Hot polymerized emulsion styrene butadiene rubber
Ashland is the leading provider of crosslinked and non-crosslinked hot polymerized emulsion styrene butadiene rubber (eSBR) polymers for the adhesives and sealant industry.
Our non-crosslinked polymers are recommended for a variety of adhesive and sealant applications. When incorporated in a solvent along with appropriate tackifier, these polymers produce tacky cements for bonding, coating and sealing applications, including tapes and labels.
Our terpolymers partially crosslinked with divinylbenzene produce adhesives and sealants with a non-stringy, buttery consistency. They are particularly useful for caulking compounds, mastics and sprayable adhesives. Adhesives produced with polymers such as SBR 10090C, SBR 1009AF and SBR 4503 provide a clean breakaway when caulked or troweled. When used in expandable sealants, these polymers offer controlled expansion. These polymers produce extruded profiles with excellent dimensions (low die swell).
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Non-crosslinked eSBR rubbers can be handled by most mixers, although the efficiency will depend on mixer design, solvent solubility parameters and order of addition. An exception is SBR 1012; because it is a high molecular-weight polymer it requires high-shear mixing. Because of their structure, crosslinked polymers usually require greater shear energy to achieve a satisfactory blend.
For this reason, mixers with high-shear impellers circulating with high peripheral speed are recommended; good agitation is achieved even in high-viscosity solutions. Using our crumb rubbers simplifies mixing. as the resin and solvent can be added directly to the mixer. Because of the large surface area of the crumbs, incorporation of rubber and other ingredients is faster with milled or ground bale rubber.
The same mixers can be used with bale rubber, however milling or grinding is usually required first.
Sample formulations for adhesives and sealants
The following starting formulations demonstrate the versatility of our polymers. The final choice of polymers is dependent on the end-use application and its property requirement. Additional information on our hot and cold SBR polymers can be obtained by calling +1 800 962 8324.
|Pressure-Sensitive Adhesive||Pressure-Sensitive Adhesive||Pressure-Sensitive Adhesive|
|Ingredients, PHR||Ingredients, PHR||Ingredients, PHR|
|ISP SBR 1006||100||ISP SBR 1006||100||ISP SBR 1011||100|
|Piccolyte A 135||100||Piccolyte A 135||100||Zonatac NG98||100|
|Irganox 1520||2||Irganox 1520||2||Irganox 1520||2|
|% Solids||16.81||% Solids||16.81||% Solids||16.81|
|Brookfield Viscosity cP||210||Brookfield Viscosity cP||135||Brookfield Viscosity cP||95|
|PSTC 180° Peel, lbs/in||5.41||PSTC 180° Peel, lbs/in||4.8||PSTC 180° Peel, lbs/in||4.06|
|Loop Tack-PSTC 16A||0.75||Loop Tack-PSTC 16A, lb/in||1.56||Loop Tack-PSTC 16A, lb/in||2.83|
|Pressure-Sensitive Adhesive||Pressure-Sensitive Adhesive||Floor and Wall Tile Mastic|
|Ingredients, PHR||Sprayable Ingredients, PHR||Ingredients, PHR|
|ISP SBR 1011||100||SBR 1009AF||100||ISP SBR 1013||25|
|Zonatac NG98||100||ISP SBR 1009OC||25||ISP SBR 1009OC||75|
|Irganox 1520||2||Pentalyn H||95||Calcium Carbonate||40|
|Toluene||100||Irganox 1520||1||Dixie Clay||120|
|Hexanes||900||Cyclohexane||300||Coumarone Indene Resin||45|
|Total||1202||Naphtha (Benzine)||450||Piccolyte A 135||50|
|Brookfield Viscosity cP||80||% Solids||22.76||Total||557|
|PSTC 180° Peel, lbs/in||4.5||Brookfield Viscosity cP||4960|
|Loop Tack-PSTC 16A , lb/in||3.5||PSTC 180° Peel, lbs/in||1.02|
|Loop Tack-PSTC 16A||0.7|
|Caulking (Sealing) Cement||Floor and Wall Tile Mastic||Construction Mastic|
|Ingredients, PHR||Ingredients, PHR||Ingredients, PHR|
|ISP SBR 1013||25||ISP SBR 4503||100||ISP SBR 4503||50|
|ISP SBR 1009OC||75||CaCO3||40||SBS 1102||50|
|Agerite Superlite*||3||Dixie Clay||120||Kaolin Clay||130|
|White Mineral Oil||35||Coumarone Indene Resin||45||Calcium Carbonate||130|
|Atomite||150||Piccolyte A 135||50||Pentalyn H||123|
|Camel CARB||75||Antioxidant 2246||2||Antioxidant 2246||2|
|Solka Floc SW 40||5||Hexane||200||Heptanes||157|
|Stabelyte Ester 10||20||Total||557||Toluene||104|
|Aerosol spray adhesive||
1) Load 90 percent of the solvent and mix well.
|ISP SBR 1009AF2a||100|
a) SBR 1009 AF2 is a crosslinked crumb SBR with 23.5 percent bound styrene; this product contains between 3 to 5 wt % calcium carbonate as a partitioning agent to prevent the crumb blocking during storage and transport. The very high level of crosslinking in SBR 1009 AF2 makes this rubber particularly suited to aerosol spray applied adhesive formulations. The high gel content results in a clean cobweb-free spray pattern. SBR 4503 can also be substituted for 1009 AF if higher bond strength is required. The lower level of crosslinking in 4503 may also result in a greater tendency to cobweb when sprayed.
b) Pentalyn* H is a pentaerythritol ester based tackifier resin available with a ball and ring softening point of 94 to102 °C. If this is not available, then any pentaerythritol ester-based tackifier with a similar melting point should provide similar performance.
c) Pure n-hexane, free of cyclo-aliphatics, may not dissolve 1009 AF2 well. The best choice is a blend containing at least 10 percent cyclohexane
d) Irganox* 1520 is an antioxidant available from Ciba.
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Additional InformationNeed more information about this product?
Hot SBR polymers, non-crosslinked
SBR 1006 -- This light-color, low-gel polymer is recommended for general-purpose pressure-sensitive adhesives or as laminating adhesives.
SBR 1011 -- Similar to ISP SBR 1006, 1011 is emulsified with rosin acid and has excellent green tack. It exhibits a good balance of adhesion, cohesion and tack. SBR 1011 is an excellent polymer for pressure-sensitive adhesives.
SBR 1011AC – Has a lower solution viscosity than 1011.
SBR 1011AE – Provides high tack, for pressure-sensitive tape adhesives and tire bead wire.
SBR 1012 -- A high molecular weight product featuring high viscosity and high cohesive strength. It is particularly useful as a binder for fibrous materials. Its high Mooney viscosity and solution viscosity lend increased cohesive strength when added to an adhesive/sealant mixture.
SBR 1013 -- This high bound styrene (43.5 percent) polymer is recommended for paper saturation or as a barrier coat prior to the application of pressure sensitive adhesive. It is useful in blending with other elastomers to increase cohesive strength to provide higher green strength. It yields a stiffer adhesive film.
Hot SBR polymers, crosslinked
SBR 1009 – An adhesive grade, for automobile sealants and caulking.
SBR 1009OC -- Partially crosslinked with divinylbenzene, it produces smooth, non-stringy adhesives that break clean when gunned or troweled in place. The cohesive strength of 1009OC can be improved by blending with SBR 1013. SBR 1009OC offers well-controlled expansion and sag resistance when used with other low molecular weight polymers.
SBR 1009AF -- Contains much higher crosslinking than 1009OC. The result is that it is a workhorse for misting spray adhesives.
SBR 4503 -- This polymer is polymerized to the same degree of crosslinking as SBR 1009OC, but it contains higher bound styrene (30.0 percent). It is emulsified with rosin-acid and offers excellent cohesive strength and green tack.
Crumb polymers, non-crosslinked
1006, 1012 and 1013 -- Crumb rubber is produced in free flowing form which eliminates the need for milling, cutting or grinding equipment. The crumb particles retain the porous nature of the coagulated rubber and can be dissolved in a solvent faster than milled or pelletized bale rubber.
Crumb polymers, crosslinked
1009, 1009AF and 4503 -- Crumb rubber is produced in free flowing form which eliminates the need for milling, cutting or grinding equipment. The crumb particles retain the porous nature of the coagulated rubber and can be dissolved in a solvent faster than milled or pelletized bale rubber.
Ashland elastomers are manufactured to the highest standards at our plant in Port Neches, Texas, USA, where we continually turn out high volumes of products to meet customer demand. Significant investments in equipment, process improvements and staff have been made over the years, and we are committed to the continued production of quality SBR, using modern quality-control techniques. We have designed products specifically for the adhesives and sealant industry, efforts reflective of our commitment to the elastomer business.