Low voc solvent cement formulation with reduced toxicity and rapid curing
OwnerRanjith KOKKOT, Vignesh PAVUNRAJ +3inventors
InventorsRanjith KOKKOT, Vignesh PAVUNRAJ, Babu MALLIKARCHUNAN, Shireesh PANKAJ, Chinmay Pradeep KULKARNI
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Abstract
The present invention relates to a PVC/CPVC solvent cement formulations using less toxic ketonic solvent mixtures comprising of first three members in homologous series of ketones having one low boiling ketone with boiling point less than 70° C. and solvent mixture having two medium boiling ketones with boiling point around 100° C. The solvent cement formulation disclosed in the present invention is less toxic, low VOC and fast curing method of preparing said composition comprising PVC/CPVC solvent cement, which is less toxic, low VOC, fast curing and cost effective.
Claims15
A CPVC/PVC solvent cement formulation for bonding articles comprising;
- i. Organic solvents;
- ii. CPVC/PVC resin
- iii. Organic heat Stabilizers;
- iv. Polymeric modifier
- v. Rheology modifiers
- vi. Inorganic fillers
- vii. Antioxidant
- viii. Pigments
- wherein said organic solvents are selected from, but not limited to ketonic, non-ketonic or mixture of Ketonic/non-ketonic solvents;
- wherein said organic heat stabilizers are selected from, but not limited to, Uracil-based, Stearoyl Benzoyl Methane (SBM), another organic compound without any heavy metals;
- wherein said solvent does not comprise Tetrahydrofuran (THF) and Cyclohexanone;
- wherein said polymer modifier is selected from acrylic resin having molecular weight ranging from 50,000 g/mol to 10.00,000 g.mol.
- wherein said rheology modifier is selected from chlorosilane treated fumed silica.
- wherein said antioxidant is selected from butylene oxide and its derivatives.
- wherein said pigments are selected from organic diarylike azo compound.
Dependencies are inferred from the claim text.