SN242

[Polychloroprene SN242 Grade]

[Neoprene Rubber SN242]

what is neoprene?

SN242 is a mercaptan modified chloroprene rubber with excellent adhesive strength and producod using a Nairit recipe and process technolongy. SN242 has a high crystallization rate and can be seen as an equivalent to the AD-20 grade from DuPont.

 

A. Properties and Characteristics

 

SN242 grade polyohloroprene has a fast rate of crystallization and its formulations exhibit high lnitial and uitimate bond strengths. Of the SN24x series, this grade has a medium viscosity, and has a much better solubility and homogoeneity than CR244. It can be used for light colored adhesives with adequate stability. Adhesive formulations besed on SN242 exhibit excellent film forming properties and rapid bond formation while the films are easily and safely processed for longer times. can be dissolved in toluene of mixed solvents. SN242 exhibits the good oil resistance, chemical resistance, ozone and aging resistance as well as the sunlight resistance, typical of polychloroprene.

 

B. Specifieations

 

According to standard Q/SNYF02.11_2009

 

A Correlation of SN242 with Major Competitive Grades

 

Shanna   DuPont   DENKA   Lanxess

SN242      AD-20        A90        330

 

1. Appearance: White or light yellow chips. No solid impurities except talcum.

 

2. Typical Polymer Properties

 

Brookfield viscosity(25° C, 5% toluene solution): 35-53

 

Volatiles(wt. %): ≤ 1.3

 

Ash (wt. %): Le; 1.0

 

C. Applications

 

SN242 is a basic raw material for adhesive formulation, lt can be used alone or mixed with other grades to achieve the desired viscosity. As an adhesive raw material it finds wide application in the shoe industry as well as for bonding leather, wood, meta and construction materials.

Shanna	DuPont	DENKA	Lanxess
SN242	AD-20	A-90	330

Related links

Polychloroprene Rubber SN242. pdf