Polymer welding process and composition
AssigneePhillips Petroleum Company
InventorHarold D. Boultinghouse
Life of this patent
Estimating the term…
Abstract
A resinous block copolymer, such as butadiene/styrene block copolymer, having an antiblocking agent incorporated therein, such as a microcrystalline wax, is bonded or welded together with a composition containing at least one hydroxyl-ether and/or keto-ether such as 4-methoxy-4-methyl-2-pentanone.
Claims22
A composition for welding polymers comprising a welding solvent selected from the group consisting of hydroxyl-ethers and keto-ethers and a sufficient amount of a resinous conjugated diene/monovinyl-substituted aromatic block copolymer containing an antiblocking agent, to raise viscosity and lower after welding drying time of said solvent.
A composition for welding polymers comprising a welding solvent and a sufficient amount of a resinous block copolymer containing an antiblocking agent, to raise viscosity and lower after welding drying time, wherein said welding solvent is selected from the group consisting of hydroxyl-ethers and keto-ethers of the formula:
- R.sub.2 C(OR')CR.sub.2 CROHCR.sub.3
- and
- R.sub.2 C(OR')CR.sub.2 COCR.sub.3
- respectively, wherein R is hydrogen or an alkyl group having 1-5 carbon atoms wherein each R can be the same or different and wherein R' is an alkyl group having 1-5 carbon atoms, and said block copolymer is a resinous conjugated diene/monovinyl-substituted aromatic block copolymer containing microcrystalline wax antiblock agent.
A composition for welding polymers comprising a welding solvent selected from the group consisting of hydroxyl-ethers and keto-ethers, and having dissolved therein about 0.5 to about 10 weight percent, based on the weight of said composition, of a resinous conjugated diene/monovinyl-substituted aromatic compound block copolymer.
A composition for welding polymers consisting essentially of a welding solvent selected from the group consisting of hydroxyl-ethers and keto-ethers, and having dissolved therein about 0.5 to about 10 weight percent, based on the weight of said composition, of a resinous conjugated diene/monovinyl-substituted aromatic block copolymer.
Dependencies are inferred from the claim text.