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755885

Sigma-Aldrich

Urethane acrylate methacrylate resin

Sinónimos:

MAU, U-835

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About This Item

Código UNSPSC:
12162002
NACRES:
NA.23
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Formulario

liquid

Nivel de calidad

100

índice de refracción

n20/D 1.487

viscosidad

3,000 cP(25 °C)

densidad

0.995 g/mL at 25 °C

temp. de almacenamiento

2-8°C

Descripción general

Urethane acrylate methacrylate resin (UDMA) is formed by reacting 2,4,4-trimethylhexamethylene diisocyanate and 2-hydroxyethyl methacrylate (HEMA). It is mainly used as a dental resin with a higher water uptake than that of bisphenol A-glycidyl methacrylate (Bis-GMA).[1]

Aplicación

UDMA may be combined with triethylene glycol dimethacrylate (TEGDMA) as a resin to develop composite blocks, which can be used for dental computer aided design applications.[2] It may also be used to decrease the water sorption and increase the mechanical strength of the dental composites.[3]

Pictogramas

Exclamation mark
GHS07

Palabra de señalización

Warning

Clasificaciones de peligro

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

10 - Combustible liquids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

>399.2 °F

Punto de inflamabilidad (°C)

> 204 °C

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Certificados de análisis (COA)

Lot/Batch Number
MKCW2000
MKCR2202
MKCM3835
MKCH6224
MKCD8648

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Dipentaerythritol penta-/hexa-acrylate contains ≤650 ppm MEHQ as inhibitor

Sigma-Aldrich

407283

Dipentaerythritol penta-/hexa-acrylate

Urethane ≥99%

Sigma-Aldrich

U2500

Urethane

Properties of experimental urethane dimethacrylate-based dental resin composite blocks obtained via thermo-polymerization under high pressure.
Nguyen J, et al.
Dental Materials : Official Publication of the Academy of Dental Materials, 29(5), 535-541 (2013)
Water ageing of urethane dimethacrylate networks.
Pomes B, et al.
Polymer Degradation and Stability, 29(5), 535-541 (2018)
Synthesis and evaluation of modified urethane dimethacrylate resins with reduced water sorption and solubility.
Kerby RE, et al.
Dental Materials : Official Publication of the Academy of Dental Materials, 25(3), 302-313 (2009)

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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