Expandable mixtures that are devoid of isocyanates

Details Expandable mixtures that are devoid of isocyanates Expandable mixtures that are devoid of isocyanates

2004-03-04

2009-06-23

Zemel, Irina S (Department: 1796)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S155000, C521S159000, C521S170000, C106S287110, C106S287130

Reexamination Certificate

active

07550517

ABSTRACT:
Foamable mixtures of excellent quality and which are isocyanate free are prepared from silane-terminated prepolymers in which a proportion of the silane end groups are replaced by non-polar organic groups. As a result, the prepolymers have much greater hydrocarbon blowing agent compatibility.

REFERENCES:
patent: 5880167 (1999-03-01), Krebs et al.
patent: 6020389 (2000-02-01), Hoheneder
patent: 2004/0072921 (2004-04-01), Stanjek et al.
patent: 43 03 848 (1994-08-01), None
patent: 0 931 800 (1999-07-01), None
patent: WO 96/06124 (1996-02-01), None
patent: WO 00/04069 (2000-01-01), None
patent: WO 02/066532 (2002-08-01), None
patent: WO 02/068491 (2002-09-01), None
Derwent Abstract corres. to WO 02068491 [AN2002-056633].
Derwent Abstract corres. to WO 0004069 [AN2000-225102].
Derwent Abstract corres. to DE 4303848 [AN 1994-250202].

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