GB/T 12009.4-2016 Active National standards

GB/T 12009.4-2016 Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 4:Determination of isocyanate content

GB/T 12009.4-2016 Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 4:Determination of isocyanate content

Publish Date: 2016-02-24 Implement Date: 2016-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12009.4-2016

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Raw materials for rubber and plastics

Publish Date: 2016-02-24

Implement Date: 2016-09-01

Pages: 9 pages

Scope

This part of GB/T 12009 specifies two methods for determining the content of isocyanate groups in aromatic isocyanates used in the production of polyurethane.
Method A of this part is suitable for refined toluene diisocyanate (hereinafter referred to as TDI), diphenylmethane diisocyanate (hereinafter referred to as MDI), polymeric MDI, and their prepolymers; Method B is suitable for refined, crude, or modified isocyanates obtained from TDI, MDI, and polymeric MDI, and also for mixtures of isomers of TDI, MDI, and polymeric MDI. Other isocyanates that have been proven to be suitable can also be tested using this method.
This part is not applicable to capped isocyanates.

Development Information

Word Count: 18 Thousand words Pages: 9 pages

Same series standard

GB/T 12009.2-2016 Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 2:Determination of hydrolysable chlorine GB/T 12009.5-2016 Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 5:Determination of acidity

Replace the following standards

GB/T 12009.4-1989 Polymethylene polyphenyl isocyanate—Determination of isocyanate content

Referenced Standards

GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 12009.5-1992 Isocyanates—Determination of acidity GB/T 12009.5-2016 Plastics—Aromatic isocyanates for use in the production of polyurethane—Part 5:Determination of acidity

Adopt standards

ISO 14896:2009

Related Standards

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GB/T 16867-1997 Active

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GB/T 30914-2014 Active

GB/T 30914-2014 Styrene-isoprene-butadiene rubber(SIBR)—Determination of the microstructure

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