The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1986
Filed:
Mar. 01, 1984
Applicant:
Inventor:
Werner Hartmann, Konstanz, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264143 ; 2643286 ; 26432817 ; 26433119 ; 524265 ;
Abstract
A polylaurolactam mold is being produced by that a laurolactam melting at first is being mixed with a catalyst and the mixture afterwards being compounded with an activator and polymerized, whereby the polymerizing material is being cast to threads or cords and the reduced material is being injection molded at temperatures of 430.degree. F. to 490.degree. F. and at pressures of 50.10.sup.5 to 100.10.sup.5 Pa, whereby, according to the invention, before the molding 0.1 to 5 wt. % silicon fat is added to the granules. The then resulting molded products, especially protective helmets and protective plates, are distinguished by superior physical properties.