Abstract:
Salts of 3-hydroxy-2-hydroxymethyl-propane sulfonic acid-1 and a process for the preparation thereof by reaction of 2-methylenepropane-1,3-diol with a bisulfite under special conditions, the use of these salts as co-condensable substances as monomers for polyurethanes and as valuable intermediate products for other organic syntheses are disclosed.
Abstract:
2-METHYLENE PROPANE PHOSPHONIC ACID ESTERS AND THEIR COPOLYMERS WITH ACRYLONITRILE ARE THE OBJECTS OF THE INVENTION. The fibres produced from the copolymers are flame-resistant and show increased thermal stability, improved affinity for dyes and fastness to light. The copolymers of acrylonitrile and 2methylene propane phosphonic acid esters - in addition to other comonomers - are produced by polymerizing the monomers in solution or - preferably - in an aqueous suspension or emulsion. Formed articles, such as fibres from said copolymers can be prepared by spinning a solution of the copolymer in an organic solvent p.i. in dimethyl formamide.
Abstract:
Acid-modified terephthalic acid polyesters containing structural elements of 2-sulfonatomethyl-propanediol-(1,3). The polyesters are easily dyeable with basic dyestuffs and can be spun from the melt into filaments.