INTJ personality traits are not usually considered ideal as far as parenting is concerned. INTJs tend to be very rational, perfectionistic, and relatively insensitive individuals, which goes against the stereotypical image of warm, caring, traditional parents.
However, it could be said that this is simply a reflection of the fact that society is dominated by more sensitive and traditional personality types. In contrast, INTJ parents are more likely to focus on making sure that their children grow up to be able to make independent and rational decisions.
Not surprisingly, people with the INTJ personality type will probably have difficulties supporting their children emotionally. INTJs are used to suppressing their own emotions and will struggle if their child is very sensitive. There are many other personality types that have difficulties in this area, but INTJ personalities are likely to find this especially difficult.
That being said, most INTJ parents will be able to ensure that their children are very well prepared to deal with the challenges that life throws their way. They will likely be demanding yet liberal and open-minded parents, encouraging their children to develop and use their own mind instead of trying to protect them from the world as long as possible.