Polyester urethanes

Details Polyester urethanes Polyester urethanes

2005-02-08

2005-02-08

Sergent, Rabon (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C514S772700, C514S785000, C521S079000, C521S172000, C525S123000, C525S440030, C525S454000, C528S076000

Reexamination Certificate

active

06852825

ABSTRACT:
The present invention relates to polyester urethanes comprising polypentadecalactone segments. These polyester urethanes do show good properties which may be adjusted in a controlled manner. In preferred embodiments the polyester urethanes display additionally polycaprolactone segments. Such polymer may show shape memory effects.

REFERENCES:
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patent: 4035548 (1977-07-01), Chang et al.
patent: 4085092 (1978-04-01), Chang et al.
patent: 6160084 (2000-12-01), Langer et al.
patent: WO 9942147 (1999-08-01), None
patent: WO 9942528 (1999-08-01), None
patent: WO 0191822 (2001-12-01), None
Byung K. K. et al., “Polyurethanes having shape memory effects,” Polymer, Elsevier Science Publishers B.V. GB, Bd. 37, Nr. 26, 1996, Seiten, pp. 5781-5793, XP004070893.

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