Properties

  • Its aqueous solution behaves as a polymer electrolyte.
  • Its solubility in water is much better than ordinary PVOH.
  • Its aqueous solution excels in viscosity stability, is less prone to abnormalities in fluidity under high shearing speed conditions, and performs excellently in high-speed coating operations.
  • Its solubility in aqueous alkali solutions is excellent.
  • It features good compatibility with water-soluble polymers such as starch.
  • It forms a chelate with a metal ion (in particular, aluminum ion) to cross-link and insolubilize the metal ion.
  • As a result of coating operation for paper, it greatly improves the surface strength and strength in Z-axis of the paper.
  • It features much better barrier properties than ordinary GOHSENX™
Technical Specifications
Product Grade Viscosity*1 (mPa.s) Saponification Degree (mol %) pH*2 Applications
T-330H Min 99.0 27.0 ~ 32.0 6.0 ~ 8.0 Sizing agent for Printing paper, Coat paper, NCR paper (Carbonless) Release paper, Emulsifier for PVAc-Em Adhesive Cement mortar agent, Film, Drilling fluid control agent
T-330 95.0 ~ 98.0 27.0 ~ 33.0 6.5 ~ 7.5
T-350 93.0 ~ 95.0 27.0 ~ 33.0 6.5 ~ 7.5
*1: Viscosity of 4% aqueous solution at 20 degree C
*2: 4% aqueous solution

Applications

The possible applications of GOHSENX™ T include:

Paper-related agents
Surface strength improvement, printability improvement, vessel pick prevention, improved Z-axis strength, barrier effect (oil resistance, chemical resistance)

Compatibility with Starch

Cross-linking Properties with Polyamide Epichlorohydrin

Product Amount of Cross-linker (%) Film Drying Conditions Elution Rate (%)
GOHSENX™ T-330 0 23 degree C x blow-drying 100
70 degree C x 2min. 100
70 degree C x 10min. 100
5 23 degree C x blow-drying 100
70 degree C x 2min. 100
70 degree C x 10min. 64
10 23 degree C x blow-drying 71
70 degree C x 2min. 59
70 degree C x 10min. 42

Textile Sizing Agent
Divide performance, fluff binding effect, wear resistance improvement, desizing readiness

Fluidity under High Shear Speed

Plywood Adhesives
Initial bonding strength

Cement and Mortar Additives
Stabilization of alkalinity

Related Technical Data
Characteristics of GOHSENX-T type
GOHSENX T-330H for Coated Base Paper
GOHSENX T-HS-1
Example of Polymerization of Vinyl Acetate using GOHSENX T

Dissolution and Storage

Dissolving GOHSENX™ T

Usually, PVA is used in the form of an aqueous solution. Solubility in water varies depending on the type of PVA. GOHSENX™ T, a carboxyl group-modified PVA, boasts higher solubility than GOHSENX™ T.
GOHSENX™ T is charged into room temperature water slowly in small amounts, and thoroughly dispersed. The water is heated, with constant stirring, the temperature is kept at 80 to 90 degree C for 30 to 60 minutes.

Storing GOHSENX™ T

Avoid storage in tanks or pipes that can readily rust. When considering blending GOHSENX™ T with a defoaming agent, rust preventive agent, or antiseptic agent, refer to the handling instructions of the chemical being blended.

Comparison of Effluent Water Loads of Water Soluble Polymers
Polymer COD (mg/kg)x104 BOD(mg/kg)x102
GOHSENX™ T-330 99 83
GOHSENOL™ 60 ~ 100 50 ~ 100
Corn Starch 36 7,400
Measuring conditions: Sample concentrations mean pure material concentrations.
COD was measured by potassium permanganate method (JIS K 0102), and BOD5 means the BOD value of over 5 days.
Measurement: Registration No. of measurement certification enterprise, Osaka No. 10013, KK Osaka Environmental Technology Center.

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