Abstract Modified L-lysine polymers are provided consisting essentially of recurring units of the formula: and recurring units of the formula: the total number of recurring units of formula (I) being n and the total number of recurring units of formula (II) being m such that n + m is greater than 50 with the proviso that m can be zero, in which each R radical which may be the same or different, represents one of the following groups: -NH-SO3H: -NH-(CH2)p-SO3H in which p is 1 to 4 ; -NH-(CH2)2-COOH; -NH-CO-CH2-CH2OH; -NH-CO(CH2)2-SO3H; -NH-CO-NH2; -OH and - N(CH3)2. These polymers have better physiological properties than mixtures of L-lysine polymers with other poly( Alpha -amino acids) and than copolymers of L-lysine and other Alpha -amino acids.
A MODIFIED L-LYSINE HOMOPOLYMER CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE FORMULA:
Claim 2
Dependent Claim
12 words
A MODIFIED L-LYSINE HOMOPOLYMER CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE FORMULA:
Claim 3
Dependent Claim
44 words
A process for prepaRing a modified L-lysine homopolymer as defined in claim 1 which comprises reacting an L-lysine homopolymer having more than 50 recurring units with a reagent capable of reacting with an epsilon -NH2 group of lysine to convert it into an -NH-SO3H.
Claim 4
Dependent Claim
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A modified L-lysine homopolymer according to claim 1 in which n + m is greater than 2,000.
Claim 5
Dependent Claim
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A modified L-lysine homopolymer according to claim 1 which has been cross-linked via the epsilon -position.
Claim 6
Dependent Claim
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An article or coating of a modified L-lysine homopolymer as defined in claim 1.