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US 4,397,965 AGranted
Expandable and curable polyester resin composition and method for making same
AssigneeUniroyal, Inc.
InventorPaul E. Stott
Life of this patent
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Abstract
An expandable and curable polyester composition comprising a mixture of a liquid, ethylenically unsaturated polyester resin composition; a peroxide; an organometallic promotor; and a dialkyl or trialkyl hydrazine is disclosed. In addition, a method for forming said expanded and cured polyester resin composition, and the product formed in accordance with said method, an expanded and cured polyester resin composition, is taught.
Claims18
An expandable and curable polyester composition comprising a mixture of
- a liquid, ethylenically unsaturated polyester resin;
- a peroxide;
- an organo metallic promoter;
- and
- a hydrazine having the structural formula RR.sup.1 NNHR.sup.2
- wherein R and R.sup.1 may be the same or different and are C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, C.sub.3 -C.sub.10 cycloalkyl, C.sub.7 -C.sub.9 aralkyl, or R and R.sup.1 together are C.sub.2 -C.sub.5 alkylene, C.sub.4 -C.sub.5 alkenylene or C.sub.3 -C.sub.4 oxydialkylene;
- R.sup.2 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl, C.sub.5 -C.sub.6 cycloalkyl, or C.sub.7 -C.sub.9 aralkyl.
4 more elements
A method for making an expanded and cured polyester resin composition by preparing a mixture comprising:
- a liquid, ethylenically unsaturated polyester resin;
- a peroxide;
- an organo metallic promoter;
- and
- a hydrazine having the structural formula RR.sup.1 NNHR.sup.2
- wherein R and R.sup.1 may be the same or different and are C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, C.sub.3 -C.sub.10 cycloalkyl, C.sub.7 -C.sub.9 aralkyl, or R and R.sup.1 together are C.sub.2 -C.sub.5 alkylene, C.sub.4 -C.sub.5 are alkenylene or C.sub.3 -C.sub.4 thiodialkylene;
- R.sup.2 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl, C.sub.5 -C.sub.6 cycloalkyl, or C.sub.7 -C.sub.9 aralkyl.
4 more elements
Dependencies are inferred from the claim text.