$10.14
CLICK THE "LEARN MORE ABOUT THIS ITEM" LINK JUST BELOW TO READ THE FULL DESCRIPTION FOR THIS ITEM.
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PROMPT REBATE ON ORDERS WITH 3 OR MORE “FreeShip” ITEMS! WANT TO KNOW YOUR TOTAL REBATE BEFORE PURCHASE? CONTACT US!
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https://www.etsy.com/shop/NorthernWestStuff?ref=hdr_shop_menu&search_query=paraloid
Please note not all sizes are pictured.
This is a polyvinyl butyral resin intended to be used as a coating or adhesive by dissolving the powdered resin into an appropriate solvent. It's the same method of use as the Paraloid line of acrylic resins that are widely known and used by artists and museum conservators/restorers.
The Cameo database, which has "terms, materials, and techniques used in the fields of art conservation and historic preservation" says this about the resin:
"A thermoplastic resin made by the condensation of polyvinyl alcohol with butyraldehyde. Polyvinyl butyral is a colorless, flexible tough solid. It is used in sheet form as the center adhesive layer in safety glass. It is also used to waterproof textiles. Polyvinyl butyral is weather resistant...Soluble in alcohols, acetone, aromatic hydrocarbons."
Eastman, the manufacturer says:
"Butvar®.....is a thermoplastic, polyvinyl butyral resin which offers a unique combination of properties for coating or adhesive applications. The use or addition of polyvinyl butyral to a system imparts adhesion, toughness, and flexibility. PVB retains the clarity of the coating and offers reactive hydroxyl sites for crosslinking with thermoset [resins]." Some uses are suggested:
"-Binders for adhesives and structural composites-
-Binders for inks and toners-
-Wash primers and general metal or wood coatings-"
Generally more flexible than Paraloid acrylics (although some acrylic copolymers offer good flexibility) and tougher, but still offering excellent optical clarity, and some resistance to UV in sunlight and to heat, they are an excellent choice for preserving and restoring textiles, and indeed are widely used for that purpose. They possess excellent binding efficiency to a wide variety of surfaces when used as adhesives. That, and their above qualities make them an excellent choice for picture varnishes.
There are several grades of this resin that differ in molecular weight and viscosity when in a given solution. The B-90 is a middle of the road choice, having a molecular weight of 70-100, and a viscosity of 600 to 1200 cps in a 15% solution. The resin is soluble in alcohols, acetone, aromatic hydrocarbons, glycol ethers, and other polar and non-polar mixtures. It is supplied as a white free-flowing powder.
The product page for Butvar B-90 is here:
http://www.eastman.com/Products/Pages/ProductHome.aspx?Product=71095421&list=products
Please note that over the years the best information has changed to the following link:
A link with more info on the various types of Butvar (with viscosities given at a 10% and 15% solution and other data is here:
https://silo.tips/download/butvar-polyvinyl-butyral-resin-properties-and-uses
There you will find links to the Tech Data Sheet, the MSDS, and to general and specialty use bulletins such as ceramic binders.-
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1-2 business days
I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.
Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.
But please contact me if you have any problems with your order.
We're sorry, but at this time we do not ship internationally.
If you would like a smaller or larger quantity of a raw material, click the "Request a custom order" button and tell us how much you would like. Or just contact us and let us know what you'd like. We'll get back to you ASAP.
This problem usually occurs with multiple items. We have free shipping on many of our items. In your cart items will have the sum of all embedded shipping costs. If you place an order for 3 or more "FreeShip" items, you will receive a "rebate" for the excess shipping. The more items you have the greater the shipping refund will be. You can also message us to ask what the total cost of your order will be when excess shipping is refunded before you purchase.
Or, if you see "Request a Custom Order" or "Message Seller", you can request a custom order and your items will be put in a custom listing with the correct shipping. You would purchase it like any other listing.
If you have a technical question about an item we've listed, please don't hesitate to ask. We enjoy helping people out with a material or a process.
We give anecdotal information in our listings if we have any. If you disagree with it or think we're being inaccurate or misleading please let us know that, too.
If there are discrepancies in any of our listings let us know, we make mistakes like everybody and we'd like to be set straight and get those mistakes corrected.
Apr 12, 2024
Prompt shipping and exactly as pictured!
Ken Schug
Jan 25, 2024
Excellent quality Paraloid and Butvar resins!! Pricing is fantastic on all products!! Shipping was super fast. Wonderful customer service!! Excited to shop here again soon!!
Marianne
Oct 2, 2023
Seller is very knowledgeable about a lot of materials
Jason Bosh
Sep 11, 2023
Fast shipping, amazing value, and great communication from seller!
dawnsagecreek
Jan 22, 2023
This product is exactly what I needed to coat some dinosaur teeth and it worked beautifully. The best part of this purchase was when I ordered two bags of 50 g a piece, but when they saw the order of two bags of 50 g they sent me a single bag of 100 g for six dollars less because on the site it had indicated all they had left were the 50 g bags. When you get that kind of honest customer service, you know you've gone to the right place. so I definitely recommend it, and and I will definitely return for future purchases!
Salvador