Two-component chemical fastening systems

Details Two-component chemical fastening systems Two-component chemical fastening systems

2007-01-23

2007-01-23

Wu, David W. (Department: 1713)

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

C525S027000, C525S263000

Reexamination Certificate

active

10451103

ABSTRACT:
The invention relates to two-component chemical fastening systems, the A-component containing an unsaturated polyester and a reactive diluent, and the B-component containing a peroxide and an extender, wherein the extender is either a monomeric component according to formula 1in-line-formulae description="In-line Formulae" end="lead"?(A—CH═CH—O)n—R   (formula 1)in-line-formulae description="In-line Formulae" end="tail"?or a resinous compound comprising, in a covalently built-in manner, a component having vinyl ether group(s), and the content of the peroxide in the B-component is from 0.5 to 99 wt. %. In the formula A, R and n are specified as hydrogen or C1-3alkyl; C1-20(hetero)-aliphatic with hydroxyl or amino groups, or poly(C2 or 3)glycol with 2–120 glycol units; and 1 to 4, respectively.The resinous compounds with built-in vinyl ether group(s) (0.5 to 50 wt. %, calculated as indicated) are obtained by reaction of a mixture of appropriate amounts of:a) a first compound (HVE) containing at least one hydroxyl group and at least one vinyl ether group, andb) a second compound (D/HIC), being an isocyanate; andc) a third compound (G/P/HP) from (1) C2-6glycols, (2) C5-20polyols having 2–5 hydroxyl groups and (3) hydroxyl terminated polyester compounds, not being alkyd resins, having 1–5 free hydroxyl groups and 2–50 monomeric units, or mixtures thereof.The invention also relates to methods for preparing (the B-component) of such two-component chemical fastening systems, as well as to use of the systems for chemical fastening.

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