluten is a protein found in wheat, rye, barley and oat products, none of which are used in the manufacture of two-piece capsules. Hypromellose is the official Pharmacopeia name for hydroxypropyl methylcellulose (HPMC). It is a cellulose derivative made from plants and is used to make capsules without using materials of animal origin. Qualicaps®’ Quali-V® capsules are made using hypromellose.  These 10 facts about space will blow your mind. Hydroxypropyl methyl cellulose (HPMC) is a polymer used for multiple applications in fields such as construction and ophthalmology. It is also known as hypromellose, which is the international, non-proprietary name (INN) for this substance. One of the most important properties of hydroxypropyl methyl cellulose is that, in a water-based solution, it does not have a gelation property when heated. Instead of precipitating out as methylcellulose does, it causes the entire solution to congeal into a semi-flexible mass that can no longer flow. HYDROXYPROPYL METHYLCELLULOSE HPMC VS MC. Hydroxypropyl Methylcellulose is non-ionic cellulose mixed ether made from refined cotton by alkaline treatment and then by a series of reactions with propylene epoxide and methyl chloride as etherifying agents. The degree of substitution is generally 1.2-2.0. 1. Hydroxypropyl Methylcellulose is easily soluble in cold water but difficult to be soluble in hot water. However, its gelling temperature in hot water is significantly higher than that of Methyl Cellulose (MC). And compared with MC, the dissolution in cold water has also been greatly improved. 2. Application. (Hydroxypropyl)methyl cellulose (HPMC), an inert viscoelastic polymer is used as an emulsifier, thickening and suspending agent similar to animal gelatin. HPMC is used in the development of controlled-delivery medicament.  Recently, hydroxypropyl methylcellulose (HPMC) has been made available. as an alternative to gelatin for the manufacture of two-piece hard capsules. Solaiman, Amanda (2010) Properties of Capsule Shells made from Hydroxypropyl Methylcellulose (Hypromellose). For other uses, see HPMC (disambiguation) . Hypromellose (INN), short for hydroxypropyl methylcellulose (HPMC), is a semisynthetic, inert, viscoelastic polymer used as an ophthalmic lubricant, as well as an excipient and controlled-delivery component in oral medicaments, found in a variety of commercial products. Hypromellose is a solid, and is a slightly off-white to beige powder in appearance and may be formed into granules. The compound forms colloids when dissolved in water. This non-toxic ingredient is combustible and can react vigorously with oxidising agents.
https://en.wikipedia.org/wiki/Hydroxypropyl_cellulose http://www.dow.com/dowwolff/en/industrial_solutions/polymers/hydroxypropyl-methylcellulose/ http://www.answers.com/Q/What_are_vegetarian_capsules_made_of http://qualicaps.com/resources/frequently-asked-questions/ http://www.wisegeek.org/what-is-hydroxypropyl-methyl-cellulose.htm http://celluloseether.com/hydroxypropyl-methylcellulose-hpmc-methyl-cellulose/ http://www.sigmaaldrich.com/catalog/product/sigma/56340?lang=en&region=US http://sure.sunderland.ac.uk/3779/ https://en.wikipedia.org/wiki/Hypromellose
what is hydroxypropyl methylcellulose made from