Abstract: The present invention relates to a biodegradable, environmentally friendly cleaning solvent composition comprising: (a) about 20 weight percent to about 99.9 weight percent of isoamyl lactate; (b) about 0.1 weight percent to about 60 weight percent of a C1-C5 ester of a C16-C22 fatty acid; (c) 0 to about 20 weight percent of a surfactant; (d) 0 to about 20 weight percent of a thickener; and (e) 0 to about 50 weight percent organic solvent. The subject invention further relates to a household cleaning solvent that is comprised of isoamyl lactate and a small amount of a fragrance. The subject invention further relates to a solvent composition comprising: (a) about 10 to about 99.9 weight percent of isoamyl lactate; (b) 0 to about 60 weight percent of a C1-C5 ester of a C16-C22 fatty acid; (c) 0 to about 20 weight percent of a surfactant; (d) 0 to about 20 weight percent of a thickener; and (e) 0.1 to about 90 weight percent organic solvent.

Abstract: This invention is based upon the unexpected discovery that ethyl lactate can be used as an emulsifying/dispersing excipient for numerous biologically active compounds without destroying the pharmacological activity of the active ingredient. Ethyl lactate proves to be an extremely effective agent for solubilizing biologically active compounds that are difficult to solubilize in conventional excipients. The operability of this invention is predicated on the necessity for the ethyl lactate to be essentially free of peroxide compounds. Such pharmaceutical grade ethyl lactate can be made by reducing the level of peroxide compounds in high purity ethyl lactate by hydrogenation, reduction with a non-catalytic chemical reducing agent, absorption into activated carbon or alumina, or distillation.

Abstract: Gasketing paper is commonly made by the beater addition process. In the beater addition process a furnish composition is prepared by mixing latex into a fiber slurry which also typically contains one or more fillers. The beater addition process is currently being scrutinized because of environmental concerns. More specifically, conventional lattices used in the beater addition process contain curatives, such as amines, sulfur, and zinc compounds, which are discharged into the environment via the affluent from the process. By practicing the process of this invention gasketing paper can be manufactured by an environmentally sound technique. In one embodiment of this invention gasketing paper is made by beater addition with the latex utilized in the process being comprised of (a) at least one rubber having both pendant blocked isocyanate groups and groups containing at least one active Zerewitinoff hydrogen, (b) at least one emulsifier, and (c) water.

Abstract: The present invention relates to a sulfur vulcanized rubber composition containing 0.1 to 10.0 phr of an oligomeric maleimide of the formula: ##STR1## or a maleamic acid of the formula: ##STR2## wherein R and R.sup.1 are individually selected from the group of radicals consisting of hydrogen, an alkyl having 1 to 4 carbon atoms or a halogen; R.sup.2 is selected from the group of radicals consisting of 1 to 12 carbon atoms; X has a value of from 1 to 146 and n has a value of from 0 to 4.The presence of the maleimide oligomer or maleamic acid improve cord adhesion to the sulfur vulcanized rubber compound.

Abstract: The present invention relates to a sulfur vulcanized rubber composition containing 0.1 to 10.0 phr of an oligomeric maleimide of the formula: ##STR1## or a maleamic acid of the formula: ##STR2## wherein R and R.sup.1 are individually selected from the group of radicals consisting of hydrogen, an alkyl having 1 to 4 carbon atoms or a halogen; R.sup.2 is selected from the group of radicals consisting of 1 to 12 carbon atoms; X has a value of from 1 to 146 and n has a value of from 0 to 4.The presence of the maleimide oligomer or maleamic acid improve cord adhesion to the sulfur vulcanized rubber compound.

Abstract: The present invention relates to a sulfur vulcanized rubber composition containing a silica filler and a bismaleimide of the formula: ##STR1## wherein R and R.sup.1 are individually selected from the group of radicals consisting of hydrogen, an alkyl having 1 to 4 carbon atoms or a halogen; R.sup.2 is selected from the group of radicals consisting of 1 to 12 carbon atoms; and n has a value of from 0 to 4.The bismaleimide functions as a coupling agent in the silica filled sulfur vulcanized rubber compound.

Abstract: Gasketing paper is commonly made by the beater addition process. In the beater addition process a furnish composition is prepared by mixing latex into a fiber slurry which also typically contains one or more fillers. The beater addition process is currently being scrutinized because of environmental concerns. More specifically, conventional latices used in the beater addition process contain curatives, such as amines, sulfur, and zinc compounds, which are discharged into the environment via the affluent from the process. By practicing the process of this invention gasketing paper can be manufactured by an environmentally sound technique. In one embodiment of this invention gasketing paper is made by beater addition with the latex utilized in the process being comprised of (a) at least one rubber having both pendant blocked isocyanate groups and groups containing at least one active Zerewitinoff hydrogen, (b) at least one emulsifier, and (c) water.

Abstract: This invention is concerned with the prevention of gel formation in polymers. More specifically, this invention is directed to a unique combination of materials that greatly lessens the formation of gel in elastomers during processing and storage. The combination comprises a hindered phenolic antioxidant and an alkylated phenol/primary mercaptan/formaldehyde reaction product.

Abstract: This invention is concerned with compounds of the structural formula: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different radical selected from the group consisting of hydrogen and methyl radicals; when R.sup.1 is a hydrogen radical, R is an alkyl radical of 5 to 11 carbon atoms; when R.sup.1 is a methyl radical, R is a radical of 4 to 10 carbon atoms; when R.sup.2 is a hydrogen radical, R.sup.3 is an alkyl radical of 5 to 11 carbon atoms; when R.sup.2 is a methyl radical, R.sup.3 is an alkyl radical of 4 to 10 carbon atoms. These compounds have utility as synergists for phenolic type and amine type antioxidants in the stabilization of natural and synthetic rubbers.

Abstract: Synthetic resin composition and mixtures thereof in rubber-based compositions and paint-type resin compositions. Said synthetic resin composition is prepared by polymerizing monomer mixture of (A) selected methyl branched .alpha.-olefin having its tertiary carbon atom removed from the carbon-to-carbon double bond and (B) at least one aromatic monomer selected from styrene and .alpha.-methyl styrene.

Abstract: A resinous composition derived by reacting (A) an amine selected from primary amines and primary diamines with (B) a maleic anhydride-modified piperylene/methyl branched monoolefin backboned resin. Such compositions can be modified by co-reacting with an amino acid or lactam thereof. Said composition can be useful as a tackifier for rubber and thermoplastic products.