Nonaqueous sizing system for glass fibers and injection moldable polymers
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorsLeonard Joseph Adzima, David Lee Shipp, Andrew Bencich Woodside, David George Miller, Catherine Ashley Barron
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Abstract
A nonaqueous sizing for glass fibers useful for reinforcement of polymers. The sizing composition comprises one or more film formers miscible with the polymer to be reinforced and one or more coupling agents. The sizing composition of the invention provides a glass fiber which may be wirecoated with the polymer to be reinforced, eliminating the need for extrusion or pultrusion processing to make glass/polymer composite fibers, compound or pellets.
Claims18
A nonaqueous sizing for application to glass reinforcing fibers comprising:
- a) one or more film formers that are miscible with the polymer to be reinforced, the film former having a melting point in the range of from 30-60.degree. C., and a viscosity of from 75-400 cPs;
- and
- b) from about 0.1 to 5% by weight of one or more coupling agents selected from the group consisting of silanes;
- wherein the sizing has a loss on ignition rate of from 2-10% when it is applied to glass reinforcing fibers.
A nonaqueous sizing for application to glass fibers for reinforcing polyamide comprising:
- a) one or more film formers that are miscible with the polymer to be reinforced, the film former having a melting point in the range of from 30-60.degree. C., and a viscosity of from 75-400 cPs;
- and
- b) one or more coupling agents selected from the group consisting of silanes;
- wherein the sizing has a loss on ignition rate of from 2-10% when it is applied to glass fibers for reinforcing polyamide.
A nonaqueous sizing composition for application to glass fibers for reinforcing polypropylene comprising:
- a) one or more film formers that are miscible with the polymer to be reinforced, the film former having a melting point in the range of from 30-60.degree. C., and a viscosity of from 75-400 cPs;
- and
- b) one or more coupling agents selected from the group consisting of silanes;
- wherein the sizing has a loss on ignition rate of from 2-10% when it is applied to glass fibers for reinforcing polypropylene.
A nonaqueous sizing composition for application to glass reinforcing fibers comprising:
- a) one or more polycaprolactones as film formers;
- and
- b) an amine silane coupling agent.
Glass fibers having at least a portion of their surfaces covered with the dried residue of a nonaqueous sizing composition comprising:
- a) one or more polycaprolactones as film formers;
- and
- b) an amine silane coupling agent.
Dependencies are inferred from the claim text.