Organic bismuth catalysts
Product
Bi-16
Bi-20
Bi-28
Performance
1. Selective polyurethane gel catalysts;
2. Compared with tin catalysts, it has better selectivity to nco, and end productsmechanical performance is better;
3. Induction time is short, viscosity increases gradually.
Advantages of organic bismuth polyurethane catalysts
1. Safe & environmentally-friendly catalysts, can replace plumbum(pb) & mercury(hg) catalysts and tin catalysts which are being abolished by legislation;
2. Bi catalysts have a better stability to hydrolysis resistance than tin catalysts, reduce reaction selectivity with water, reduce sidereactions of nco group and water reaction in water-borne pu dispersing agent;
3. Promote the reaction of nco/oh , avoid sidereactions of nco and reduce co2 form;
4. In one-component system, emancipate the amine shielded by water, rather than promote the reaction of water and nco;
5. Combination of bismuth & zinc has synergy effect, making formulation and production more flexible, reducing energy consumption and increasing profits;
6. Can be used alone, or used together with amine or other organic metal compounds as auxiliary catalyst.
Dibutyltin dilaurate (dbtl)
Cas no.: 77-58-7
Mf: c32h64o4sn
Mw: 631.56
Physical property
Density: 1.066 g/ml at 25
Refractive index: 1.471 n20/d (lit.)
Viscosity: 35-55 cps/25
Freezing point: approx 15-20
Specifications
Appearance: colorless to pale yellow oil liquid
Tin content: 18.500.50
Chroma(pt-co):
Water: 0.50%
Characters
1. A multipurpose catalyst, is especially appropriate for cross-linking reaction of polyurethane and condensation reation of silanol, .
2. Can accelerate complete reaction of alcohol and isocyanic acid in the process of synthesizing polyurethane.
Additive amount0.05%-0.10%
Applications
1. Used in two-component polyurethane crosslinking coatings;
2. Used in room temperature vulcanization(rtv);
3. Used in the polyurethane rigid foams;
4. Can be used as a heat stabilizers for pvc heat shrinkable packaging film, semi-rigid transparent film, transparent tube and transparent door curtain, pvc snakeskin tube etc.
Storage
Kept in cool dry places, after use, lid airtightly timely, reducing contact with air.
Should avoid touching the skin, mucous membrane, if touched, wash immediately with plenty of water.
Packing25kg/ pastic drum, 200kg/drum
Htzn1: 19%
Htzn2: 23%
Performance
1. Compared with bismuth and zinc catalysts, reaction speed is slow;
2. Very effective crosslinked catalyst, surface of end products does not stick hand.
Use bi-zn composite catalysts to replace mercury catalysts and add zn to strengthen post curing
To satisfy requirements of adjusting gelling state or replacing mercury catalysts, we developed a dual metal bi-zn composite catalyst. In this kind of catalyst, bismuth provides gelling speed for curing to form polyurethane electively and rapidly; zinc as slower gelling and better crosslinked catalyst can reduce system acidity and promote crosslinking after accelerate reaction .
Users can adjust the gelling state by changing the two metas concentration in this system. Such as, by adding htzn1 (19% zinc) or htzn2 (23% zinc) to increase the zinc content in system, then to extend the operation time in reactor in induction period and promote post cure. Because the customersâ??reaction systems are different, the best rate of bismuth and zinc is also different. Remain bismuth unchanged , by adding different amount of zinc to test, control rate of bismuth and zinc between 1:1 to 1:10 proportion, to find out the rate of bismuth and zinc which is most suitable for own systems.
Butyltin tris(2-ethylhexanoate)
Cas no: 23850-94-4
Mf: busn(ooc8h15)3
Mw: 605.0
Physical property
Density: 1.13 g/cm3( at 25c)
Soluble in most organic solvent, insoluble in water
Specifications
Appearance: light yellow liquid
Sn: 19%-20%
Characters
1. A hydrolysis resistance catalyst;
2. Highly active catalyst for esterification reaction;
3. Mainly used for esterification and polycondensation reaction whose temperature is
210-240, and max reaction temperature can reach 25
4. Catalyst is neutral, not corrosive to the equipment;
5. After the reaction, without separation, it does not affect the quality of the final product.
Applications
1. Widely used in synthesizing saturated resin for powder coating and coil coating;
2. Used for aromatic polyol products for flexible pu foam and rigid pu foams;
3. Used for pbt engineering resin;
Additive amount
Suggest 0.05-0.25% of total reactant, and detailed quantity is subject to customers' production situation.
Storage
Kept in cool dry places, after use, lid airtightly timely, reducing contact with air.
Should avoid touching the skin, mucous membrane, if touched, wash immediately with plenty of water.
Packing
25kg/ plastic drum
Butylchlorodihydroxytin
Identification
Cas no.: 13355-96-9
Molecular formula: c4h11clo2sn
Molecular weight: 245.29
Specification
Appearance: white powder
Tin content: 47.0-49.0%
Ci content: 13.70-15.30
Water: 0.5% max
Application
1. It is a kind of efficient esterification catalyst of organic tin at the temperature from degree to 230 degree.
2. It will dissolve when the alcohol or carboxylic acid is in the heating reaction. The catalyst in the reaction will dissolve in the ester
3. It is widely used in the synthesis reaction of saturated and unsaturated polyester.
Package
25kgs / drum
Chelate tin
Model: htpc-2
Physical property
Density: 1.21-1.23
Viscosity: 10-50(mpa.S)
Melting point: 15-30
Specifications
Appearance: pale yellow oil liquid
Tin content: 27% -28%
Characters
1. A highly active organic tin which is chelated with imported advanced technology;
2. Its activity and catalytic velocity are much higher than dibutyltin dilaurate;
3. Curing rate is better than dibutyltin diacetate, smell is less and later storage is good;
4. Cure rapidly, it is more conducive to the later construction for some special products (note: this product can't touch water)
Applications
1. Suitable for two-component polyurethane crosslinked coating for automobile paint, industrial paint, finish paint.
2. Used for rtv silicone rubber, especially suitable for one-component silicone rubber, if the vulcanized products are heated in seal condition, they won't have the phenomenon of returning original.
Storage
Kept in cool dry places, after use, lid airtightly timely, reducing contact with air.
Should avoid touching the skin, mucous membrane, if touched, wash immediately with plenty of water.
Packing
25kg/ composite drum 50kg/composite drum
Dimethyldineodecanoatetin
Cas no.: 68928-76-7
Mf:c22h44o4sn
Mw:491.29
Physical property
Refractive index(25):1.460-1.470
Densityg/cm320:1.120-1.160
Specifications
Water0.5%
Chroma(pt-co):80
Appearanceclear viscous liquid
Sn%22.0%-24.5%
Applications
As efficient catalysts in the manufacture of polyurethane foam, coating, adhesive and sealant. For double polyurethane, polyester, nitro paint, ink, etc. Catalyst for the production of polyurethane plastic, polyurethane coating, silicone rubber, urged the dry agent and other purposes.
Packing
220kg/drum
Note
Store in cool, dry and ventilated place, transit to prohibit packaging damage and found damaged should be immediately sealed tight. This should prevent the entrance by splashing and skin should be promptly wash with plenty of water, the work site to have good ventilation.
Monobutyltin oxide (mbto)
Cas no.:2273-43-0
Mf: busnooh
Mw: 208.8
Physical property
It is insoluble in water and most organic solvent,
Only soluble in alkali and mineral acid.
Specifications
Appearance: white powder
Sn: 55-57%
Cl content: 1.0%
Loss on drying: 1.0%
Applications
1. Used for synthesizing saturated polyester resin.
2. Used for producing unsaturated polyester resin.
3. Used for producing polymer plasticizer.
Storage
Kept in cool dry places, after use, lid airtightly timely, reducing contact with air.
Should avoid touching the skin, mucous membrane, if touched, wash immediately with plenty of water.
Packing
25kg/ drum
Stannous octoate
Cas no.: 301-10-0
Mf: sn(c7h15coo)2
Mw: 405.1
Physical property
Density: 1.250g/ml (25?)
Refractive index: 1.492 (20?)
Specifications
Appearance: light yellow liquid
Tin content:28.0 %
Stannous content:27.25%
Viscosity: ¤380mpas(25?)
Characters
1. Is hydrolyzed and oxidated easily, can not be used in combination polyether ( premix material ).
2. Its catalytic activity is higher than dibutyltin dilaurate, its toxicity is low.
Applications
1. As catalyst for fexible pu foam, and also for polyurethane coating, elastomer, room temperature curing silicone rubber.
2. Used for medical supplies.
Storage
Kept in cool dry places, after use, lid airtightly timely, reducing contact with air.
Should avoid touching the skin, mucous membrane, if touched, wash immediately with plenty of water.
Packing
25kg/plasitic drum
