Organophosphorus compounds having polysulfide bridge
AssigneesCentre National De La Recherche Scientifique, Universite Montpellier II Sciences et Techniques du Languedoc
InventorHubert Mutin
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Abstract
The invention relates to organophosphorus compounds comprising a polysulfide bridge, to their process of preparation and to their use as coupling agent between an inorganic or metal filler and an elastomer. The compounds correspond to the formula (I) (RO)2−tR1tP(O)—Ox—(CH2)y—Sz—(CH2)y—Ox—P(O) (OR)2−tR1t in which R represents a hydrogen , an alkyl, an aryl, a trialkylsilyl, a trialkylamino or an alkali metal; R1 represents an alkyl or an aryl; x is 0 or 1; y is an integer from 1 to 22, preferably from 2 to 4; z is equal or larger than 3, t is 0 or 1.
Claims24
A compound corresponding to the formula:
- (RO)2−tR1tP(O)—Ox—(CH2)y—Sz—(CH2)y—Ox—P(O)(OR)2−t R1t (I)
- in which:
- R represents a hydrogen, an alkyl, an aryl, a trialkylsilyl, a trialkylamino or an alkali metal;
- R1 represents an alkyl or an aryl;
- x is 0 or 1;
- y is an integer from 1 to 22;
- z≧3;
- t is 0 or 1.
Dependencies are inferred from the claim text.