Patent · US Active

Method of producing polymers of spider silk proteins

US8642734B2 · kind B2 · utility

10Cited by

0References

18Claims

0Family size

Assignee

SPIBER TECHNOLOGIES AB · SE

Inventors

Jan Johansson · Stockholm, SE
My Hedhammar · Stockholm, SE
Anna Rising · Uppsala, SE
Kerstin Nordling · Knivsta, SE

Key dates

Filing date	Apr 21, 2010
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Apr 21, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07K14/43518
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A method of producing polymers of an isolated spider silk protein involves providing a solution of said spider silk protein in a liquid medium at pH 6.4 or higher and/or an ion composition that prevents polymerization of the spider silk protein. The properties of the liquid medium are adjusted to a pH of 6.3 or lower and an ion composition that allows polymerization of the spider silk protein. The spider silk protein is allowed to form polymers in the liquid medium, and the resulting spider silk protein polymers are isolated from the liquid medium. The resulting polymers are useful as fibers, films, foams, nets or meshes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.