Chemistry

The chemistry and process engineering at Thurs.

What is Thurspol NX45?

It is an acrylic homopolymer.

Where is Thurspol NX45 used?

It is used as a dispersing agent in textiles, paints, and ceramic industry.

What is the primary monomer in Thurspol NX45? What is its mass contribution?

The primary monomer is acrylic acid. It is 30% by mass.

What is the chemical structure of acrylic acid?

What are the catalysts and terminators used in Thurspol NX45?

Catalysts

1. Potassium persulphate

2. Hydrogen peroxide

3. Sodium metabisulphite
   

Terminator: sodium hypophosphite

What is the chemical structure of potassium persulphate?

Potassium persulfate is an oxidizing agent. It is a great radical initiator.

What is the chemical structure of sodium hypophosphite? What are some properties of SHP?

H2-P(=O)-ONa
SHP is a chain transfer agent and scavenges free radicals.

What is the chemical structure of sodium metabisulphite? What is it used for?

SMBS is a reducer and a peroxide eliminator.

How long does it take to complete a batch of Thurspol NX45? From charging to packing?

It takes three days to do this. Neutralizing NX45 takes nearly a whole day and requires rest.

Does Thurspol NX45 need to be neutralized? If yes, then how?

Yes, Thurspol NX45 needs to be neutralized with caustic lye.

What is SNX40? What is it used for?

SNX 40 is an acrylic-maleic copolymer. It is used to wet and disperse textile dyes.

What is the product list for SNX40?

1. Maleic anhydride

2. Acrylic acid

3. Potassium persulphate

4. P. salt

5. Sodium metabisulphite

6. Caustic lye

7. BT20 / benzoisothiazoline (preservative)

8. Water

What is BT20? Give me the structure, full form, and its use.

BT20 stands for Benzoisothiazoline. It is a preservative bacteriacide.

What are the core monomers in SNX40? What are their mass percentages?

Maleic anhydride — 15%

Acrylic acid — 30%

Hydrogen peroxide — 2.6%

What is Silicon 1-30%?

Silicon 1-30% is an aminosilicon emulsion used in textiles as a softening agent.

What are the ingredients in Silicon 1-30%? What are their mass percentages?

1. Aso Am 928—14%

2. LA7—14%

3. PEG400—0.3

4. Acetic acid—1%

5. Isopropyl alcohol—1%

6. P. salt—2.7%

7. Water—67%

What is LA7? What is its chemical structure?

LA7 is a non-ionic surfactant. It is a general purpose emulsifier and wetting agent.

What is Aso Am 928? Give me the formula.

Aso Am 928 is a aminosilicon compound. This is the primary active agent in Silicon 1-30%.

What is PEG400? Why is it used in Silicon 1-30%?

PEG400 is clear, colourless liquid. Is it water-soluble.

What is acetic acid? Why is it in Silicon 1-30%?

Acetic acid is vinegar. It is present in Silicon 1-30% to stabilize pH and to protonate the amine. This makes the solution less hazy.

What is DSAK-0234?

DSAK-0234 is a ter-polymer used in protective paints. It is a ter-polymer of styrene, methacrylic acid, and butyl acrylate monomer.

What are the ingredients in DSAK-0234?

DSAK-0234 has

1. Isopropanol—40.6%

2. Methacrylic acid—28.9%

3. Butyl acrylate monomer (BAM)—1%

4. Styrene—12.3%

5. Potassium persulphate—3.0%

6. Caustic soda for neutralization—14%

What is the purpose of IPA in DSAK-0234?

IPA is the solvent for polymerization.