PLASTICIZERS

 

Table VII shows the compatibility of "Elvacite" resins with various plasticizers. The phthalate esters in particular are generally effective plasticizers for use with "Elvacite". The low volatility and consequently greater permanence of isooctyl benzyl phthalate ("Santicizer" 26117) and benzyl phthalate ("Santicizer" 27817) are advantageous for high-temperature or prolonged-service applications. "Santicizer" 9717 (dialkyl adipate) adds flexibility and cold check resistance.

Adding a plasticizer to an "Elvacite" resin-based formulation improves the flexibility of the resulting film, but at some sacrifice in film hardness, block-resistance, tensile strength and possibly chemical resistance.

The butyl methacrylate grades of "Elvacite" acrylic resin do not normally require plasticization. However, "Elvacite" 2044 will accept any of the plasticizers listed in Table VII. Softening of "Elvacite" 2045 or 2046 is preferably accomplished by blending with "Elvacite" 2044.

  

 

TABLE ¥¶   Compatibility lf "Elvacite" Acrylic Resins with Plasticizersa

  C = Compatible at 50/50 resin/plasticizer ratio

  I  = Incompatible at 90/10 resin/plasticizer ratio

LC = Compatible at 90/10 resin/plasticizer ratio but incompatible at 50/50

 

Methyl Methacrylate

Methacrylate Copolymer Resins

Ethyl Methacrylate Resins

 

Plasticizer

2008,2009

2010,2021

2041

2013

2014

2016

2028

2042

2043

"Abalyn"11*(methyl abietate)

LC

SC

C

¡ª

C

C

C

Dibutyl phthalate

C

C

C

¡ª

C

C

C

Dibutyl sebacate

LC

LC

LC

¡ª

C

C

C

Di-(2-ethylhexyl) azelate

C

C

C

¡ª

C

C

¡ª

"Hercoflex" 60011(pentaerythritol ester)

LC

LC

LC

C

C

C

C

"Hercoflex" 70711(polyol ester)

LC

LC

LC

¡ª

C

C

C

"Resoflex" R-29620(alkyd)

I

I

LC

¡ª

LC

I

LC

"Santicizer"817(n-ethyl toluene sulfonamides)

C

C

C

C

C

C

C

"Santicizer"9717(dialkyl adipate)

C

C

C

C

C

C

C

"Santicizer"16017(butyl benzyl phthalate)

C

C

C

C

C

C

C

"Santicizer"26117(isooctyl benzyl phthalate)

C

C

C

¡ª

C

C

C

"Santicizer"27817(benzyl phthalate)

C

C

C

¡ª

C

C

C

"Santicizer"B-1617(butyl phthalyl butyl glycolate)

C

C

C

¡ª

C

C

C

Tricresyl phosphate

C

C

C

C

C

C

C

a) Films for these tests were cast from MEK solutions

¡ª) Not tested