Method of producing alkyl substituted 5-amidotetrazoles
申请人:Olin Corporation
公开号:US04921965A1
公开(公告)日:1990-05-01
In a process for the production of Alkyl substituted 5-amidotetrazole compounds represented by the formula: ##STR1## wherein A represents NHX or NRR' X represents a lower alkyl group R represents a lower alkyl group, and R' represents a lower alkyl group. reacts 5-aminotetrazole with an alkyl isocyanate or a dialkyl carbamoyl halide in a polar solvent.
In a process for the production of cellular products comprising thermoplastic or rubber materials the blowing agents employed have the formula: ##STR1## wherein A represents NHX, NRR' or OR X represents H or a lower alkyl group, R represents a lower alkyl group, and R' represents a lower alkyl group. The novel blowing agents provide high gas yields and have high decomposition temperatures while forming only inert nitrogen gas. They are particularly suitable for the production of cellular products from high temperature thermoplastic materials such as polycarbonates.
Substituted 5-amidotetrazoles as blowing agents in the production of
申请人:Olin Corporation
公开号:US04885316A1
公开(公告)日:1989-12-05
In a process for the production of cellular products comprising thermoplastic or rubber materials the blowing agents employed have the formula: ##STR1## wherein A represents NHX, NRR' or OR X represents H or a lower alkyl group, R represents a lower alkyl group, and R' represents a lower alkyl group. The novel blowing agents provide high gas yields and have high decomposition temperatures while forming only inert nitrogen gas. They are particularly suitable for the production of cellular products from high temperature thermoplastic materials such as polycarbonates.