Laropal A 81
Laropal A 81, which is manufactured by BASF, is a condensation product of urea and aliphatic aldehydes. This pale, yellowing-resistant aldehyde resin is soluble in almost all paint solvents and compatible with practically all coatings materials.
Laropal A 81, which BASF manufactures, is a condensation product of urea and aliphatic aldehydes. This low molecular weight resin comes in the form of small pale color pellets. It has a glass transition temperature (Tg) of 57 °C. It is very pale color, and good pigment-wetting are two properties that make Laropal A 81 particularly suitable for producing all-purpose pigment preparations. The low viscosity of its solutions enables high-pigment content pastes to be produced.
This pale, yellowing-resistant aldehyde resin is soluble in almost all paint solvents and compatible with practically all coatings materials. Its main uses are a combination with other resin binders and the production of all-purpose pigment paste.
| Properties | ||
| Property | Unit | Amount |
| Softening range (DIN 53180) | °C | 80–95 |
| Iodine color (DIN 6162) | Max. 3 | |
| Acid value (ISO 3682, DIN 53402) | mg KOH/g | Max. 3 |
| Density @ 20 °C (ISO 2811, DIN 53217) | g/cm3 | Approx. 1.11 |
| Hydroxyl value (ISO 4629) | mg KOH/g | Approx. 40 |
| Saponification value (ISO 3681, DIN 53401) | mg KOH/g | Approx. 50 |
| Glass transition temperature Tg (DSC) | °C | Approx. 57 |
Occasional slight fluctuations in color are unavoidable but do not affect the product’s performance characteristics.
Solubility
Laropal A 81 is soluble in all common paint solvents but insoluble in water. Its solubility/diluent tolerance in aliphatic solvents such as mineral spirit is limited. Such solutions tend to separate, particularly at temperatures below 15 °C but can be stabilized by adding 2–5% of an aromatic solvent (i.e., Solvesso® 100 or Aromatic 100).
Please note that Laropal A 81 does not dissolve in odorless mineral spirits. It dissolves only in aromatic solvents, including xylene, toluene, Aromatic 100, and aliphatic solvents, such as mineral spirits, with an aromatic content greater than 20%.
For your convenience, we have provided the correct solvent for Laropal A 81: Laropal Solvent.
Compatibility
Laropal A 81 is compatible with many coatings materials, including:
alkyd resins
cellulose nitrate
cellulose acetobutyrate
vinyl chloride copolymers
chlorinated rubber
hydroxypolyacrylates
melamine-formaldehyde resins
aromatic and aliphatic epoxy resins
hydrocarbon resins
phthalate plasticizers
Applications
Due to its very pale color and excellent aging stability, Laropal A 81 is used as a resin in picture varnishes when dissolved in an aromatic solvent.
Laropal A 81’s excellent solubility and compatibility enable it to be used in many paints. It can be used to improve gloss, hardness, body, adhesion, and yellowing resistance, depending on the coating’s intended application.
A very pale color and good pigment-wetting are two properties that make Laropal A 81 particularly suitable for producing all-purpose pigment preparations. The low viscosity of its solutions enables high-pigment-content pastes to be produced.
Since it has good heat resistance, Laropal A 81 is also used for baking finishes, mainly because it does not cause any odors or discoloration of the resin.
| SKU | 510-33LA |
|---|---|
| Brand | Rublev Colours |
| Vendor | Rublev Colours |
| Processing Time | Usually ships the next business day. |
Order Processing
If the Processing Time for items in your order is "Usually ships within 24-48 hours", your order will usually be processed within 48 hours of receipt Monday through Friday. Orders received during weekends and holidays will be processed on the next business (working) day. Orders with longer processing times will be shipped when all items become available.
Shipping Rates
Please add your desired items and the delivery address to your basket to determine the exact shipping costs and options. The table below provides shipping rates for different weights to the countries we ship to.
Carriers
We use the following carriers to deliver orders:
 |  |  |
Below is an approximate guide to shipping costs for locations in Europe. Rates may change without notice.
| COUNTRY | ALPHA-2 | RATES PER PARCELS | CARRIER | |
| 0–10 kg | >10 kg–30 kg | |||
| Austria | AT | 11,50 € | 11,50 € | DPD |
| Belgium | BE | 10,95 € | 10,95 € | DPD |
| Bulgaria | BG | 20,25 € | 30,25 € | FedEx |
| Bosnia and Herzegovina | BA | 49,25 € | 49,25 € | DPD |
| Cyprus | CY | 21,80 € | 29,30 € | FedEx |
| Switzerland | CH | 25,85 € | 42,98 € | FedEx |
| Czech Republic | CZ | 12,00 € | 12,00 € | DPD |
| Germany | DE | 5,50 € | 5,50 € | DPD |
| Denmark | DK | 12,00 € | 12,00 € | DPD |
| Spain | ES | 17,48 € | 28,50 € | FedEx |
| Estonia | EE | 21,70 € | 21,70 € | DPD |
| Finland | FI | 17,48 € | 28,50 € | FedEx |
| France | FR | 14,60 € | 14,60 € | DPD |
| United Kingdom | GB | – € | – € | – |
| Greece | GR | 17,48 € | 28,50 € | FedEx |
| Croatia | HR | 29,25 € | 29,25 € | DPD |
| Hungary | HU | 15,90 € | 15,90 € | DPD |
| Ireland | IE | 17,48 € | 28,50 € | FedEx |
| Iceland | IS | 30,70 € | 62,40 € | DHL |
| Italy | IT | 15,90 € | 15,90 € | DPD |
| Liechtenstein | LI | 25,85 € | 43,00 € | FedEx |
| Lithuania | LT | 21,70 € | 21,70 € | DPD |
| Luxembourg | LU | 10,95 € | 10,95 € | DPD |
| Latvia | LV | 21,70 € | 21,70 € | DPD |
| Malta | MT | 21,80 € | 30,25 € | FedEx |
| Monaco | MC | 15,95 € | 24,30 € | FedEx |
| Netherlands | NL | 10,95 € | 10,95 € | DPD |
| Norway | NO | 25,85 € | 43,00 € | FedEx |
| Poland | PL | 14,90 € | 14,90 € | DPD |
| Portugal | PT | 15,50 € | 15,50 € | DPD |
| Romania | RO | 21,80 € | 30,25 € | FedEx |
| Serbia | RS | 49,25 € | 49,25 € | DPD |
| Slovakia | SK | 15,90 € | 15,90 € | DPD |
| Slovenia | SI | 15,90 € | 15,90 € | DPD |
| Sweden | SE | 15,90 € | 15,90 € | DPD |
| Turkey | TR | 27,30 € | 46,20 € | FedEx |
Note: Countries in RED type are not members of the European Union.
Postal Service
Shipping (EU and non-EU countries):
Up to 500 grams Tracked: 6,85 €
Up to 1000 grams Tracked: 10,45 €
Up to 2000 grams Tracked: 20,50 €
Tracking
For tracking details, please log in to your Natural Pigments account.
We track all orders where a tracked delivery service has been selected.
We will update your order with the tracking information if the shipping carrier provides a tracking number. You can locate the tracking number for your order in the shipping confirmation email you receive when your order is shipped. (Look for the email with the subject line "Natural Pigments: Shipment # xxxxxxxxx for Order # xxxxxxxxx.") You can also find the tracking number by signing into your account and visiting My Account Dashboard under Recent Orders.
VAT for Orders within the European Union
VAT is not included in prices unless specified on the website as VAT INCLUSIVE. VAT is calculated for Germany at 19% on both order subtotal and shipping cost and is added to the order grand total.
VAT, Duties, and Tariffs for Orders Outside of the European Union
VAT is not included in prices and totals unless specified on the website as VAT INCLUSIVE. Duties, tariffs, and customs broker fees are not included in the prices and totals on the website. These charges are in addition to what you will pay when ordering. These charges originate in the delivery country, so please contact your local customs for more information.
Shipping Rates
The rate charged for the shipping of your order is based on the weight of your products and your location. Before the final checkout page, you will be shown what the shipping cost will be, and you will have a chance to abandon your order if you decide not to place it.
Shipping Damage
For shipping damage, customers should file a claim with the carrier immediately. Any discrepancy, including wrong or missing items, should be reported to Natural Pigments within twenty-four (24) hours of receipt.
Back Orders
We do not accept backorders for out-of-stock items. If you order an out-of-stock item, we will email you when we expect that product to be available. You will be among the first to receive the item when it becomes available. Natural Pigments will not charge your credit card for out-of-stock items.
