vinyl alcohol supplier in kolkata
Poly(vinyl alcohol) (PVOH, PVA, or PVAl) is a water-soluble synthetic polymer. It has the idealized formula [CH2CH(OH)]n. It is used in papermaking, textiles, and a variety of coatings. It is white (colourless) and odorless. It is sometimes supplied as beads or as solutions in water.
Uses
Other uses of polyvinyl alcohol include:
Injection moulding of soluble containers for active release of detergents and agrichemicals
Paper adhesive with boric acid in spiral tube winding and solid board production
Thickener, modifier, in polyvinyl acetate glues
Textile sizing agent
Paper coatings, release liner
As a water-soluble film useful for packaging. An example is the envelope containing laundry detergent in "liqui-tabs".
Feminine hygiene and adult incontinence products as a biodegradable plastic backing sheet.
Carbon dioxide barrier in polyethylene terephthalate (PET) bottles
As a film used in the water transfer printing process
As a form release because materials such as epoxy do not stick to it
Movie practical effect and children's play putty or slime when combined with borax
Used in eye drops (such as artificial tears to treat dry eyes) and hard contact lens solution as a lubricant
PVA fiber, as reinforcement in concrete
Raw material to polyvinyl nitrate (PVN) an ester of nitric acid and polyvinyl alcohol.
As a surfactant for the formation of polymer encapsulated nanobeads
Used in protective chemical-resistant gloves
Used as a fixative for specimen collection, especially stool samples
When doped with iodine, PVA can be used to polarize light
As an embolization agent in medical procedures
Carotid phantoms for use as synthetic vessels in Doppler flow testing
Used in 3D printing as support structure that can then be dissolved away (cire perdue).
ther names
PVOH;
Poly(Ethenol),
Ethenol,
homopolymer;
PVA;
Polyviol;
Vinol;
Alvyl;
Alcotex;
Covol;
Gelvatol;
Lemol;
Mowiol;
Mowiflex,
Alcotex,
Elvanol,
Gelvatol,
Lemol,
Mowiol
, Nelfilcon A,
Polyviol und Rhodoviol