Water-soluble film former
Dissolves in water and dries to strong, óleo- and solvent-resistant films.
Álcool polivinílico (PVA) is a water-soluble polymer used for fibers and in large quantities in coatings, adesivos, paper processing, textile sizing and emulsion polymerization. SUNCHEM supplies PVA grades with a batch COA on every shipment.
PVA is made by hydrolyzing polyvinyl acetate. It dissolves in water to form a stable colloid and forms strong, oil-resistant films, with properties between plastics and rubber. Besides fiber (vinylon), it is used in coatings and building adhesives, paper sizing and coating, textile warp sizing, as a protective colloid in emulsion polymerization (PVAc and VAE), and as a raw material for PVB and water-soluble film.
Grades are defined by degree of hydrolysis and viscosity (degree of polymerization). Tell us the grade you use now so we quote the equivalent.
Dissolves in water and dries to strong, óleo- and solvent-resistant films.
Binds pigments and fibers and stabilizes emulsions as a protective colloid.
We quote against your hydrolysis, viscosity and volatile limits and send the batch COA for each lot.
| Parâmetro | Valor típico |
|---|---|
| Nome do produto | Álcool Polivinílico |
| Sinônimos | PVA; PVOH; poli(álcool vinílico) |
| Nº CAS. | 9002-89-5 |
| Fórmula | (C₂H₄O)n |
| Aparência | White to cream granules, powder or flakes |
| Notas | Defined by degree of hydrolysis and viscosity |
Degree of hydrolysis, viscosidade (4% solução), voláteis, ash and pH limits depend on the producer grade and are stated on the TDS and batch COA; os limites do seu pedido estão confirmados na cotação e no contrato.
Where PVA is used, e o que confirmar antes de trocar de fornecimento.
A binder in building adhesives, putty, coatings and paper glues.
Used for paper surface sizing and coating and for textile warp sizing.
Stabilizes PVAc and VAE emulsions during polymerization.
A raw material for vinylon fiber, PVB resin and water-soluble film.
| Sua necessidade | O que geralmente funciona |
|---|---|
| Building adhesives and putty | Fully hydrolyzed grade; viscosity to suit the formulation |
| Emulsion polymerization | Partially hydrolyzed grade as protective colloid |
| Paper and textile sizing | Match the grade and viscosity you use now |
| Substituindo um fornecedor existente | Envie seu TDS ou COA atual; cotamos de acordo com os parâmetros que você aprova |
Tell us the bag size and pallet requirements you need; we confirm the packaging with the quotation.
Keep bags closed in a dry store; PVA absorbs moisture.
Adesivo, papel, têxtil, emulsion or fiber: hydrolysis and viscosity follow from it.
Degree of hydrolysis, viscosity of a 4% solução, voláteis, ash and pH.
Dissolve a sample in your own plant conditions; fully hydrolyzed grades need hot water.
Execute uma amostra em seu próprio processo e mantenha o COA do lote aprovado como referência para os limites do contrato.
Tell us your application and the PVA grade you use now, a quantidade e o porto de destino. Adicione sua especificação atual e faremos uma cotação com base nela.
| Informação | Exemplo |
|---|---|
| Aplicativo | Adesivos, papel, textile sizing, emulsões, fibra |
| Especificação necessária | Hydrolysis %, viscosidade |
| Embalagem | Bag size; pallets |
| Quantidade | Amostra / ordem de teste / volume anual |
| Destino | País e porto |
| Documentos necessários | COA, FDS, TDS, Declaração REACH |
For fibers and in large quantities in coatings, adesivos, paper processing, textile sizing, polimerização em emulsão, PVB and water-soluble film.
By degree of hydrolysis (partially or fully hydrolyzed) and viscosity, which reflects the degree of polymerization.
Degree of hydrolysis, viscosidade, voláteis, ash and pH.
Não. It is not regulated as dangerous goods for transport; see the SDS for handling.