| 摘要 |
<p>The present invention relates to a linear block polymer which is particularly suitable for use as an implant in humans or animals, for example as ligaments. The block polymer comprises urea and urethane groups and has a molecular weight of at least 104 Dalton, preferably at least 105 Dalton and it also includes primary NH¿2? and/or OH end groups. Besides the use of the block polymer as an implant in a biological environment, the invention also includes a method for the production thereof, which method is characterized in that a prepolymer having two isocyanate end groups per molecule is chain extended with an aliphatic or aromatic diamine with a mol ratio NH2/NCO of 0.95 to 1.05.</p> |
