Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1990-08-09
1991-05-28
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 526166, C08F 478
Patent
active
050195441
ABSTRACT:
This invention is a process for preparing a polymer which comprises contacting pure dicyclopentadiene with a pure tungsten catalyst complex, such as WCl.sub.3 (2,6-diisopropylphenoxy).sub.3, when tributyl tin hydride or triphenyl tin hydride is used as the activator for the polymerization. This process affords a method of polymerization of dicyclopentadiene in which the mixture gels slowly without the use of a rate moderator at 80.degree. C. (in from about 15 seconds to as much as two minutes or more) and furthermore cures quite slowly (in about 3-6 minutes). This delay makes these compositions particularly applicable to reaction injection molding processes. Moreover, both the tungsten complexes and the tin activator compounds employed in this invention are relatively insensitive to oxygen and water.
REFERENCES:
patent: 4729976 (1988-03-01), Sjardijn et al.
Garvin Patrick P.
Goldberg Mark
Hercules Incorporated
LandOfFree
Discrete tungsten complexes as oxygen and water resistant DCPD p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Discrete tungsten complexes as oxygen and water resistant DCPD p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete tungsten complexes as oxygen and water resistant DCPD p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-36011