Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1987-11-27
1988-09-27
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 95, 521145, 521180, 521182, 521184, 521189, C08J 910
Patent
active
047742666
ABSTRACT:
A process for the production of cellular products which comprises incorporating a blowing agent into rubber or a thermoplastic material uses as the blowing agent a tetrazole compound represented by the formula: ##STR1## in which R represents an alkyl, cycloalkyl, hydroxyalkyl, polyhydroxyalkyl, aryl, alkylaryl, aralkylene, alkenyl, alkenylaryl or alkenylaralkylene group.
The novel blowing agents of the present invention include compounds which are liquids which may be directly incorporated into the molten rubber or thermoplastic material. The blowing agents of this invention are especially useful, as indicated, with polymers and copolymers that have high processing temperatures as they minimize polymer degradation and provide products with increased impact strengths.
REFERENCES:
patent: 3528897 (1970-09-01), Scheiner
patent: 3873477 (1975-03-01), Beck
patent: 4142029 (1979-02-01), Illy
patent: 4158724 (1979-06-01), Illy et al.
patent: 4258138 (1981-03-01), Britton
patent: 4616042 (1986-10-01), Avakian
Braun, J. V., et al, Ber. 74B, pp. 264-272, (1941), "Synthesis in the Tetrazole Series, II, Julius v. Braun and Walter Rudolph.
Busilova, S. R., et al, Khim. Geterotsikl. Soedin, 1983 (1), pp. 119-121, "Reaction of 5-Phenyltetrazole and Alpha-Epoxides", (English Translation).
Casey, M., et al, J. Chem. Soc., Chem. Commun. No. 13, pp. 714-715, Jul. 1, 1982, "A New Synthesis of Imidazoles".
Henry, R. A., J. Heterocyclic Chem., No. 13, pp. 391-392, (1976), "t-Butylation of 5-Substituted Tetrazoles".
Mihina, J., et al, J. Org. Chem., No. 15, pp. 1082-1092, (1950), "The Reaction of Nitriles with Hydrazoic Acid: Synthesis of Monosubstituted Tetrazoles".
Pawda, A., et al, J. Org. Chem., 43(9), pp. 1664-1671, (1978), "Intramolecular 1,3-Dipolar Cycloaddition Reactions of Alkenyl-Substituted Nitrile Imines".
Spear, R. J., Aust. J. Chem., 37 (12), pp. 2453-2468, (1984); Chem. Absts. 102, 185012w (1985), "Positional Selectivity of the Methylation of 5-Substituted Tetrazole Anions".
Boudakian Max M.
Chandalia Kiran B.
Harscher Mary G.
Rothgery Eugene F.
Foelak Morton
Haglind James B.
Olin Corporation
LandOfFree
N-substituted 5-phenyltetrazoles as high temperature blowing age does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with N-substituted 5-phenyltetrazoles as high temperature blowing age, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and N-substituted 5-phenyltetrazoles as high temperature blowing age will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2398238