ISO Resins
Isophthalic SMC Resin
A Samrat Poly Resins, India grade, SPR 301 SMC. Enquire with Samrat FRP Traders for supply, pricing and packaging in Nepal.
Price
PRICE ON REQUEST
Isophthalic SMC Resin pricing varies based on:
- Order Quantity
- Product / Resin Grade
- Current Raw Material Rates
Technical documents
Download Technical Data SheetPDFFull product rangeProduct catalogue · PDF, 16 pagesBrowse the document libraryDocuments issued by: Samrat Poly Resins, India
Isophthalic resin for hot-mould sheet moulding compound processing.
Catalogue codeSPR 301 SMC
Isophthalic sheet moulding compound resin
Resin chemistryIsophthalic Polyester Resins (SPR 301)
- Manufacturer
- Samrat Poly Resins, Doraha, India
- Nepal supplier and importer
- Samrat FRP Traders
- Technical information issued by
- Samrat Poly Resins (2026 catalogue)
- Price, packaging, lead time in Nepal
- Confirmed on enquiry
About this product
SPR 301 SMC is the isophthalic resin for hot-mould sheet moulding compound processing. The supplier lists SMC production and hot-mould and compression-moulding processes, and describes superior properties compared with the orthophthalic SPR 201 SMC grade.
The catalogue publishes one shared typical specification for this resin and the isophthalic DMC resin, SPR 301 DMC. They are still two separately manufactured products; order by code.
Samrat FRP Traders handles enquiries for this Samrat Poly Resins, India grade in Nepal. Pricing, packaging and availability are confirmed on enquiry.
What this means for buyers
SMC, not DMC
SMC is reinforcement and filler pre-impregnated in sheet form. If you make dough moulding compound, the isophthalic product is SPR 301 DMC.
Choose the chemistry
SMC resins exist in the orthophthalic (SPR 201), isophthalic (SPR 301) and terephthalic (SPR 401) families. Pick the chemistry your compound requires.
Key features
- Isophthalic sheet moulding compound resin
- For hot-mould and compression moulding
- Supplied non-accelerated
Typical specification
- Appearance
- Clear, pale-yellow to light-amber liquid
- Viscosity
- 800–1,400 cPs at 25 °C
- Gel time
- 12–18 minutes at 25 °C
- Specific gravity
- 1.10–1.14
- Styrene content
- 31–36% by weight
- Supply condition
- Non-accelerated
- Reference cure system
- MEKP 1.5% + Cobalt Octoate 0.4% — added separately during use
Source: Samrat Poly Resins, India — product catalogue, 2026 edition (typical specification)
How to read these values
- SMC and DMC resins are separate products with their own applications. Neither is a colour or size variant of the other.
- The catalogue publishes one shared typical specification for the isophthalic SMC and DMC resins. The two are still separately manufactured products.
- These are typical values from the supplier’s product catalogue. They describe the grade; they are not batch guarantees or acceptance limits.
- Resin data does not guarantee the performance of a finished FRP component. Confirm suitability with a trial on your own process, reinforcement and cure conditions.
Applications and processes
Uses listed in the supplier’s catalogue.
- Sheet moulding compound production
- Hot-mould and compression-moulding processes
Limitations
- The catalogue publishes one shared specification for the isophthalic SMC and DMC resins. Moulded-part properties come from the whole compound and press cycle.
- The values shown are typical catalogue values for the grade, not batch guarantees, acceptance limits or a Technical Data Sheet. Confirm the current data before relying on a figure.
- Resin data does not describe a finished part. Strength, durability, fire behaviour and chemical resistance of a part depend on its design, reinforcement, process, cure and testing.
When to consider a different resin
These grades are made for a different situation. Match them against your own service conditions.
- DMC/SMC ResinThe compound is specified with an orthophthalic resin.
- Terephthalic SMC Resin (SPR 401 SMC)The SMC is specified with a terephthalic resin for heat and chemical resistance.
Comparison table
| Criterion | Isophthalic SMC Resin (SPR 301 SMC) | DMC/SMC Resin | Terephthalic SMC Resin (SPR 401 SMC) |
|---|---|---|---|
| Chemistry | Isophthalic unsaturated polyester | Orthophthalic unsaturated polyester | Terephthalic unsaturated polyester |
| Supply condition | Non-accelerated | Non-accelerated | Non-accelerated |
| Viscosity | 800–1,400 cPs at 25 °C | 600 cPs at 25 °C | 800–1,500 cPs at 25 °C |
| Gel time | 12–18 minutes at 25 °C | 12–18 minutes at 25 °C | 12–18 minutes at 25 °C (ambient QC) |
| Cure system | MEKP 1.5% + Cobalt Octoate 0.4% — added separately during use | Not listed in the TDS summary | MEKP 1.5% + Cobalt Octoate 0.4% — added separately during use |
| Listed uses | Sheet moulding compound production; Hot-mould and compression-moulding processes | DMC and SMC moulding compounds | Sheet moulding compound production; Compression-moulded composite components; Hot-mould processing |
| Choose when | The SMC is specified with an isophthalic resin. | The compound is specified with an orthophthalic resin. | The SMC is specified with a terephthalic resin for heat and chemical resistance. |
Sources: the 2026 product catalogue of Samrat Poly Resins, India for the catalogue grades, and each earlier product’s published Technical Data Sheet summary. Values are typical and were measured under the conditions each source states, so they are a guide to selection, not batch guarantees. Viscosities measured at different spindle speeds or shear conditions are not directly comparable.
Manufacturing and quality context
Samrat Poly Resins manufactures the grade in Doraha, Punjab, India. Its 2026 catalogue presents every grade under its resin chemistry and code and describes a quality inspection laboratory at Doraha. Batch-specific questions, gel-time or viscosity queries and clarification of catalogue values are answered by the manufacturer’s technical team.
The catalogue recommends a trial on the customer’s own process and reinforcement before commercial use: typical values are not a substitute for a trial. Technical and safety data sheets are issued grade by grade: this grade’s Technical Data Sheet is published on this page, and a Safety Data Sheet has not been issued for it here. Ask for the current revision before relying on a document.
Samrat FRP Traders supplies and imports the grade for Nepal and handles enquiries. It does not manufacture, reformulate or certify resins.
Related process guides
These guides are written for another grade. They explain the process; they do not approve this grade for it.
Handling and safety
- Use suitable personal protective equipment and adequate ventilation.
- Store resin, initiators and accelerators separately, in original sealed containers, cool, shaded and away from heat and ignition sources.
- Add the initiator and the accelerator to the resin separately, according to the confirmed process.
- Never mix a concentrated peroxide initiator directly with a cobalt accelerator.
Product details
Applications
Product comparisons
Frequently asked questions
Is SPR 301 SMC the same product as SPR 301 DMC?
No. They share one published typical specification but are separate products for different compound forms.
How does it compare with the orthophthalic SMC resin?
The supplier describes superior properties compared with SPR 201 SMC. Confirm the difference that matters to your part with a trial.
Is a technical or safety data sheet available?
Yes. The supplier’s Technical Data Sheet for this grade is published on this page — Doc. Ref SPR-TDS-ISM, Rev. 01, September 2026, issued by Samrat Poly Resins, India. No Safety Data Sheet has been issued for this grade on this site; ask us and we will request the current one.
Is it the same product as SPR 301 DMC?
No. They share one published typical specification but are separately manufactured products.
What gel time is listed?
12–18 minutes at 25 °C, with 800–1,400 cPs viscosity at 25 °C.
Knowledge hub
A fuller explanation of this grade’s chemistry, values and limits.
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