Liquid solventless synthetic-rubber-based composition
AssigneesPolymate, Ltd., Nanotech Industries, Inc.
InventorOleg Figovsky
Life of this patent
Estimating the term…
Abstract
A synthetic-rubber-based composition that consists of a low-molecular-weight rubber selected from polybutadiene comprising about 75% to about 92% cis-1,4 units, sulfur, a vulcanization accelerator, and an active filler wherein the sulfur, accelerator, and active filler are each present in the form of powder having a particular particle-size range. Additionally, this composition may be used to form coatings and rubber concretes.
Claims38
A liquid solventless synthetic-rubber-based composition comprising:
- (a) a low number-average molecular weight non-functional polybutadiene rubber comprising about 75% to about 92% cis-1,4 units;
- (b) epoxy-terminated low number-average molecular weight rubber comprising butadiene-acrylonitrile copolymer with not less than 3 epoxy terminal groups per molecule, said epoxy-terminated low number-average molecular weight rubber being present in the amount of about 2.0 parts to about 4.5 parts by weight for 100 parts by weight of low number-average molecular weight rubber;
- (c) sulfur;
- (d) a vulcanization accelerator;
- and
- (e) an active filler, wherein the sulfur, accelerator, and active filler are each present in the form of powder having a particle size of about 5 μm to about 85 μm.
A liquid solventless synthetic-rubber-based composition comprising:
- (a) a low number-average molecular weight non-functional polybutadiene rubber comprising about 75% to about 92% cis-1,4 units,
- (b) epoxy-terminated low number-average molecular weight rubber comprising butadiene-acrylonitrile copolymer with not less than 3 epoxy terminal groups per molecule, said epoxy-terminated low number-average molecular weight rubber being present in the amount of about 2.0 parts to about 4.5 parts by weight based on 100 parts of low number-average molecular weight rubber,
- (c) sulfur,
- (d) a vulcanization accelerator, and
- (e) an active filler wherein the sulfur, accelerator, and active filler are each present in the form of powder having a particle size of about 5 μm to about 85 μm and wherein the composition is vulcanized at a vulcanization temperature of about or greater than 80° C.
A liquid solventless synthetic-rubber-based composition, which is a liquid rubber concrete composition, comprising:
- (a) a low number-average molecular weight non-functional polybutadiene rubber comprising about 75% to about 92% cis-1,4 units,
- (b) epoxy-terminated low number-average molecular weight rubber comprising butadiene-acrylonitrile copolymer with not less than 3 epoxy terminal groups per molecule, said epoxy-terminated low number-average molecular weight rubber being present in the amount of about 2.0 parts to about 4.5 parts by weight based on 100 parts of low number-average molecular weight rubber,
- (c) sulfur,
- (d) a vulcanization accelerator,
- (e) an active filler, and
- (f) a fine aggregate wherein the sulfur and the accelerator are each present in the form of powder having a particle size of about 5 μm to about 85 μm and wherein the active filler is present in the form of powder and essentially consists of at least one first active filler with a particle size of about 5 μm to 85 μm and at least one second active filler with a particle size of greater than 85 μm to about 120 μm.
Dependencies are inferred from the claim text.