High solubility size composition for fibers
CA 2252602 A1 · Owner: N.V. Owens-Corning S.A. · Inventors: Piret, Willy Henri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high solubility size composition is provided which may be applied to glass fibers useful for reinforcing polymeric materials. The size composition includes: a first film former comprising a polyester-based thermoplastic polyurethane derived from a saturated, non-crosslinkable polyester; a second film former comprising at least one ingredient selected from (i) a vinyl acetate glycidyl methacrylate copolymer and (ii) a mixture of a vinyl acetate glycidyl methacrylate copolymer and a vinyl acetate homopolymer; a silane coupling agent; and water. Using glass fibers coated with the high solubility size composition allows the advantageous production of low-pigmented or nonpigmented …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.