CPM-31 PVC Paste Resin with 1200-1400 Polymerization Degree, 2.0-4.0 Pa.s B-type Viscosity, and ≤10 μg/g Residual VCM

CPM-31 PVC Paste Resin - Technical Product Report

1. Executive Summary

CPM-31 is identified in the supplied Technical Data Sheet as a PVC paste resin grade supplied as a white powder and referenced to executive standard GB/T 155592-2008.

The source specifies an average degree of polymerization of 1200-1400 and a standard B-type viscosity of 2.0-4.0 Pa.s. Additional quality controls cover impurity particles, volatile matter including water, sieve residue, residual vinyl chloride monomer (VCM), scraper fineness, a source row labeled bulk density in Chinese, and thermal whiteness.

This report preserves the source data while expanding it into a customer-facing technical format. Application and processing comments are clearly treated as evaluation guidance because the one-page TDS does not provide detailed formulation recipes, gelation/fusion data, mechanical properties, packaging, shelf life, or specific end-use recommendations.

2. Product Overview

3. Technical Data

4. Source Data Clarification

The seventh row of the source table contains a bilingual inconsistency. The Chinese label reads 'bulk density, g/ml', while the English text reads 'Alcohol extract mass fraction /% ≤'. The stated value is 0.2-0.4. Because the source itself is inconsistent, this report retains the Chinese/unit interpretation as the likely intended parameter while explicitly flagging the discrepancy. Supplier confirmation is recommended before contractual use.

5. Technical Performance Interpretation

Polymerization degree: The 1200-1400 range is a central grade-identification parameter. Actual plastisol processing and finished-product properties also depend on plasticizer type, additive package, mixing history and thermal processing.

B-type viscosity: The stated 2.0-4.0 Pa.s range provides a quality-control reference. The one-page TDS does not provide the complete test formulation, spindle, speed, conditioning time or temperature, so direct comparison with other suppliers should use harmonized test conditions.

Cleanliness and particle control: The impurity limit and two sieve-residue limits provide useful indicators for contamination and coarse particle/agglomerate control, especially in appearance-sensitive processing.

Volatile matter: The ≤0.38% value controls moisture and other volatiles. Stable volatile content can contribute to more consistent storage and downstream paste preparation.

Residual VCM: The source limits residual VCM to ≤10 μg/g. Compliance of finished articles should be assessed against the specific regulatory requirements of the intended market and application.

Scraper fineness: The ≤40 μm requirement provides another quality indicator related to coarse particles or agglomerates. The detailed test method is not stated.

Thermal whiteness: Whiteness ≥95% after 160°C for 10 minutes provides a defined thermal-color reference. It should not be treated as a complete thermal-stability or long-term aging specification.

6. Potential Application Relevance

The source identifies CPM-31 as PVC paste resin but does not list specific applications. The following table therefore presents common evaluation contexts for paste PVC resin and is not a supplier-certified application list.

7. Formulation & Processing Considerations

Establish plastisol viscosity using the customer's actual plasticizer, stabilizer, filler, pigment and additive package.

Evaluate viscosity immediately after mixing and after defined aging because paste-resin rheology can evolve with time.

Optimize mixing sequence, shear and deaeration to obtain reproducible paste behavior and minimize entrapped air.

Determine gelation and fusion conditions experimentally; the source does not provide gelation temperature, fusion time or rheological curves.

For appearance-sensitive products, combine impurity, sieve-residue and fineness checks with finished-surface inspection.

Evaluate thermal color under the customer's actual oven/process profile in addition to the source's 160°C/10 min whiteness condition.

8. Quality Control & Incoming Inspection

9. Commercial & Technical Evaluation Summary

10. Storage, Handling & Safety

The supplied TDS does not provide packaging, shelf-life, storage or detailed safety instructions. Users should obtain the current supplier Safety Data Sheet and commercial storage/packaging documentation before purchasing or handling the material.

As general powder-resin handling practice, maintain clean and dry storage, keep packaging closed, avoid contamination and unnecessary dust generation, and preserve lot traceability. These points are general technical guidance rather than source-stated CPM-31 requirements.

11. Limitations of the Supplied Data

The source is a one-page bilingual technical table. It does not provide complete test methods for all parameters, plastisol formulation details, viscosity-aging curves, particle-size distribution, plasticizer absorption, gelation/fusion behavior, thermal-stability time, mechanical properties, packaging, shelf life or detailed application recommendations.

No unsupported numerical values have been added to this report. Final commercial qualification should use the current supplier TDS, COA, SDS and application-specific technical documentation, with particular attention to clarification of the inconsistent bilingual labeling in row 7.

12. Conclusion

CPM-31 is presented in the supplied TDS as a white-powder PVC paste resin referenced to GB/T 155592-2008. The documented grade controls include average polymerization degree 1200-1400, B-type viscosity 2.0-4.0 Pa.s, impurity particles ≤20, volatile matter ≤0.38%, 250 μm sieve residue 0%, 63 μm sieve residue ≤0.1%, residual VCM ≤10 μg/g, scraper fineness ≤40 μm and thermal whiteness ≥95% at 160°C for 10 minutes.

For customer approval, the material should be evaluated in the actual plastisol formulation and processing route. Key trial items should include initial and aged viscosity, dispersion, deaeration, gelation/fusion, surface appearance, thermal color stability and final-product performance.

The supplied technical data provide a useful starting point for grade comparison and incoming inspection, but application trials and current supplier documentation remain necessary for final commercial qualification.

Notes:
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