Functionalized Polymer Polyols

Title: COPOLYMER POLYOL WITH FUNCTIONAL ADDITIVE IN DISPERSED PHASE

 Number/Link: WO2017/053064

Applicant/Assignee: Dow

Publication date: 30-mar-2017

“Gist”: Polymer polyols are prepared by melt-dispersion of functionalized polystyrene in a carier polyol.

Why it is interesting: The preparation of polymer polyols by melt-dispersion is known and has been discussed before in this blog. According to this invention the thermoplastic to be dispersed is first pre-compounded with one or more ‘functional components’, like pigments, flame ratardants, high density fillers, etc. In the examples polystyrene is compounded with additives like TiO2 and flame retardants in a twin-screw extruder combined with a pelletizer. The molten pellets are then dispersed under shear in a polyether polyol together with a stabilizer.  The stabilizer is a copolymer prepared from an unsaturated branched polyol and styrene.
The polymer polyols are useful for the production of PU flexible foams and elastomers.

dowpolpol

SEM image of polymer polyol according to the invention

Leave a comment
by Gerhard Bleys on April 3, 2017  •  Permalink
Posted in Uncategorized

Posted by Gerhard Bleys on April 3, 2017

https://purpatents.com/2017/04/03/functionalized-polymer-polyols/

Previous Post
Next Post
Leave a comment

Leave a Reply

Fill in your details below or click an icon to log in:

Gravatar
WordPress.com Logo

You are commenting using your WordPress.com account. ( Log Out /  Change )

Google photo

You are commenting using your Google account. ( Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. ( Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. ( Log Out /  Change )

Cancel

Connecting to %s

  • Pages

  • Categories

  • Enter your email address to follow this blog and receive notifications of new posts by email.

    Join 1,085 other followers

  • Follow Innovation in PU on Twitter