Polyurethane polymer

Details Polyurethane polymer Polyurethane polymer

2006-01-31

2006-01-31

Buttner, David J. (Department: 1712)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S123000, C526S222000, C526S224000, C528S075000

Reexamination Certificate

active

06992138

ABSTRACT:
Provided is a polyurethane polymer which is excellent in oil resistance, weatherability, light resistance, heat resistance, hot water resistance, hydrolysis resistance, strength, chlorine resistance, and chemical resistance, and which can be produced simply and economically. The polyurethane polymer is produced by polymerizing at least two components: a vinyl polymer (A) having a mercapto group at each end of the molecular chain produced by a reversible addition-fragmentation chain transfer polymerization method, and an organic polyisocyanate (B). Also provided are polyurethane-based materials containing the polyurethane polymer, and polyurethane elastic fiber.

REFERENCES:
patent: 4152309 (1979-05-01), Ijichi et al.
patent: 5319024 (1994-06-01), Ishidoya et al.
patent: 5990245 (1999-11-01), Esselborn et al.
patent: 4-227763 (1992-08-01), None
patent: 11-322884 (1999-11-01), None
patent: WO 98/01478 (1998-01-01), None

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