Obsessive-compulsive personality disorder (OCPD), or anankastic personality disorder, is a personality disorder that is characterized by a general psychological inflexibility, rigid conformity to rules and procedures, perfectionism, moral code, and/or excessive orderliness.
Obsessive-compulsive personality disorder (OCPD) is often confused with obsessive-compulsive disorder (OCD). OCD is ego-dystonic where OCPD is ego-syntonic. This is to say, those with OCD know their behavior is problematic where the symptoms of OCPD are part of a person's personality and are generally unaware of problematic behaviors.
Those who are suffering from OCPD do not generally feel the need to repeatedly perform ritualistic actions (such as excessive hand-washing), while this is a common symptom of OCD. Instead, people with OCPD tend to stress perfectionism above all else, and feel anxious when they perceive that things are not "right".
People with OCPD may hoard money for future use, keep their home perfectly organized, or be anxious about delegating tasks for fear that they won't be completed correctly. There are four primary areas that cause anxiety for OCPD personalities: time, relationship, uncleanliness, and money. There are few moral gray areas for a person with OCPD; actions and beliefs are either completely right, or absolutely wrong. As might be expected, interpersonal relationships are difficult because of the excessive demands placed on friends, romantic partners, and children.

The DSM-IV-TR, a widely used manual for diagnosing mental disorders, defines that for a patient to be diagnosed with obsessive-compulsive personality disorder, they must exhibit at least four of the following traits:
Preoccupation with details, rules, lists, order, organization, bodily functions, or schedules to the extent that the major point of the activity is lost
Showing perfectionism that interferes with task completion (e.g., is unable to complete a project because his or her own overly strict standards are not met)
Excessive devotion to work and productivity to the exclusion of leisure activities and friendships (not accounted for by obvious economic necessity)
Being overconscientious, scrupulous, and inflexible about matters of morality, ethics, or values (not accounted for by cultural or religious identification)
Inability to discard worn-out or worthless objects even when they have no sentimental value
Reluctance to delegate tasks or to work with others unless they submit to exactly his or her way of doing things
Adopting a miserly spending style toward both self and others; money is viewed as something to be hoarded for future catastrophes
Showing rigidity and stubbornness
Urge to perfect every little thing
It is important to note that while a person may exhibit any or all of the characteristics of a personality disorder, it is not diagnosed as a disorder unless the person has trouble leading a normal life due to these issues.

Info Source, Links and more info:
http://en.wikipedia.org/wiki/Obsessi...ality_disorder

People with OCPD don’t usually participate in rituals like people with OCD. People with OCPD are often obsessed with being perfect in their professional and personal lives. They tend to keep their emotions and behavior highly controlled, and for this reason they appear cold and aloof to others.