{"id":8849,"date":"2018-09-28T08:00:57","date_gmt":"2018-09-28T14:00:57","guid":{"rendered":"https:\/\/www.ulprospector.com\/knowledge\/?p=8849"},"modified":"2018-10-05T09:49:36","modified_gmt":"2018-10-05T15:49:36","slug":"pc-head-scratcher-qatar-coating-quandary","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/8849\/pc-head-scratcher-qatar-coating-quandary\/","title":{"rendered":"Head Scratcher: Qatar Coating Quandary"},"content":{"rendered":"

Background<\/h3>\n

In this Head Scratcher, you are a paint company\/R+D chemist, and your largest contracting customer has been given the contract to paint the largest hotel in Qatar, with over 500 rooms on 40 floors. Until recently, it was a smoking only hotel, so the ceilings and walls of every room look like the pictures below.<\/p>\n

\"Smoke
Smoke damage to wall and ceiling coatings<\/figcaption><\/figure>\n

You have to provide products for the following five surfaces\/situations. Your task as a manufacturer\/chemist is three-fold:<\/p>\n

    \n
  1. Identify what traits the five different products need to have<\/li>\n
  2. Adjust three starting formulations to give the desired properties, considering that the customer wants the paint to meet the EU 2010 rules for volatile organic compounds (VOC)<\/li>\n
  3. Determine how biocide choices change if you also follow EU Rule 43 rules on incan and dry film biocide<\/li>\n<\/ol>\n

    Surface 1: Room and passage walls and ceilings<\/h3>\n

    The customer wants a primer. Which is more important: adhesion\/penetration or stain blocking?<\/p>\n

    Solution:<\/strong> Actually both are very important so you have two real choices:<\/p>\n