Organotin compounds with at least one tin-sulphur bond are generally called organotin mercaptides or sulphur-containing tin stabilizers or thiotins. Organotin compounds, which are derivatives of carboxylic acids, mainly maleic acids or semi-esters of maleic acids are usually known as organotin carboxylates, and the corresponding stabilizers are called sulphur-free tin stabilizers.

These are the general purpose stabilizers which contribute excellent heat stability as well as outstanding crystal clarity. They are used for all the non-food contact applications of Rigid as well as plasticized PVC.

Patstab 2202: Is the standard butyl  Tin Mercaptide  Stabilizer with very high performance. It provides excellent heat stability as well as maximum crystal clarity. It is used for both flexible as well as Rigid PVC applications such as clear rigid calendaring, injection moulding,  extrusion as well as plasticized applications.

Patstab 2204:   Is a general purpose cost effective stabilizer system. Patstab 2204 offers balance of performance with high levels of clarity. It is used for all the general purpose application especially rigid and flexible blown film production.

Patstab: 2206: Is a stabilizer system,less powerfull than Patstab 2202. It is mainly used for general purpose extrusion,Rigid foam boards as well as blown film applications.

Patstab: 2209: Is a cost effective Butyl Thiotin stabilizer recommended for flexible/semi-rigid blown films. It can also be efficiently used for general purpose crystal clear plasticized extrusions.

Octyl Thiotins are the primary choice of stabilizer for many rigid PVC applications where food contact approval, crystal clarity and good colour control are important. These products offer excellent clarity and superior heat stability in both rigid and flexible PVC applications.

Patstab: 2301:  Is the standard high performance Octyl Thiotin stabilizer, offering excellent heat stability and crystal clarity. It is produced in accordance with BfR guidelines and EU directives to meet food contact and non-toxic applications requirements.

Patstab: 2301B: Is the standard high performance Octyl Thiotin stabilizer, offering excellent heat stability and crystal clarity. It is produced in accordance with BfR guidelines and EU directives to meet food contact and non-toxic applications requirements.

Patstab: 2303: Is a cost effective Octyl Thiotin stabilizer especially formulated for blown films and sheets production. It provides balance heat stability as well as high clarity. Patstab 2303 is produced in accordance with BfR guidelines and EU directives to meet food contact and non-toxic applications requirements.

Patstab: 2305: Is a liquid Octyltin Mercaptide stabilizer suitable for calendaring of rigid and semi-rigid sheets and films. It is specially formulated to provide balance stability at affordable cost. It is a suitable stabilizer for producing food and pharma packaging.

Patstab: 2307:Is a liquid Octylin Mercaptide stabilizer with outstanding early colour having higher mono alkly tin content. It is used for preparing crystal clear PVC articles with highest early colour and transparency.

The following grades of Organotin Carboxylates are offered by PATCHAM:

Patstab 2001:  Is recommended for non-food technical applications. They are suitable for crystal clear blown rigid film and sheeting for outdoor weathering applications, profiles, floor coverings and coil coating.

Patstab 2002: is a high performance Butyl Tin Carboxylate stabilizer recommended for Flexible clear as well as opaque applications. It provides high weatherability and outdoor performance. It is also used for rigid opaque sheet manufacturing.

Liquid Metal Soap Stabilizers are complex mixtures of various metal salts of aliphatic and aromatic carboxylic acids and a wide range of non-metallic performance additives.

Carboxylates are mostly used in combination: Barium compounds with Zinc or Cadmium compounds and Calcium with Zinc compounds, as these are synergistic thermostabilizers.

The following grades of  Barium/Cadium  are offered by Patcham

Patstab 105: (Ba/Cd): Is a grade which provides balance performance. It imparts high early colour as well as good term stability. It is an appropriate choice for all the general purpose “s” PVC plasticized and semi-plasticized applications where transparency, long-term stability .

Patstab 106:   (Ba/Cd): Is a superior grade. It imparts very high early colour, transparency, considerable long term stability and colour hold. Patstab 106 is most suitable for clear flexible and semi-flexible calendaring and clear moulding. Demanding plastisol applications etc.

Patstab 107:(Ba/Cd): Is an economical grade, provides the best cost performance ratio for mainly flexible extrusion. It provides high early colour and reasonably acceptable long-term stablility.

The following grades of  Barium/Cadium  are offered by Patcham

Patstab 202   (Ba/Cd/Zn): Is a very high quality stabilizer. It provides excellent early color, color hold and length of stability. It is highly recommended for clear unpigmented applications where high transparency and long term stability is primary requirement

Patstab 205: Is a balanced general purpose stabilizer. It provides good early color, colourhold as well as reasonable long term stability. Patstab 205 is used mainly for extrusion of hoses, injection moulding as well as leather cloth.

Barium Zinc Stabilizer system are widely used as an alternative to Cadmium containing compounds in plasticized PVC.

The following grades of Barium Zinc Stabilizers are offered by PATCHAM:
Patstab 301   Is a nonyl phenol free, low V.O.C. very low phenol containing stabilizer. It provides high early colour, color hold and high long terms stability. It is suitable for plastisol applications mainly for the base coat of floorings, wall coverings. It can also be used for most general purpose “S” PVC applications.

Patstab 302: Is a high performance general purpose stabilizer exhibiting good balance of performance. It provides high transparency as well as long term stability. It is widely used for all the general purpose “S” PVC applications such as transparent calendaring, extrusion, and moulding.

Patstab 303: Is a low phenol, low V.O.C nonly phenol free stabilizer. It provides excellent transparency and colour hold at little expense of long term stability. It is most suitable for plastisol top coat application where crystal clarity and transparency is the prime requirement.

Patstab 306: Is a stabilizer suitable for all the general purpose and demanding application where balance of early colour, transparency and long term stability is the pre-requisite. It is a grade suitable for flexible and semi-rigid transparent calendering, wall covers, floorings, etc.


Patstab 307: Is a nonyl phenol free, low free phenol stabilizer exhibiting considerably long heat stability at little expense of early clarity. It is ideally suitable for base coat plastisol applications. It also can be used for general purpose clear as well as highly filled “S” PVC applications.

Patstab 314:  Is an excellent self-lubricating stabilizer. It is phenol free and very low on free phenol. It exhibits very high early colour as well as crystal clarity. It also provides excellent long term stability.


Patstab 317BK:  Is a high performance stabilizer which provides high early colour as well as excellent long term stability. It is most suitable for all general purpose applications, mainly clear calendaring, injection moulding, spread coating and extrusion.


Patstab 318: It is a high performance self- lubricating nonyl phenol and free phenol free stabilizer performing excellent for crystal clear calendaring as well as general purpose applications.


Patstab 320: It is a general purpose stabilizer. It provides a balance of performance as well as good economics for all general purpose applications.


Patstab 324: Is an economical stabilizer system which gives excellent cost performance benefits to the processor. It provides balance of early colour and crystal clarity with reasonably good long term stability. It is suitable for all the general purpose applications particularly extrusion of hoses, spread coating, rotational moulding, coated fabrics, etc.


Patstab 329: It is a high performance stabilizer. It provides very high early colour and transparency as well as reasonable long term stability. It is very well suitable as a top-coat stabilizer for floor covering. It can also be used for general purpose “S” PVC applications.


Patstab 333: Is a high performance stabilizer which provides very high early clarity and excellent transparency along with outstanding long term stability. It can be used for all the general purpose clear transparent applications as well as for plastisol applications.


Patstab 336: Is one of the most economical general purpose stabilizers with balance of clarity and long term stability. It can be used for general purpose extrusion of hoses, flexible injection moulding, etc.

Ca/Zn stabilizers are systems which are free from heavy metals. The non-toxic grades are formulated using permitted calcium and zinc salts with other food contact approved additives. These systems are used for processing non-toxic, food packaging as well as toys.

PATCHAM offers liquid stabilizer systems of Ca/Zn:

Patstab 401  Is a low toxic system ideally suitable for general purpose flexible applications such as extrusion, injection moulding and plastisol spread coating. It exhibits reasonable early colour as well as moderate long term stability.

Patstab 403: Is a high performance low toxic system. It exhibits good early colour as well as long term stability. It is suitable for general purpose flexible applications such as extrusion, calendaring and general purpose plastisol applications.

Patstab 409   Is an excellent non-toxic system. It is suitable for producing food contact products such as packaging, injection moulded articles, extruded tubes, etc. It provides a balance of clarity as well as long term stability.

Patstab 411: Is a high performance non-toxic system. It provides very high clarity and long term stability. It is suitable for all non-toxic applications such as food packaging, blood bags and other medical applications, toys, etc.

Patstab 415:  Is an excellent low toxic system. It provides very high early colour as well as considerable good long term stability. It is suitable for both “S” PVC and plastisol applications.

Calcium / Zinc Stabilizers are systems which are free from heavy metals. The non-toxic grades are formulated using permitted calcium and zinc salts with other food contact approved additives. These are used for processing non-toxic, food packaging as wee as toys.

The following grades of Calcium / Zinc Stabilizers are offered by PATCHAM:

Patstab 401  Is a low toxic system ideally suitable for general purpose flexible applications such as extrusion, injection moulding and plastisol spread coating. It exhibits reasonable early colour as well as moderate long term stability.

Patstab 403: Is a high performance low toxic system. It exhibits good early colour as well as long term stability. It is suitable for general purpose flexible applications such as extrusion, calendaring and general purpose plastisol applications.

Liquid Barium / Lead mixed stabilizers are economical stabilizer systems with good performance. Used for the applications where crystal clarity is not required and the restrictions on lead do not prevail.

Patcham offers the following grades of Ba/Pb.

Patstab 504  Is a general purpose stabilizer suitable for flexible applications where high clarity is not a priority. It is an economical product mostly used for opaque extrusion as well as injection moulding.

Patstab 505: Is an economical general purpose stabilizer. It provides high clarity as well as good long term stability. It is suitable for general purpose extrusion of garden hoses as well as flexible injection moulding.

The most common co-stabilizer based on Epoxy compounds are Epoxidized Soyabean Oil. Due to the phenomenon of synergistic  effect, the stabilization efficiency of liquid metal soaps stabilizer systems is considerably improved by the addition of epoxy co-stabilizer. Addition of this compound also prevents the sudden blackening of formulations containing Zinc (Zinc burning). This co-stabilizer in combination with metal carboxylates is not only able bind hydrogen chloride but is also able to substitute labile chlorine atoms under the catalytic influence of Cadmium or Zinc ions.


Patcham offers Patstab 901: (Epoxidized soyabean Oil) is of low odour and light colour. It is an excellent co-stabilizer to be used in conjunction with all Patstab metal carboxyl ate stabilizers.

Production of foamed PVC articles by regulated decomposition of chemical blowing agent such as Azodicarbonamide (AZDC) is well known. Applications include PVC wall covering and a variety of supported and unsupported sheeting.

The decomposition temperature of AZDC byitself is over 200°C, which is above the normal processing temperature of PVC. However by usage of suitable activators the decomposition temperature could be substantially reduced to facilitate smooth processing of PVC.

PATCHAM offers a range of Cd/Zn, K/Zn, Ba/Zn and Ca/Zn based liquid stabilizer systems also known as Kickers, which apart from stabilizing function, also act as activators for chemically foamed PVC.

PATSTAB

305

309

601

602

701R

702

703A

703B

Type

Ba/Zn

Ba/Zn

Cd/Zn

Cd/Zn

K/Zn

K/Zn

K/Zn

K/Zn

Appearance

Clear to slight hazy liquid

Clear Liquid

Clear Liquid

Clear Liquid

Liquid

Liquid

Clear Liquid

Clear Liquid

Colour

Gardner 6

Gardner 11

Gardner 4 (Max)

Gardner 2 (Max)

Gardner 4 (Max)

Gardner 3 (Max)

Gardner 2

Gardner 2

Specific Gravity @ 25’C approx

1.000

0.975

0.895

0.890

1.070

0.960

1.090

1.090

Strength

Medium
Fast/
Stabilizer

Medium
Fast/
Stabilizer

Medium
Fast

Medium
Fast

Fast

Medium
Fast

Fast/ Low
Flash
Point

Fast/ Low
Flash
Point

Patstab 1001 is a novel, antimony mercaptide stabilizer system for rigid pipes and pipe fitting applications. It can also be used for plasticized clear and filled applications.

Optimum results are obtained when used in twin screw extrusion of pipes as well as injection moulded pipe fittings.

The advantage of using Patstab 1001 is the low dosage levels as compared to Lead and Tin stabilizers . Best results are obtained when used with Calcium Stearate due to the exceptional synergy of the two materials. In comparison with lead stabilizers, Patstab 1001 gives much greater heat stability.

Improved U.V. resistance can be achieved by increased dosage of titanium dioxide in the formulation with Patstab 1001. Also the sulphur staining is much less than lead based stabilizers.

At low temperatures Patstab 1001 performs very well as compared to Methyl and Butyl Tin as well as Lead based stabilizers.

At low dosage levels, Patstab 1001 surpass the efficiency of Butyl and Methyl Tin Mercaptide stabilizers.

Patstab 1001 can also be used for plasticized clear as well as filled applications. It is effective for extrusion of transparent tubes and hoses and flexible blown films.