Process for producing solid or microcellular polyurethane elasto

Details Process for producing solid or microcellular polyurethane elasto Process for producing solid or microcellular polyurethane elasto

1978-06-29

1980-12-16

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521160, 521161, 528 58, 528 73, C08G 1814, C08G 1824, C08G 1879

Patent

active

042398576

ABSTRACT:
This invention relates to a process for producing solid and microcellular polyether polyurethane elastomers by rapid processing technology wherein the resulting elastomers have improved "green strength" (cracking resistance). In the process, dialkyltin dimercaptide carboxylic acid ester is employed as the sole urethane catalyst in higher-than-normal amounts. The process is particularly suitable for use in the rapid processing technology known as Reaction Injection Molding (RIM).

REFERENCES:
patent: 2834748 (1958-05-01), Bailey et al.
patent: 2917480 (1959-12-01), Bailey et al.
patent: 3505377 (1970-04-01), Morehouse
patent: 3883571 (1975-05-01), Allport et al.
patent: 3905925 (1975-09-01), Vervloet
patent: 3907780 (1975-09-01), Hughes
patent: 3945981 (1976-03-01), Robertson
patent: 3975317 (1976-08-01), Russo
patent: 4067831 (1978-01-01), Wasilczyk
patent: 4101471 (1978-07-01), Russo
Plastics Engineering, Mar. 1977, pp. 39-42.
Plattics Technology, Jul. 1976, pp. 67-70.
Plastics Technology, Jul. 1977, pp. 117-120.
Rubber Age, vol. 7, 1975, pp. 46-48.

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