UV Absorbers

UV Absorbers

Mayzo provides a variety of UV absorbers, which are useful to protect adhesives, plastics, coatings, and elastomers from the damaging effects of outdoor weathering that result from exposure to ultraviolet light. As their name implies, these additives function by competitive absorption of damaging UV light. Combinations of UV absorbers with other kinds of light stabilizers (for example hindered amine light stabilizers, or HALS) are often used in order to attain the best resistance to weathering.


BLS® 99-2

Overview

BLS 99-2 is a liquid benzotriazole UV absorber that provides outstanding light stability to industrial and automotive coatings.  As a liquid, BLS 99-2 blends easily and disperses completely, resulting in lower loading requirements, and virtually eliminating the particle dispersion problems associated with conventional powder UV absorbers.  The liquid form also allows for outstanding compatibility with a wide variety of coating systems, including waterborne and solvent-based coatings.

Chemistry

Chemical Names:                   95% Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)

                                                 -4-hydroxy-, C7-9-branched and linear alkyl esters 5% 2-Propanol,

1-methoxy-, 2-acetate

CAS Numbers:                        127519-17-9; 108-65-6

Chemical Structure:

BLS® 99-2

Typical Properties         

Product Form:                         Liquid

Product Details: Please view our  BLS 99-2 PDF

BLS 234

Overview

BLS 234 is a low volatile, benzotriazole type, ultraviolet light absorber (UVA), which is highly effective for polymers being processed at high temperatures.   BLS 234 is especially suited for polycarbonates and polyesters.  It protects the polymers from UV radiation helping to preserve the original appearance and physical integrity.

Chemistry

Chemical Name:                     2-[2-hydroxy-3,5-di-(1,1-dimethylbenzyl)]-2H-benzotriazole

CAS Number:                          70321-86-7

Chemical Structure:

BLS 234

Typical Properties         

 Product Form:                        Solid

Melting Point:                         137-141oC

Molecular Weight:                  447.6 g/mol

Product Details: Please view our BLS 234 PDF

BLS 531

Overview

BLS 531 is an ultraviolet light absorber (UVA) of the benzophenone class, imparting good light stability for plastics and other organic polymers.  Due to its highly effective broad UV absorption properties and excellent polymer compatibility, BLS 531 offers maximum polymer protection and low color contribution, retards yellowing and loss of physical properties

Chemistry

Chemical Name:                     2-Hydroxy-4-n-Octoxybenzophenone

CAS Number:                          1843-05-6

Chemical Structure:

BLS 531

Typical Properties         

Product Form:                         Solid

Melting Point:                          46.5-49oC

Molecular Weight:                   326 g/mol

Product Details: Please view our  BLS 531 PDF

 

BLS 1130

Overview

BLS 1130 is a liquid benzotriazole UV absorber that provides outstanding light stability to industrial and automotive coatings.  It blends easily and disperses completely, reducing loading requirements and virtually eliminating particle dispersion problems associated with solid UV absorbers.  The liquid form is also highly compatible with a wide variety of coating systems, including waterborne and solvent-based systems.  BLS 1130 is also useful as a light stabilizer in other applications including plastics, adhesives, and sealants.

Chemistry (Active Components)

Chemical Names:                    Poly(oxy-1,2-ethanediyl), α-[3-[3-(2H-benzotriazol-2-yl)

 -5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropyl]-ω-hydroxy-;

 Poly(oxy-1,2-ethanediyl), α-[3-[3-(2H-benzotriazol-2-yl)

 -5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropyl]

 -ω-[3-[3-(2Hbenzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]

 -1-oxopropoxy]-

CAS Numbers:                         104810-48-2

 104810-47-1

Chemical Structures:               ~50%

 BLS 1130a

  ~38%

  BLS 1130b

Typical Properties

Product Form:                                   Liquid

Molecular Weight:                            Mixture

Product Details: Please view our  BLS 1130 PDF

BLS 1326

Overview

BLS 1326 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers.  BLS 1326 is especially suited for polyolefins and cold cured polyesters.  It protects polymers from UV radiation helping to preserve the original appearance and physical integrity, especially for polyolefins and polyester resins.

Chemistry

Chemical Name:                    2-(3’-tert-butyl-2’-hydroxy-5’-methylphenyl)-5-chlorobenzotriazole

CAS Number:                         3896-11-5

Chemical Structure:

                        BLS 1326

Typical Properties         

Product Form:                        Solid

Melting Point:                        138-141oC

Molecular Weight:                 315.8 g/mol

Product Details: Please view our  BLS 1326 PDF

 

BLS 1328

Overview

BLS 1328 is a benzotriazole UV absorber, which is highly effective for the light stabilization of

plastics, coatings, and adhesives. It protects the polymers from UV radiation helping to preserve

the original appearance and physical integrity.

Chemistry

Chemical Name:                      Phenol, 2-(2Hbenzotriazol2yl)4,6bis(1,1dimethylpropyl)

CAS Number:                           25973-55-1

Chemical Structure:

          bls 1328

Typical Properties

Product Form:                          Solid

Melting Range:                         0 – 88°C

Molecular Weight:                    351.5 g/mol

Product Details:  Please view our  BLS 1328 PDF

BLS 1710

Overview

BLS 1710 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers.  BLS 1710 protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of engineered plastics, elastomers, PVC, adhesives, and polyurethanes during outdoor weathering.

Chemistry

Chemical Name:                     2-(2H-Benzotriazole-2-yl)-4-methylphenyl

CAS Number:                          2440-22-4

Chemical Structure:

     BLS 1710

Typical Properties         

Product Form:                         Solid

Melting Point:                          128 - 132oC

Molecular Weight:                   225 g/mol

Product Details:  Please view our BLS 1710 PDF

BLS 3035

Overview

BLS 3035 is a solid cyanoacrylate-type UV absorber (UVA) used as a light stabilizer in plastics, adhesives, and coatings.  The product is inherently non-discoloring and is also chemically non-interacting with reactive monomers and polymerization catalysts.

Chemistry

Chemical Name:                   2−Propenoic acid, 2−cyano−3,3−diphenyl−, ethyl ester (TSCA name)

                                                     Etocrilene (common name)

CAS Number:                          5232-99-5

Chemical Structure:

BLS 3035

Typical Properties         

Product Form:                         Solid

Melting Point:                           95oC

Molecular Weight:                   277.33 g/mol

Product Details:  Please view our BLS 3035 PDF

BLS 3039

Overview

BLS 3039 is a liquid cyanoacrylate-type UV absorber (UVA) used as a light stabilizer in plastics, adhesives, and coatings.  The product is inherently non-discoloring and is also chemically non-interacting with reactive monomers and polymerization catalysts.

Chemistry

Chemical Name: 2−Propenoic acid, 2−cyano−3,3−diphenyl−, 2−ethylhexyl ester (TSCA

                           name) Octocrilene (common name)

CAS Number:    6197-30-4

Chemical Structure:

BLS 3039

Typical Properties         

Product Form:                         Liquid

Freezing Point:                        -10oC

Product Details:  Please view our BLS 3039 PDF

BLS 5411

CAS#: 3147-75-9
Advantages: Strong absorption of ultraviolet radiation in the 300-400 nm region
High degree of photostability
Low volatility
Low color contribution
Excellent solubility
Chemical Structure:

 


BLS-5411
Product Details:  Please view our BLS 5411 PDF