ZHONGTAI WP62GP Paste PVC Resin with Average Degree of Polymerization 980-750 K Value 65-59 and B Viscosity 3.0-7.0

ZHONGTAI WP62GP Paste PVC Resin - Technical Product Report

1. Executive Summary

WP62GP is identified in the supplied TDS as Zhongtai Paste PVC Resin, supplied as a white powder and referenced to GB/T 15592-2008. The source provides thirteen technical control items covering polymerization degree, K value, B viscosity, impurity particles, volatile matter, sieve residue, residual VCM, thermal whiteness, scraper fineness, pH of water extract, alcohol extract and 24-hour paste thickening rate.

The grade has a stated average degree of polymerization of 980-750 and K value of 65-59. Its B viscosity is specified at 3.0-7.0 under the source-stated condition of 50 r/min with DOP 60 parts. These values should be interpreted using the supplier's original test basis rather than directly compared with differently conditioned viscosity data.

This report preserves the supplied technical limits and expands them into a customer-facing format. Where the source contains awkward or inconsistent bilingual wording, the original meaning and numerical value are retained and the issue is explicitly noted rather than silently corrected.

2. Product Overview

3. Technical Data

4. Source Data Clarifications

The source prints the polymerization and K-value ranges in descending order (980-750 and 65-59). This report reproduces the supplier's presentation rather than silently reversing the ranges.

For Item 9, the Chinese label clearly refers to whiteness at 160°C for 10 minutes, while the English description in the source incorrectly repeats 'Number of impurity particles, pcs ≤'. The numerical requirement shown is 76 and the Chinese row includes a ≥ sign. This report therefore identifies the parameter as thermal whiteness ≥76%, while explicitly documenting the bilingual mismatch.

The B-viscosity unit typography in the source is difficult to interpret ('100-3 Pa.s'). The report retains the stated numerical range of 3.0-7.0 and the test condition (50 r/min, DOP 60 parts) without inventing a normalized unit conversion.

5. Technical Performance Interpretation

Polymerization degree and K value: These two source-listed parameters characterize the resin grade and can be useful when screening compatibility with an existing paste-PVC formulation. The TDS does not provide comparative claims against other grades.

Paste viscosity: The 3.0-7.0 B-viscosity range is meaningful only together with the supplier's stated test condition. Actual plastisol viscosity will also depend on plasticizer chemistry, resin/plasticizer ratio, additives, mixing history, temperature and aging time.

Cleanliness and sieve control: Impurity particles ≤40 pcs, 0.25 mm sieve residue ≤0.2% and 0.063 mm sieve residue ≤3.0% provide source-defined controls for contamination and coarse/agglomerated material.

Volatile matter: The ≤0.50% requirement provides a control for moisture and other volatile components, relevant to lot consistency and downstream paste preparation.

Residual VCM: Residual vinyl chloride monomer is limited to ≤10 ppm in the source. Finished-product regulatory compliance must be evaluated separately for the intended market and application.

Thermal whiteness: The ≥76% value after 160°C for 10 minutes is a source-defined thermal color indicator. It should not be treated as a complete thermal-stability or long-term heat-aging specification.

Extractables and pH: The water-extract pH limit and alcohol-extract mass fraction provide additional chemical-quality controls that may be relevant to formulation compatibility and consistency.

24-hour paste thickening: The ≤100% thickening-rate requirement provides a source-defined indicator of paste rheology evolution over 24 hours. The detailed calculation and test recipe are not provided in the one-page TDS.

6. Potential Application Relevance

The supplied TDS identifies WP62GP as paste PVC resin but does not list specific finished-product applications. The following table therefore presents common technical evaluation contexts for paste PVC resin and should not be read as manufacturer-certified application claims.

7. Formulation & Processing Considerations

Use the supplier's stated viscosity test basis when comparing incoming lots; do not compare the 3.0-7.0 value directly with data generated under different DOP loading, speed, temperature or conditioning.

Establish an application-specific viscosity-aging profile, including at least initial and 24-hour measurements where relevant.

Optimize resin/plasticizer/additive mixing sequence, shear and deaeration for the actual formulation.

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

For surface-critical applications, evaluate sieve residue, impurity particles and scraper fineness together with actual finished-surface inspection.

Evaluate thermal color under the real production heating 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 practice, maintain clean and dry storage, keep packaging closed, avoid contamination and unnecessary dust generation, and preserve lot traceability. These are general technical considerations and are not source-stated WP62GP requirements.

11. Limitations of the Supplied Data

The source is a one-page bilingual technical data sheet. It does not provide complete test methods, detailed plastisol formulation, viscosity-aging curves beyond the stated 24-hour thickening parameter, particle-size distribution, plasticizer absorption, gelation/fusion behavior, mechanical properties, packaging, shelf life, or detailed application recommendations.

No unsupported supplier specifications have been added. Final commercial qualification should use the current supplier TDS, COA, SDS and application-specific technical documentation, with supplier clarification recommended for the bilingual and unit-format inconsistencies identified above.

12. Conclusion

WP62GP is presented as Zhongtai Paste PVC Resin, a white-powder grade referenced to GB/T 15592-2008. Its source-defined quality controls include polymerization degree 980-750, K value 65-59, B viscosity 3.0-7.0 under the stated DOP/rotational condition, impurity particles ≤40, volatile matter ≤0.50%, residual VCM ≤10 ppm, scraper fineness ≤100 μm, water-extract pH ≤9.0, alcohol extract ≤4.0% and 24-hour paste thickening rate ≤100%.

For customer approval, WP62GP should be evaluated in the actual plastisol recipe and processing route, with emphasis on initial and aged viscosity, dispersion, gelation/fusion, surface appearance, thermal color stability and finished-product performance. These trials should supplement the source technical data and current supplier documentation.

Notes:
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Qingdao Botian Chemical Co., Ltd belongs to Qingdao Tida International Trade Co., Ltd, founded in 2003,.After eighteen years of technological and scientific innovation and production line management, we have became the leading company of Titanium Dioxide products , PVC Paste Resin products production and international sales company.
Main products include over a dozen kinds of high-precision chemical products which are chloride process and sulphate process Titanium Dioxide,Titanium Oxychloride, Titanium Tetrachloride, High Titanium Slag, PVC Paste Resin, Caustic Soda etc. With a professional, tight, young technology R&D team, making the product has a high precision and purity of scientific evidence and quality guarantee. 
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