Vulcanization agent poly alkyl phenol disulfide VA-TB710

 

Composition:Para-tert-butylphenol disulfide(90 % ) + sulfur(< 3 %)+stearic acid(10%)

 

CAS NO.:60303-68-6

 

Synonym:

Mixture of tert-butylphenol disulfide polymer and stearic acid;

Arkema Vultac TB710 equivalent;

Poly-tert-butylphenol disulfide;

poly-alkyl phenol disulfide polymer;

alklyphenol disulfide polymer;

Para-tertiobutylphenol Disulfide Polymer; Alkylphenol disulfide polymer;

Para-tert-butylphenol disulfide polymer;

Tert-butylphenol disulfide polymer;

Alkylphenol disulfide polymer sulfur donor;

Alkylphenol disulfide oligomer;

Curing Resin

  

Specification:

Item	Standard	Test Way
Appearance	brown pastilles or powder	Visual
Sulfur content, %	26.4-28.4	Combustion
Softening point, ℃	75-95	Ring & Ball
Stearic acid content,%	9.0-11.0	FTIR

 

Application: 

①　Alkylphenol disulfide polymer VA-TB710 is a Sulfur donor for natural and synthetic rubbers.

②　Alkylphenol disulfide polymer VA-TB710 produces a high percentage of mono-sulfidic crosslinks that results in vulcanizates with superior aging characteristics.

③　Alkylphenol disulfide polymer VA-TB710 can be used as either complete or partial replacements for sulfur and thiuram and DTDM sulfur donors in EV and semi-EV type cure systems.

④　In tires Alkylphenol disulfide polymer VA-TB710 is used in the inner-liner, chafer,bead apex, sidewalls, and tread.

⑤　Industrial applications include noise damping blocks, motor mounts, dock fenders, elastic threads, automobile engine hoses, gaskets, belts, and other industrial rubber products that require good heat resistance.

⑥　Alkylphenol disulfide polymer VA-TB710 also aid in rubber processing.

⑦　Alkylphenol disulfide polymer VA-TB710 polychloroprene vulcanizates have improved flex life.

⑧　Alkylphenol disulfide polymer VA-TB710 is also an excellent bleaching agent,antioxidant,catalysts in the disproportionation of rosin or rosin esters.

①　Dosage: 0.5~20 phr.2 phr is most preferably

 

Characteristics:

①　Polymers: Natural rubber and synthetic elastomers. Especially good in curing rubber that contains chlorine such as chlorobutyl and polychloroprene.

②　Synergism: Can be used with most typical rubber accelerators and sulfur. When used as a partial replacement for sulfur, Alkylphenol disulfide polymer TB710 tends to improve dispersion of other additives in the rubber.

③　Crosslink Type: Alkylphenol disulfide polymer TB710 promotes mono-sulfidic crosslinks resulting in vulcanizates with excellent heat and aging resistance.

④　Non-nitrosamine: Alkylphenol disulfide polymer TB710 does not produce nitrosamines like many of the other sulfur donors such as DTDM and the thiurams.

 

Advantages:

①　Non-nitrosamine

②　Lower tack to make it easier to stock and handle

③　Lower volatility

④　Lower volatile degradation products

⑤　Good compatibility with many rubber polymers

⑥　Very good antioxidant properties

⑦  Improve heat age properties of vulcanizates because of its generation of mono- and di-sulfic crosslinks

⑧　Increase the resinous plasticizer during processing

⑨　Increase the green tack in NBR,BR and SBR based compounds

⑩　Improve the dispersion of other compound ingredients into rubber

 

Package:

25kgs/paper drum;25kgs/kraft bag or as customer’s request;

Storage: 

It should be stored in dry & cool environment(below 86 °F/30℃) in closed original containers.

 

Shelf Life:

2 years if stored as indicated above

 

Vulcanization Agent Caprolactamisulfide (DTDC)

 

CAS NO.:23847-08-7

 

Chemical Name:

(LANXESS Rhenogran®CLD 80 equivalent)

Dithiocaprolactame;CLD;1,1,-Dithiobis(hexahydro-2H-azepin-2-one);

Caprolactamdisulfide; 80% Caprolactamdisulfide in a polymer binder system;

LANXESS Rhenogran®CLD 80

 

Formula:C₁₂H₂₀N₂O₂S₂

 

Molecular Weight:288.423

 

Chemical Structure:

 

Specification:

Item	Standard
Appearance	White to yellowish powder
Melting area	≥120℃
Heat loss at 60 ℃	≤0.5
Ash at 900 ℃	≤0.5
Mesh residue(150um)	≤0.1

 

Application Application and characteristics:

Caprolactamdisulfide is a not discolouring sulfur donor for natural and synthetic rubber and latex, especially for low sulfur vulcanization,salt bath vulcanization,injection moulding and for vulcanization of thick-walled products.it providess mono-and di-sulfur bridges which are more stable than those formed by elemental sulfur.In contrast to other sulfur donors caprolactamdisulfide does not form nitrosamines which can cause cancer and is thus a very safe rubber additive.

 

Package and storage: 

25kgs/bag or as customer’s request;

 

Storage: 

Stock it in well-ventilation cool, dry area.

 

Shelf life:

2 years if store as above indicated conditions

Antioxidant 300

Antioxidant 300 is a kind of multi-functional and high efficient main antioxidant which has perfect performance not matter it is used alone or together with other additives as it has double effects of free radical termination and hydrogen peroxide decomposition.

 

CAS NO.: 96-69-5

 

Chemical Name: 

4,4′-Thio-bis(6-tert-butyl-m-methyl phenol); 4,4′-sulfanediylbis(2-tert-butyl-5-methylphenol); Rubber Antioxidant 3004, 4’–Thio-bis (3-methyl-6 tert-butylphenol)

 

Formula: C22H30O2S

 

Molecular Weight: 358.5374

 

Chemical Structure:

 

 

Specification:

Item	Standard
Appearance	White crystalline powder or granular
Melting area	160℃~163℃
Heat loss	≤0.5%
Ash content	≤0.1%
Mesh residue(150um)	≤0.1

The magnificent synergistic effect with other additives as following:

①　synergistic effect With carbon black:regular hindered phenol and hindered amine antioxidants (such as 1010, TCA, DNP)can be absorbed by the surface of carbon black when are used together with carbon black.this antagonistic effect will reduce the stability of the polymer. But it is completely different for  sulfur-containing hindered phenol antioxidant 300.when antioxidant 300 be used together with carbon black they are transferred into chemical compounds with greater antioxidant efficacy under the catalysis of carbon black that enhances stability of the polymer.

②　synergistic effect With other antioxidant such as 1010,TCA,DNP: different formulations can be made according to customer’s special request which can reduce the cost but can enhance the comprehensive staility of the polymer and finished goods.

③　synergistic effect with UV absorber which enhance the heat resistance,stability and shelf life of the products

 

Package and storage: 

25kgs/bag;

25kgs/paper drum;

20kgs/carton box;

900kgs/big bag;

or as customer’s request;

 

Storage: 

Stock in well-ventilation cool, dry area.

 

Transportation:

Antioxidant 300 is not a dangerous goods according to transportation regulation

 

Shelf life:

2 years is stored as above condition