ADCOTHERM™ PIB 2 is a gray polyisobutylene based sealant that exhibits excellent long-term stability and remains permanently flexible, even at low temperatures. Like all ADCOTHERM™ PIB sealants, ADCOTHERM™ PIB 2 exhibits low argon permeability and inherently low moisture vapor transmission along with excellent adhesion to aluminum, stainless steel and tin-plated steel spacer substrates.

Performance Properties
Typical Values		Test Method
Moisture Vapor Transmission	0.2 g/m2/24 hr		ASTM F1249 2mm thickness
Press Flow Extrusion Viscosity	26 seconds		ASTM D2452 110oC (230oF), 8.6mm orifice
Physical Properties
Cone Penetration	45 dmm		ASTM D217, 150g added load
Solids Content		100%
Specific Gravity	1.16		ASTM D71
Weight per gallon		9.7 lb
Application Properties
Service Temperature		-45 to 80oC (-50 to 176oF)
Suggested Application Temperature		110 to 140ºC (230 to 285ºF)

NOTE:

The foregoing information is published as general information only. The listed properties and performance characteristics are typical values and are not to be interpreted as manufacturing specifications.

Superior compression resistance	Allows for stacking of window units during build without increased risk of failure
Low moisture vapor transmission rate (MVTR)	Increased unit life expectancy
Excellent resistance to weathering	Does not degrade upon exposure to environmental conditions
Low gas permeability	Increased argon gas retention beyond industry standards
Excellent adhesion to glass, stainless, aluminum, tin-plated steel, and many plastics	Can be used with all commercially accepted metal spacer systems and most plastic spacer systems
Ultra low volatile content	No chemical fogging. No discoloration of low-e coatings
Dedicated gray PIB manufacturing line	No black streaking in product

ADCOTHERM™ PIB 2 is specifically formulated to be used as a primary sealant in insulating glass units which are produced via horizontal or stacked methods. PIB 2 compression properties have been optimized to provide sufficient wet-out after pressing while minimizing over-compression issues in a bottom-of-the-stack unit. ADCOTHERM™ PIB 2 exhibits reduced flow versus other PIB offerings when submitted to a set pressure.

ADCOTHERM™ PIB 2 has very low moisture vapor transmission rates (MVTR) and gas permeability rates. Properly constructed dual-seal units incorporating ADCOTHERM™ PIB 2 will retain argon insulating gas and maintain a dry interior unit airspace for decades. Insulating glass units produced with ADCOTHERM™ PIB 2 routinely pass ASTM E2188, E2189, E2190 (HIGS) standards.

ADCOTHERM™ PIB 2 is designed for use on manual extrusion equipment. PIB 2 may be used with most commercially available urethane, silicone, polysulfide, or butyl hot melt insulating glass secondary sealants.

Application Instruction

See ADCOTHERM™ PIB Application Guidelines

Limitations

• ADCOTHERM™ PIB 2 is not intended for use as a structuralsealant.
• ADCOTHERM™ PIB 2 is not intended for use on fully-automated, high-volume extruders.
• ADCOTHERM™ PIB 2 is not resistant to attack by solvents,oils, and plasticizers. When constructing IG with siliconesecondary sealants, care must be taken to insure that theglazing environment (including setting blocks, compressiongaskets, glazing sealants, and weatherproofing sealants) isfree from solvents, oils and plasticizers. These chemicals canmigrate through silicone secondary sealants and attack theprimary sealant resulting in premature IG unit failure.

• The surfaces to be bonded must be dry, clean and free from dust and grease. Glass surfaces should be thoroughly cleaned by hand or machine with non-film forming, low residue detergent and rinsed thoroughly with clean hot water.

Glazing Compatibility

It is recommended that glazing materials be tested for compatibility and that all units be glazed in accordance with GANA (Glass Association of North America) and IGMA

(Insulating Glass Manufacturers Alliance) recommendations. Contact with any solvent, oil, or plasticizer-containing glazing materials should be avoided.

ADCOTHERM™ PIB 2 is available in the following standard packages:

Physical Form                        Part #

15.0 lb (6.8kg) slug         PB-040G-60

Storage and Shelf Life

Store material in original unopened packaging at temperatures between 40°F-100°F. Shelf life is 24 months when stored as recommended.

Prior to working with this or any product consult product label and Material Safety Data Sheet (MSDS) for necessary health and safety precautions.

CAUTION:
All statements and technical information in this document are based on tests or data that ADCO believes is reliable. However, ADCO does not warrant or guarantee the accuracy or completeness of this information. The user has sole knowledge and control of factors that can affect the performance of ADCO’s products in the user’s intended application. It is the user’s

responsibility to conduct tests to determine the compatibility of ADCO’s product with the design, structure, and materials of the user’s end product and the suitability of ADCO’s product for the user’s method of application and intended use. The user assumes all risk and liability arising out of such use.

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