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Main.POLYMERS.Oligomer.Olefin Oligomer.Catalyst.Molecular Sieve. Zeolite..Patent.Claims.Claim 1: Core. Surface Layer (SL)..Core & SL: Zeolite Contg Si & Al..Same Crystalline Structure..(Si: Al)SL>(Si:Al)Core. Claim 2:.(Si: Al)SL=300-1500:1. Claim 3:.Molecular Sieve CI.degree>10..Claim 4: Olefin Oligomerization.Catalyst: Molecular Sieve (Cl. 1)..Claims 5,6: (Si:Al)Core>120:1 &.=60-100:1 resp. Claims 7,8(Si:Al)SL.>150:1& =300-1500:1 resp. Claim 11:.Molecular Sieve: ZSM-22. Claims.13,14: 2-12C & 2-6C Olefin resp..Claim 15: Temp.=160-300C. Claim 16:.Reduced Branching Oligomer..Claim 17: Molecular Sieve (MS) Mfg..Process: Heat Aq. Mixt. Comprising.Sources of Si,Al,MonoValent InOrg..Cation; Mixt Dispersed Therein.Crystals of MS Contg Si & Al;.(Si:Al)Crystal<(Si:Al)Source to.cause Crystallization MS Layer from.Mixt. onto Surfaces of Crystal..Claim 18: Aqueous Synthesis Mixt.:.Organic Structure Directing Agent..Patent Assignee |