Method of making ring-opened polynorbornene polymers using pot life extending agents
AssigneeNippon Zeon Co., Ltd.
InventorsMasao Torii, Tomoo Sugawara, Kin-ichi Okumura, Motoyuki Yamato
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Abstract
A reaction solution comprising a mixture of tricyclopentadiene, a norbornene monomer with at least 3 rings in its backbone, a 5-alkenyl-2-norbornene pot life adjusting agent along with a molybdenum type catalyst system gives prolonged pot life without extending time to exotherm (e.g., smoking time). By utilizing this reaction solution it is possible to bulk polymerize reinforced or unreinforced articles in a mold via ring-opening polymerization. Articles so obtained have good outward appearance and excellent physical properties.
Claims45
A method for extending the pot life of a bulk polymerizable reaction solution comprising adding an effective amount of a pot life adjusting agent of the formula:
- ##STR3## wherein R, R.sub.1, and R.sub.2 independently represent hydrogen, C.sub.1 to C.sub.6 alkyl and the monomethyl, monochloro and dichloro substituents thereof, C.sub.2 to C.sub.6 alkenyl and the monomethyl, monochloro and dichloro substituents thereof;
- R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently represent hydrogen, a methyl group or a halogen atom;
- R.sub.9 and R.sub.10 independently represent hydrogen or C.sub.1 to C.sub.6 alkyl;
- n is 0 to 4;
- and "a" represents a single or double bond with the proviso that when "a" is a double bond, R and R.sub.1 are not present;
- to a reactive solution comprising at least one norbornene monomer having 3 or more rings in its backbone, tricylcopentadiene, a molybdenum metathesis catalyst and a cocatalyst.
A method for making a ring-opened polynorbornene molded article comprising:
- feeding a bulk polymerizable reactive solution into a mold, said solution comprising at least one norbornene monomer having 3 or more rings in its backbone, tricyclopentadiene, a pot life extending agent of the formula:
- ##STR4## wherein R, R.sub.1, and R.sub.2 independently represent hydrogen, C.sub.1 to C.sub.6 alkyl and the monomethyl, monochloro and dichloro substituents thereof, C.sub.2 to C.sub.6 alkenyl and the monomethyl, monochloro and dichloro substituents thereof:
- R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, and R.sub.8 independently represent hydrogen, a methyl group or a halogen atom;
- R.sub.9 and R.sub.10 independently represent hydrogen or C.sub.1 to C.sub.6 alkyl;
- n is 0 to 4;
- and "a" represents a single or double bond with the proviso that when "a" is a double bond, R and R.sub.1 are not present, a molybdenum metathesis catalyst and a cocatalyst and;
- polymerizing said reactive solution in said mold producing a solid article.
A reactive feed composition having a prolonged pot life comprising:
- a) at least one norbornene monomer having 3 or more rings in its backbone;
- b) tricyclopentadiene, c) a molybdenum metathesis catalyst and cocatalyst;
- and d) a pot life extending agent of the formula:
- ##STR5## wherein R, R.sub.1, and R.sub.2 independently represent hydrogen, C.sub.1 to C.sub.6 alkyl and the monomethyl, monochloro and dichloro substituents thereof C.sub.2 to C.sub.6 alkenyl and the monomethyl, monochloro and dichloro substituents thereof;
- R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently represent hydrogen, a methyl group or a halogen atom;
- R.sub.9 and R.sub.10 independently represent hydrogen or C.sub.1 to C.sub.6 alkyl;
- n is 0 to 4;
- and "a" represents a single or double bond with the proviso that when "a" is a double bond, R and R.sub.1 are not present.
Dependencies are inferred from the claim text.