Polyurethane catalyst K15 potassium isooctanoate 2-ethylhexanoate potassium salt CAS 3164-85-0
Overview:
Chinese name: Potassium Isooctanoate
Nicknames: catalyst K-15, polyurethane catalyst K-15, trimeric catalyst K-15, CAS 3164-85-0, hard foam trimeric catalyst K-15, hard foam catalyst K-15
English name: Potassium Octate
Molecular formula: C8H15O2K
Molecular weight: 182.30
CAS number: 3164-85-0
Chinese name
Potassium isooctanoate, potassium 2-ethylhexanoate, potassium 2-ethylhexanoate, potassium 2-ethylhexanoate hydrate, potassium 2-ethylhexanoate
Molecular structure:
See figure
Molecular formula:
C8H15KO2
Molecular weight:
one hundred and eighty-two point three
CAS number:
3164-85-0
EINECS number:
221-625-7
MDL number
MFCD00045896
molecular weight
one hundred and eighty-two point three
Physical and chemical properties:
Appearance: Colorless liquid
Viscosity (25 ?, mPa. s): 5400
Density (25 ?, g/cm3): 1.13
Water solubility: soluble in water
Flash point (PMCC, ?): 138
Hydroxyl value (mgKOH/g): 271
English name: Kalium Octoate
Molecular formula: C8H15O2K
Molecular weight: 182.30
Content: ? 98%
Moisture content: ? 2%
CAS No.: 3164-85-0
Appearance: White to light yellow solid
characteristic
Excellent chemical stability. This product has the advantages of stable acid value, stable molecular weight, light color, and good catalytic effect, and can completely replace potassium naphthenate. The solubility of solutes belongs to total solubility. This product is a universal sodium salt agent used for the synthesis of antibiotic solvents. Compared with the traditional salt forming agent sodium acetate, its obvious advantages lie in its gentleness and stability after salt forming, and it can be dissolved in many organic solvents, which is conducive to the separation of anhydrous final products and improves the quality and yield of products.
Usage:
K-15 is usually a solid and is usually dissolved and diluted with diethylene glycol to form a solution;
K-15 is suitable for use in high viscosity polyol formulations to promote isocyanate reactions with high activity;
K-15 is widely used in spraying hard foam, PIR hard foam and other kinds of PU hard foam.
Mainly used as a salt forming agent for the synthesis of cephalosporin antibiotics, a crosslinking agent for polymer materials, a heat stabilizer for plastic products, a catalyst for polymerization reactions, and an additive for lubricating and fuel oils. In the polymerization process of polyester resin system, promoting the catalysis of cobalt soap effectively reduces the amount of cobalt used; It can also be used to make dyes, spices, preservatives, etc.
Application:
Polyurethane hard foam trimerization catalyst with high activity, suitable for spraying, hard foam, PIR hard foam, PU hard foam. It is recommended to add 3-5 PPHP (per 100 parts of polyols)
Storage and transportation:
Should be sealed and stored in a dry, cool, and ventilated warehouse
Packaging:
200KG/barrel storage: It is recommended to store in a dry and cool area with appropriate ventilation. Please tighten the packaging cover as soon as possible after the original packaging to prevent water ingress and other substances from affecting product performance. Do not inhale dust and avoid contact with skin and mucous membranes. Smoking, eating, and drinking are prohibited in the workplace. After work, take a shower and change clothes. Store contaminated clothes separately and reuse them after washing. Maintain good hygiene habits.
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Role of Dioctyltin Oxide as a Catalyst
Organotin stabilisers mainly include the following types:
- Aliphatic acid salts: for example, dibutyltin dilaurate, di-n-octyltin dilaurate, and so on. The tin atoms in this type of stabiliser can be coordinated with the chlorine atoms on the PVC molecular chain and inhibit the reaction of removing HCl through the replacement reaction, thus playing a stabilising role.
- Maleate salts: such as dibutyltin maleate, bis(monobutyl maleate) dibutyltin, di-n-octyltin maleate and so on. This type of stabiliser can react with the conjugated double bond in a bis-alkene addition reaction to inhibit the generation of polyolefin structures.
- Thiol salts: For example, bis(isooctylthiolate) tin n-octylate, di-n-octyltin bis(isobutyl mercaptoacetate), di-n-octyltin bis(isooctyl mercaptoacetate), and so on. The thioglycolic acid tin in this type of stabiliser has excellent thermal stability and is used in large quantities. Among them, bis(isooctylthioglycolate)tin is recognised as a non-toxic stabiliser. However, it should be noted that the self-lubricating property of sulfur-containing organostannic stabilizers is poor, so it is usually necessary to add appropriate lubricants in practical applications.
In addition, organotin stabilisers can be divided into mono-, di- and ternary organotin compounds according to their chemical structure. These compounds have a wide range of applications in the processing and production of PVC, plastics, rubber, ink, asphalt, adhesives and polymer materials such as PE, PP, ABS, PC, PA, PBT and so on.
The main difference between various organotin stabilisers lies in their chemical structure, mechanism of action and application areas. They have their own characteristics, for example, the stabilising effect of thiol salts stabilisers is the best, while aliphatic acid salts and maleates stabilisers achieve stabilising effect through different reaction mechanisms respectively. In addition, different organotin stabilisers may also differ in terms of cost, toxicity and compatibility with other stabilisers.
Overall, the selection of a suitable organotin stabiliser requires consideration of specific application scenarios, material requirements and cost. In actual application, it needs to be selected and adjusted according to the specific situation in order to achieve the best stabilising effect.
Recommended Related Reading:
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