MAHI POLYMERS
Mithacrylic Acid Copolymers Type C

Mithacrylic Acid Copolymers Type C

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MAHICOAT L 100 ā€“ 55

ā€œ Methacrylic Acid Copolymer Type Cā€

MAHICOAT L 100-55 is an anionic copolymer based on methacrylic acid and ethyl acrylate. It is insoluble in acids and pure water. The polymer corresponds to USP/NF "Methacrylic Acid Copolymer, Type C".
It becomes soluble in a neutral to weakly alkaline milieu by forming salts with alkalis, thus affording film coatings which are resistant to gastric juice but freely soluble in intestinal juice.

Physical properties:

Sr .no

 

                   Test

 

                              Value (tipical)

01.

 

Appearance

 

White ,moderately, free-flowing powder

02.

 

Odor

 

Weakly sour

03.

 

Acid value

 

315 mg KOH/g of dry polymer substance

04.

 

Viscosity (mPa.s,20`c 30rpm)

 

100 ā€“ 200

05.

 

Solvents

 

Iso propyl alcohol acetone  and ethanol

06.

 

.Particle size

 

95 % less than 0.5 mm

07.

 

Dissolution

 

Dissolution above  PH 5.5

 

Applications :

Coating of tablets and pills (Colorless and transparent: colored with pigments)
Coating of pellets, granules, powders;

  • To improve the keeping properties protection against moisture, light and air - coatings stable under tropical conditions.
  • for resistance to gastric juice.
  • for resistance to gastric juice with delayed drug release in the intestine when mixed with MAHICOAT L 100  & S 100.
  • To insulate hygroscopic cores.
  • To isolate porous cores.
  • For the production of film coatings for lozenges and troches.
  • For protection against atmospheric influences.